T. Shimizu, R. Miura, M. Fukamachi, Y. Yokoshiki, T. Tokuda, T. Shibahara, D. Kawaura and H. Kudo, Appl. Phys. Express Vol.16(5), 056501 (2023).[DOI:10.35848/1882-0786/accfe3]
2022
Yasufumi Yokoshiki, Keito Nagayoshi, Hidefumi Mitsuno, Sawako Niki, Ryohei Kanzaki, Takashi Tokuda, and Takamichi Nakamoto, "Improving Performance of Odor Biosensor System Using Olfactory Receptor," Sensors and Materials Vol. 34(4), pp. 1617-1626 (2022).[DOI:10.18494/SAM3765]
T. M. Takahashi, A. Hirano, T. Kanda, V. M. Saito, H. Ashitomi, K. Z. Tanaka, Y. Yokoshiki, K. Masuda, M. Yanagisawa, K. E. Vogt, T. Tokuda and T. Sakurai, Cell Reports Methods Vol. 2(11), 100336 (2022).[DOI:10.1016/j.crmeth.2022.100336]
2021
Yasumi Ohta, Mark Christian Guinto; Takashi Tokuda; Mamiko Kawahara, Makito Haruta, Hironari Takehara, Hiroyuki Tashiro, Kiyotaka Sasagawa, Hirotaka Onoe, Reona Yamaguchi, Yoshinori Koshimizu, Kaoru Isa, Tadashi Isa, Kenta Kobayashi, Yasemin M. Akay, Metin Akey, and Jun Ohta, "Micro-LED Array-Based Photo-Stimulation Devices for Optogenetics in Rat and Macaque Monkey Brains," in IEEE Access vol. 9, pp. 127937-127949 (2021) [DOI:10.1109/ACCESS.2021.3111666]
Nattakarn Wuthibenjaphonchai, Makito Haruta, Kiyotaka Sasagawa, Takashi Tokuda, Sandro Carrara, Jun Ohta, "Wearable and Battery-free Health-monitoring Devices with Optical Power Transfer," IEEE Sensors Journal Vol. 21(7), pp. 9402-9412 (2021). [DOI:10.1109/JSEN.2021.3050139]
Y. Mori, C. Chia‐Chi, H. Endo, M. Hata, K. Shodo, Y. Terasawa, T. Noda, T. Tokuda, M. Haruta, H. Tashiro, K. Sasagawa and J. Ohta, J. Eng. 2021 (10), 546 (2021).[DOI:10.1049/tje2.12058]
2020
Yasuko Hagihara, Ayaka Sakamoto, Takashi Tokuda, Tomoki Yamashita, Sena Ikemoto, Ayaka Kimura, Makito Haruta, Kiyotaka Sasagawa, Jun Ohta, Kazuo Takayama, and Hiroyuki Mizuguchi, "Photoactivatable oncolytic adenovirus for optogenetic cancer therapy," Cell Death & Disease Vol. 11, article number 570 (2020) [DOI:10.1038/s41419-020-02782-6].
Po-Han Kuo, Oi-Ying Wong, Chi-Kuan Tzeng, Pu-Wei Wu, Chuan-Chin Chiao, Po-Hung Chen, Po-Chun Chen, Yueh-Chun Tsai, Fang-Liang Chu, Jun Ohta, Takashi Tokuda, Toshihiko Noda, Chung-Yu Wu, "Improved Charge Pump Design and Ex Vivo Experimental Validation of CMOS 256-Pixel Photovoltaic-Powered Subretinal Prosthetic Chip," IEEE Transactions on Biomedical Engineering 67(5), pp. 1490-1504, May 2020. [DOI:10.1109/TBME.2019.2938807]
Erus Rustami, Kiyotaka Sasagawa, Kenji Sugie, Yasumi Ohta, Makito Haruta, Toshihiko Noda, Takashi Tokuda, Jun Ohta, "Needle-Type Imager Sensor With Band-Pass Composite Emission Filter and Parallel Fiber-Coupled Laser Excitation," IEEE Transactions on Circuit and Systems 67(4), pp. 1082-1091 (Feb 2020). [DOI:10.1109/TCSI.2019.2959592]
2019
Wan Shen Hee, Kiyotaka Sasagawa, Aiki Kameyama, Ayaka Kimura, Makito Haruta, Takashi Tokuda, and Jun Ohta, "Lens-free Dual-Color Fluorescent CMOS Image Sensor for Forster Resonance Energy Transfer Imaging," Sensors and Materials 31(8) pp.2579-2594 (2019/8/30). [DOI:10.18494/SAM.2019.2358]
K. Sugie, K. Sasagawa, M.C. Guinto, M. Haruta, T. Tokuda, J. Ohta, "Implantable CMOS image sensor with incident-angle-selective pixels," Electronics Letters, vol.55, no.13, pp.729-731 (2019.6.27). [DOI:10.1049/el.2019.1031]
T. Tokuda*, T. Ishizu, N. Wuthibenjaphonchai M. Haruta, T. Noda, K. Sasagawa, M. Sawan, and . Ohta, “Design Optimization of CMOS Control Circuit for Integrated Photovoltaic Power Transfer,” Sensors and Materials 30, pp. 2343-2357 (2018). [DOI:10.18494/SAM.2018.1945]
Hironari Takehara, Y. Nakamoto, N. Ikeda, K. Sasagawa, M. Haruta, T. Noda, T. Tokuda, and J. Ohta, “Compact Lensless Fluorescence Counting System for Single Molecular Assay,” IEEE Transactions on Biomedical Circuits and Systems 12, pp. 1177-1185 (2018). [DOI:10.1109/TBCAS.2018.2820151]
T. Noda*, Y. Nakano, Y. Terasawa, M. Haruta, K. Sasagawa, T. Tokuda, and J. Ohta, "Performance improvement and in vivo demonstration f a sophisticated retinal stimulator using smart electrodes with uilt-in CMOS microchips," Jpn. J. Appl. Phys. 57, 1002B3 (2018). [DOI:10.7567/JJAP.57.1002B3]
K. Sasagawa, A. Kimura, M. Haruta, T. Noda, T. Tokuda, and J. Ohta, “Highly sensitive lens-free fluorescence imaging device enabled by a complementary combination of interference and absorption filters,” Biomedical Optics Express 9, pp.4329-4344 (2018). [DOI:10.1364/BOE.9.004329]
T. Tokuda, T. Ishizu1, W. Nattakarn, M. Haruta, T. Noda1, K. Sasagawa1, M. Sawan, and J. Ohta, "1 mm3-sized Optical Neural Stimulator based on CMOS Integrated Photovoltaic Power Receiver," AIP Advances, 8, 045018 (2018). [DOI:10.1063/1.5024243]
Press releases, NAIST, JST, EurekAlert
W. Nattakarn, T. Ishizu, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda*, M. Sawan, and J. Ohta, "CMOS-based Optical Energy Harvesting Circuit for Biomedical and Internet of Things Devices," Jpn. J. Appl. Phys. 57(4S) 04FM05 (2018. [DOI:10.7567/JJAP.57.04FM05]
T. Noda, M. Haruta, K. Sasagawa, T. Tokuda, and J. Ohta, "Functional validation of intelligent retinal stimulator using microchip-embedded smart electrode," Sens. Mater. 30 (2), pp. 167-177 (2018). [DOI:10.18494/SAM.2018.1649]
Chung-Yu Wu, Po-Han Kuo, Po-Kang Lin, Po-Chun Chen, Wei-Jie Sung, J. Ohta, T. Tokuda, and T. Noda, "A CMOS 256-pixel Photovoltaics-powered Implantable Chip with Active Pixel Sensors and Iridium-oxide Electrodes for Subretinal Prostheses," Sens. Mater. 30 (2), pp. 193-211 (2018). [DOI:10.18494/SAM.2018.1664]
2017
Hiroaki Takehara, K. Osawa, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "On-chip cell analysis platform: implementation of contactfluorescence microscopy in microfluidic chips," AIP Advances 7, 095213 (2017). [DOI:10.1063/1.4986872]
M. Haruta, N. Kamiyama, S. Nakajima, M. Motoyama, M. Kawahara, Y. Ohta, A. Yamasaki, H. Takehara, T. Noda, K. Sasagawa, Y. Ishikawa, T. Tokuda, H. Hashimoto, and J. Ohta, “Implantable optogenetic device with CMOS IC technology for simultaneous optical measurement and stimulation,” Jpn J. Appl. Phys 56, 057001 (2017). [DOI:10.7567/JJAP.56.057001]
M. Kuwabara, H. Tashiro, Y. Terasawa, Y. Nakano, Y. Yoshimura, K. Osawa, T. Noda, T. Tokuda, and J. Ohta, "Long-Term Analysis of In Vivo Characteristics of Recording Electrode Using Electrochemical Impedance Spectroscopy, " Sensors and Materials 29(12), pp. 1689-1702 (2017). [DOI:10.18494/SAM.2017.1635]
M. Kuwabara, H. Tashiro, Y. Terasawa, Koji Osawa, T. Tokuda, J. Ohta, Takashi Fujikado, "Development of chronic implantable electrodes for long-term visual evoked potential recording in rabbits," The Advanced Biomedical Engineering (ABE) , vol. 6, pp. 59-67, (2017). [DOI:10.14326/abe.6.59]
H. Tashiro, Y. Terasawa, M. Kuwabara, K. Osawa, T. Tokuda, J. Ohta, T. Fujikado, "Initial Evaluation of the Safety and Durability of Retinal Prostheses Based on Suprachoroidal-transretinal Stimulation using Bullet-shaped Platinum Electrodes," The Advanced Biomedical Engineering (ABE) 6, pp. 8-14 (2017). [DOI:10.14326/abe.6.8]
T. Sato, H. Dejima, M. Haruta, S. Kamikawa, H. Nakazawa, T. Tokuda, J. Ohta, and S. Kanaya, "Automatic Determination of Blood Flow Velocity in Brain Microvessels in a Cerebral Infarction Model Mouse Using a Small Implantable CMOS Imaging Device, " The Advanced Biomedical Engineering (ABE) 6, pp. 68-75 (2017). [DOI:10.14326/abe.6.68]
J. Ohta, T. Noda, Kenzo Shodo, Y. Terasawa, M. Haruta, K. Sasagawa, T. Tokuda, "Stimulator design of retinal prosthesis," IEICE Trans. Electron., vol. E100-C, no. 6, pp. 523-528 (2017). [DOI:10.1587/transele.E100.C.523]
J. Ohta, Y. Ohta , Hiroaki Takehara,T. Noda, K. Sasagawa, T. Tokuda, M. Haruta, T. Kobayashi, Y. M. Akay, M. Akay, "Implantable microimaging device for observing brain activities of rodents," Proc. IEEE, vol. 105, no. 1, pp. 158-166, Jan. 2017. [DOI:10.1109/JPROC.2016.2585585]
Hiroaki Takehara, H. Hayami, K. Nagata, Y. Ohta, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Implantable microsized image sensor for data transmission with intravital optical communication," The Journal of Engineering 2017(1) January pp. 4-6. [DOI:10.1049/joe.2016.0311]
2016
T. Fujisawa, T. Noda, M. Hayashi, R. Kobe, H. Tashiro, Hiroaki Takehara, K. Sasagawa, T. Tokuda, and J. Ohta, "Performance Improvement of a Micro-stimulus Electrode for Retinal Prosthesis by Introducing a High-Performance Material and a Three-Dimensional Structure," Sensors and Materials 28, pp. 1303-1315 (2016). [DOI:10.18494/SAM.2016.1398]
A. Wuthayavanich, M. Haruta, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Miniature Imaging Device with a Portable Processing System for Fluorescence Detection of Nitric Oxide in Living," Sensors and Materials 28, pp. 1317-1327 (2016). [DOI:10.18494/SAM.2016.1401]
H. Tashiro, Y. Terasawa, K. Haraguchi, K. Osawa, T. Noda, T. Tokuda, ans J. Ohta, "Feasibility Study of High-Performance Implantable Stimulation Electrode with Nanocomposite Gel Coating as a Brain-Machine Interface Device," Sensors and Materials 28, pp. 1283-1293 (2016). [DOI:10.18494/SAM.2016.1371]
T. Tokuda, T. Kawamura, K. Masuda, T. Hirai, Hironari Takehara, Y. Ohta, M. Motoyaa, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Okitsu, S. Takeuchi, and J. Ohta, "In-vitro long-term performance evaluation and improvement in the response time of CMOS-based implantable glucose sensors," IEEE Design & Test 33, pp. 37-48 (2016). [DOI:10.1109/MDAT.2016.2560137]
H. Hayami, Hiroaki Takehara, K. Nagata, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Wireless image-data transmission from an implanted image sensor through a living mouse brain by intra body communication," Jpn. J. Appl. Phys. 55, 04EM03 (2016). [DOI:10.7567/JJAP.55.04EM03]
T. Kobayashi, M. Haruta, K. Sasagawa, M. Matsumata, K. Eizumi, C. Kitsumoto, M. Motoyama, Y. Maezawa, Y. Ohta, T. Noda, T. Tokuda, Y. Ishikawa, and J. Ohta, “Optical communication with brain cells by means of an implanted duplex micro-device with optogenetics and Ca2+ fluoroimaging,” Scientific Reports 6, pp. 1-13 (2016). [DOI:10.1038/srep21247]
T. Yamaguchi, Hiroaki Takehara, Y. Sunaga, M. Haruta, M. Motoyama, Y. Ohta, T. Noda, K. Sasagawa, T. Tokuda, and J, Ohta, "Implantable self-reset CMOS image sensor and its application to hemodynamic response detection in living mouse brain," Jpn. J. Appl. Phys. 55, 04EM02 (2016). [DOI:10.7567/JJAP.55.04EM02]
Hiroaki Takehara, Y. Katsuragi, Y. Ohta, M. Motoyama, Hironari Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Implantable micro-optical semiconductor devices for optical theranostics in deep tissue," Journal：Appl. Phys. Express 9, 047001 (2016). [DOI:10.7567/APEX.9.047001]
Hironari Takehara, M. Nagasaki, K. Sasagawa, Hiroaki Takehara, T. Noda, T. Tokuda, and J. Ohta, "A micro light pipe array with an excitation attenuation filter for lensless digital enzyme-LINKed immunosorbent assay," Jpn. J. Appl. Phys., 55(3S2), p.03DF03, (2016). [DOI:10.7567/JJAP.55.03DF03]
Y. Sunaga, H. Yamaura, M. Haruta, T. Yamaguchi, M. Motoyama, Y. Ohta, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, Y. Yoshimura, and J. Ohta, "Implantable imaging device for brain functional imaging system using flavoprotein fluorescence," Jpn. J. Appl. Phys., 55(3S2), p.03DF02, (2016). [DOI:10.7567/JJAP.55.03DF02]
T. Tokuda, Hiroaki Takehara, T. Noda, K. Sasagawa, and J. Ohta, "CMOS-Based Optoelectronic On-Chip Neural Interface Device," IEICE Trans. Electron., E99.C(2) pp.165-172, 2016. [Invited paper. [DOI:10.1587/transele.E99.C.165]
Y. Terasawa, H. Tashiro, Y. Nakano, T. Tokuda, and J. Ohta, "Mechanical Machining-based Three-Dimensional Electrode Array for Chronic Neural Stimulation," The Advanced Biomedical Engineering (ABE) 5, pp.137-141 (2016). [DOI:10.14326/abe.5.137]
2015
T. Yamaguchi, Y. Sunaga, M. Haruta, M. Motoyama, Y. Ohta, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Tokuda, and Ohta, "Fluorescence imaging under background light with a self-reset CMOS image sensor," The Journal of Engineering, Nov. 2015. [DOI:10.1049/joe.2015.0046]
K. Sasagawa, T. Yamaguchi, M. Haruta, Y. Sunaga, Hironari Takehara, Hiroaki. Takehara, T. Noda, T. Tokuda, and J. Ohta, "An Implantable CMOS Image Sensor with Self-Reset Pixels for Functional Brain Imaging," IEEE Transactions on Electron Devices, 63(1), pp. 215-222 (2015). [DOI:10.1109/TED.2015.2454435]
T. Noda, Y. Matsuzaka, SeokBeom Kim, H. Takehara, K. Sasagawa, T. Tokuda, H. Mushiake, H. Onodera, and J. Ohta, "Magnetic-thrust Flexible Electrode with Integrated Pre-amplifier for Neural Recording," Sensors and Materials, 27(11), 1079-1089 (2015). [DOI:10.18494/SAM.2015.1145]
T. Kawamura, K. Masuda, T. Hirai, Y. Ohta, M. Motoyama, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, T. Okitsu, S. Takeuchi and J. Ohta, "CMOS-based implantable glucose monitoring device with improved performance and reduced invasiveness," Electronics Letters, 51(10), pp. 738-740 (2015. [DOI:10.1049/el.2015.0612]
Hiroaki Takehara, Y. Ohta, M. Motoyama, M. Haruta, M. Nagasaki, Hironari Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Intravital fluorescence imaging of mouse brain using implantable semiconductor devices and epi-illumination of biological tissue," Biomedical Optics Express, 6(5), pp. 1553-1564 (2015. [DOI:10.1364/BOE.6.001553]
M. Haruta, Y. Sunaga, T. Yamaguchi, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda and J. Ohta, "Intrinsic signal imaging of brain function using a small implantable CMOS imaging device," Jpn. J. Appl. Phys, 54, 04DL10 (2015. [DOI:10.7567/JJAP.54.04DL10]
2014
T. Noda, K. Sasagawa, T. Tokuda, H. Kanda, Y. Terasawa, H. Tashiro, T. Fujikado, and J. Ohta, "Fabrication of Fork-Shaped Retinal Stimulator Integrated with CMOS Microchips for Extension of Viewing Angle," Sensors and Materials, 26(8), pp.637-648 (2014. [DOI:10.18494/SAM.2014.1029]
T. Tokuda, M. Takahashi, K. Uejima, K. Masuda, T. Kawamura, Y. Ohta, M. Motoyoama, T. Noda, K. Sasagawa, T. Okitsu, S. Takeuchi, and J. Ohta, "CMOS image sensor-based implantable glucose sensor using glucose-responsive fluorescent hydrogel," Biomedical Optics Express, 5(11) pp. 3859-3870 (2014. [DOI:10.1364/BOE.5.003859]
T. Tokuda, N. Wakama, K. Terao, K. Masuda, R. Mori, T. Noda, K. Sasagawa, Y. Nishiyama, K. Kakiuchi, and J. Ohta, "CMOS sensor-based palm-sized in-line optical analysis device for microchemistry systems," Electronics Letters, 50 (17), pp. 1222-1224 (2014. [DOI:10.1049/el.2014.1572]
Related article: Interview "Although it is a stage of proof-of-concept, it is expected to be a powerful monitoring solution for high-performance microchemistry systems in the future. [DOI:10.1049/el.2014.2789]
T. Tokuda, K. sasagawa, N. Wakama, T. Noda, K. Kakiuchi, and J. Ohta, "Demonstrations of polarization imaging capability and novel functionality of polarization-analyzing CMOS image sensor with 65 nm standard CMOS process," ITE Transactions on Media Technology and Applications, 2, pp. 131-138 (2014) . [DOI:10.3169/mta.2.131]
T. Noda, K. Sasagawa, T. Tokuda, Y. Terasawa, H. Takashiro, H. Kanda, T. Fujikado, and J. Ohta, "Performance improvement and functionalization of an electrode array for retinal prosthesis by iridium oxide coating and introduction of smart-wiring technology using CMOS microchips," Sensors and Actuators A: Physcal, 211, pp. 27-37 (2014). [DOI:10.1016/j.sna.2014.03.001]
M. Haruta, C. Kitsumoto, Y. Sunaga, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "An implantable CMOS device for blood-flow imaging under freely moving experiments of rats," Jpn. J. Appl. Phys. 53, pp. 04EL05-1~6 (2014). [DOI:10.7567/JJAP.53.04EL05]
H. Takehara, K. Miyazawa, T. Noda, K. Sasagawa, T. Tokuda, S. H. Kim, R. Iino, H. Noji, and J. Ohta, "A CMOS Image Sensor Having Stacked Photodiodes for Lensless Observation System of Digital Enzyme-LINKed Immunosorbent Assay (ELISA)," Jpn. J. Appl. Phys. 53, pp. 04EL02-1~5 (2014). [DOI:10.7567/JJAP.53.04EL02]
T. Kobayashi, H. Masuda, C. Kitsumoto, M. Haruta, M. Motoyama, Y. Ohta, T. Noda, K. Sasagawa, T. Tokuda, S. Shiosaka, and J. Ohta, “Functional brain fluorescence plurimetry in rat by implantable concatenated CMOS imaging system,” Biosensors and Bioelectronics, 53, pp. 31-36 (2014). [DOI:10.1016/j.bios.2013.09.033]
H. Hayami, Y. Ishii, K. Sasagawa, T. Noda, T. Tokuda, and J. Ohta, “Digital signal transmission from fully implantable CMOS image sensor in simulated body environment,” Electronics Letters, 50 (12), pp. 851-853 (2014). [DOI:10.1049/el.2014.0765]
2013
N. Wakama, D. Okabayashi, T. Noda, K. Sasagawa, T. Tokuda, K. Kakiuchi and J. Ohta, "Polarisation analysing CMOS image sensor in 65-nm standard CMOS technology," Journal Of Engineering, Sepember 2013, 3pp (2013/09/17). [DOI:10.1364/OE.21.011132]
K. Sasagawa, S. Shishido, K. Ando, H. Matsuoka, T. Noda, T. Tokuda, K. Kaiuchi, and J. Ohta, "Image sensor pixel with on-chip high extinction ratio polarizer based on 65-nm standard CMOS technology," Optics Express, 21(9), pp. 11132-11140 (2013). [DOI:10.1364/OE.21.011132]
T. Tokuda, H. Matsuoka, N. Tachikawa, N. Wakama, K. Terao, M. Shibata, T. Noda, K. Sasagawa, Y. Nishiyama, K. Kakiuchi, and J. Ohta, "CMOS sensor-based miniaturized in-line dual-functional optical analyser for high-speed, in situ chirality monitoring," Sensors and Actuators B: Chemical, 176, pp.1032 - 1037 (2013). [DOI:10.1016/j.snb.2012.09.042]
Y. Sawadsaringkarn, T. Miyatani, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "A CMOS optoelectronic neural interface device based on an image sensor with on-chip light stimulation and extracellular neural signal recording for optogenetics," ITE Transactions on Media Technology and Applications, 1(2) pp. 184-189 (2013) . [DOI:10.3169/mta.1.184]
Yi-Li Pan, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Sputtering Condition Optimization of Sputtered IrOx and TiN Stimulus Electrodes for Retinal Prosthesis," IEEJ Transaction on Electrical and Electronic Engineering, 8(3) pp. 310-312 (2013). [DOI:10.1002/tee.21860]
2012
T. Noda, K. Sasagawa, T. Tokuda, Y. Terasawa, H. Tashiro, H. Kanda, T. Fujikado and J. Ohta, "A Smart Electrode Array Device with CMOS Multi-Chip Architecture for Neural Interface," Electronics Letters, 48(21) pp.1328-1329 (2012). [DOI:10.1049/el.2012.2784]
T. Kobayashi, M. Motoyama, H. Masuda, Y. Ohta, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, H. Tamura, Y. Ishikawa, S. Shiosaka, and J. Ohta, "Novel implantable imaging system for enabling simultaneous multiplanar and multipoint analysis for fluorescence potentiometry in the visual cortex," Biosensors and Bioelectronics, 38(1), pp.321-330 (2012. [DOI:10.1016/j.bios.2012.06.035]
K. Sasagawa, K. Ando, T. Kobayashi, T. Noda, T. Tokuda, S. H. Kim, R. Iino, H. Noji, J. Ohta, "Complementary metal-oxide-semiconductor image sensor with micro chamber array for fluorescent beads counting," Jpn. J. Appl. Phys, 51(2), 02BL01 (4 pages) (2012. [DOI:10.1143/JJAP.51.02BL01]
Takashi Tokuda, Hiroshi Kimura, Tomoaki Miyatani, Yasuyo Maezawa, Takuma Kobayashi, Toshihiko Noda, Kiyotaka Sasagawa and Jun Ohta, "CMOS on-chip bio-imaging sensor with integrated micro light source array for optogenetics," Electron. Lett. 48, pp. 312-314 (2012. [DOI:10.1049/el.2011.4087]
Arata Nakjima, Hiroshi Kimura, Yosmongkol Sawadsaringkarn, Yasuyo Maezawa, Takuma Kobayashi, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Yasuyuki Ishikawa, Sadao Shiosaka, and Jun Ohta, "CMOS image sensor integrated with micro-LED and multielectrode arrays for the patterned photostimulation and multichannel recording of neuronal tissue," Optics Express, Vol. 20(6), pp. 6097-6108 (2012). [DOI:10.1364/OE.20.006097]
2011
Takashi Tokuda, Toshihiko Noda, Kiyotaka Sasagawa and Jun Ohta, "Optical and Electric Multifunctional CMOS Image Sensors for On-Chip Biosensing Applications," MDPI.com Materials 4(1) (2011) pp. 84-10. [DOI:10.3390/ma4010084]
A. Nakajima, T. Noda, K. Sasagawa, T. Tokuda, Y. Ishikawa, S. Shiosaka, J. Ohta, "Planar Multielectrode Array Coupled Complementary Metal Oxide Semiconductor Image Sensor for In vitro Electrophysiology," Jpn. J. Appl. Phys. 50 (4), 04Dl04-1-6, 2011. DOI:10.1143/JJAP.50.04DL04]
J. Ohta, T. Kobayashi, T. Noda, K. Sasagawa, T. Tokuda, "CMOS Imaging Devices for Biomedical Applications (Invited)," IEICE Trans. Commun. E94-B (9), 2454-2460, 2011.
T. Tokuda, Y. Takeuchi, Y. Sagawa, T. Noda, K. Sasagawa, K. Nishida, T. Fujikado, and J. Ohta, "Development and in-vivo Demonstration of CMOS-Based Multichip Retinal Stimulator With Simultaneous Multisite Stimulation Capability," IEEE Trans. Biomed. Circuits and Systems, 4 (6) (2010) pp. 445-453. [DOI:10.1109/TBCAS.2010.2078508]
T. Kobayashi, A. Tagawa, T. Noda, K. Sasagawa, T. Tokuda, Y. Hatanaka, H. Tamura, Y. Ishikawa, S. Shiosaka, J. Ohta, "Potentiometric Dye Imaging for Pheochromocytoma and Cortical Neurons with a Novel Measurement System Using an Integrated Complementary Metal-Oxide Semiconductor Imaging Device," Jpn. J. Appl. Phys 49 (2010) 117001. [DOI:10.1143/JJAP.49.117001]
K. Sasagawa, M. Mitani, T. Sugiyama, T. Noda, T. Tokuda, and J. Ohta, "Implantable Image Sensor with Light Guide Array Plate for Bioimaging," Jpn. J. Appl. Phys 49 (2010) 04DL. [DOI:10.1143/JJAP.49.04DL03]
A. Tagawa, M. Mitani, H. Minami, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "CMOS-based Multimodal Sensor for In Vivo Brain Function Imaging with a Function for Simultaneous Cell Stimulation," Jpn. J. Appl. Phys 49 (2010) 04DL02. [DOI:10.1143/JJAP.49.04DL02]
A. Tagawa, H. Minami, M. Mitani, T. Noda, K. Sasagawa, T. Tokuda, H. Tamura, Y. Hatanaka, Y. Ishikawa, S. Shiosaka, and J. Ohta, "Multimodal Complementary Metal-Oxide-Semiconductor Sensor device for Imaging of Fluorescence and Electrical Potential in Deep Brain of Mouse," Jpn. J. Appl. Phys 49 (2010) 01AG02. [DOI:10.1143/JJAP.49.01AG02]
K. Minakawa, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Microfluid Ejection Device Based on Complementary Metal-Oxide-Semiconductor Technology as an Artificial Synapse," Jpn. J. Appl. Phys 49 (2010) 01AG03. [DOI:10.1143/JJAP.49.01AG03]
2009
Takashi Tokuda, Kohei Hiyama, Shigeki Sawamura, Kiyotaka Sasagawa, Yasuo Terasawa, Kentaro Nishida, Yoshiyuki Kitaguchi, Takashi Fujikado, Yaso Tano, and Jun Ohta,"CMOS-Based Multichip Networked Flexible Retinal Stimulator Designed for Image-Based Retinal Prosthesis," IEEE Transactions on Electron Devices, 56(11) (2009), pp.2577-2585. [DOI:10.1109/TED.2009.2030552]
Takashi Tokuda, Hirofumi Yamada, Kiyotaka Sasagawa, and Jun Ohta,"Polarization-Analyzing CMOS Image Sensor with Monolithically Embedded Polarizer for Microchemistry Systems," IEEE Transactions on Biomedical Circuits and Systems, 3(5) (2009). pp.259-266. [DOI:10.1109/TBCAS.2009.2022835]
Takashi Tokuda, Sho Sato, Hirofumi Yamada, Kiyotaka Sasagawa, and Jun Ohta, "Polarisation-analysing CMOS photosensor with monolithically embedded wire grid polarizer," Electronics Letter, 45(4) 2009 pp.228-230. [DOI:10.1049/el:20093132]
Sanshiro Shishido, Keiichiro Kagawa, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, "A low-voltage CMOS image sensor using a pulse-width-modulation scheme for biomedical applications," Japanese Journal of Applied Physics, 48(4) (2009), 04C193 (5pages. [DOI:10.1143/JJAP.48.04C193]
Ayato Tagawa, Asako Higuchi, Tetsuya Sugiyama, Kiyotaka Sasagawa, Takashi Tokuda, Hideki Tamura, Yumiko Hatanaka, Sadao Shiosaka, and Jun Ohta, "Development of Complementary Metal Oxide Semiconductor Imaging Devices for Detecting Green Fluorescent Protein in the Deep Brain of a Freely Moving Mouse," Japanese Journal of Applied Physics, 48(4) (2009)), 04C195). [DOI:10.1143/JJAP.48.04C195]
Kyosuke Minakawa, Hirofumi Yamada, Kyotaka Sasagawa, Takashi Tokuda, and Jun Ohta, "Micro-Chamber Device Equipped with CMOS Optical Polarization Analyzer Chip for Micro Total Analysis System," Japanese Journal of Applied Physics, 48(4) (2009), 04C19. [DOI:10.1143/JJAP.48.04C192]
Jun Ohta, Takashi Tokuda, Kiyotaka Sasagawa and Toshihiko Noda, "Implantable CMOS Biomedical Devices," MDPI.com Sensors 9(11) (2009) pp. 9073-909. [DOI:10.3390/s91109073]
T. Tokuda; R. Asano; S. Sugitani; M. Taniyama; Y. Terasawa; M. Nunoshita; K. Nakauchi; T. Fujikado; Y. Tano; J. Ohta, "Retinal stimulation on rabbit using CMOS-based multi-chip flexible stimulator toward retinal prosthesis," Jpn. J. Appl. Phys. 47 (4B), 2008, 3220-3225. [DOI:10.1143/JJAP.47.3220]
D. C. Ng, H. Tamura, T. Mizuno, T. Tokuda, M. Nunoshita, Y. Ishikawa, S. Shiosaka, J Ohta, "An implantable and fully-integrated complementary metal-oxide semiconductor device for in vivo neural imaging and electrical interfacing with the mouse hippocampus," Sensors & Actuators A, 145-146, 176-186, 2008. [DOI:10.1016/j.sna.2007.11.020]
D. C. Ng, T. Nakagawa, T. Mizuno, T. Tokuda, M. Nunoshita, H. Tamura, Y. Ishikawa, S. Shiosaka, J. Ohta, "Integrated in vivo neural imaging and interface CMOS devices: design, packaging, and implementation," IEEE Sensors J, 8 (1), 121-130, 2008.[DOI:10.1109/JSEN.2007.912921]
David C. Ng, Takashi Tokuda, Sadao Shiosaka, Yasuo Tano and Jun Ohta, "Implantable Microimagers," MDPI.com Sensors 2008, 8(5) (2008) pp. 3183-320. [DOI:10.3390/s8053183]
H. Tamura, D. C. Ng, T. Tokuda, H. Naoki, T. Nakagawa, T. Mizuno, Y. Hatanaka, Y. Ishikawa, J. Ohta, and S. Shiosaka, “One-chip sensing device (biomedical photonic LSI) enabled to assess hippocampal steep and gradual up-regulated proteolytic activities.,” Journal of neuroscience methods, 173 (1) (2008) pp. 114-120. [DOI:10.1016/j.jneumeth.2008.06.002]
2007
T. Tokuda, K. Tanaka, M. Matsuo, K. Kagawa, M. Nunoshita, J. Ohta, "Optical and Electrochemical dual-image CMOS sensor for on-chip biomolecular sensing applications," Sensors & Actuators: A, .135 (2) 315-322, 2007 April. [DOI:10.1016/j.sna.2006.08.027]
T. Tokuda, S. Sugitani, M. Taniyama, A. Uehara, Y. Terasawa, K. Kagawa, M. Nunoshita, Y. Tano, J. Ohta, "Fabrication and validation of a multi-chip neural stimulator for in vivo experiments toward retinal prosthesis," Jpn. J. Appl. Phys., 46 (4B), 2792-2798, 2007. [DOI:10.1143/JJAP.46.2792]
T. Tokuda, S. Sugitani, M. Taniyama, A. Uehara, Y. Terasawa, K. Kagawa, M. Nunoshita, J. Ohta, "A CMOS LSI-based multichip flexible neural stimulation device with embedded bulk Pt electrodes," Electron. Lett., 43 (1), 10 - 11 , 2007. [DOI:10.1049/el:20072581]
T. Tokuda , I.Kadowaki , .K Kagawa , M. Nunoshita , J. Ohta, "A new imaging scheme for on-chip DNA spots with optical / potential dual-image CMOS sensor in dry situation," Jpn. J. Appl. Phys., 46 (4B), 2806-2810, 2007. [DOI:10.1143/JJAP.46.2806]
D.C. Ng, T. Nakagawa, T. Tokuda, M. Nunoshita, H. Tamura, Y. Ishikawa, S. Shiosaka, J. Ohta, "Development of a Fully Integrated Complementary Metal-Oxide Semiconductor Image Sensor-based Device for Real-time In vivo Fluorescence Imaging inside the Mouse Hippocampus," Jpn. J. Appl. Phys., 46 (4B), 2811-2819, 2007. [DOI:10.1143/JJAP.46.2811]
J. Ohta, T. Tokuda, K. Kagawa, S. Sugitani, M. Taniyama, A. Uehara, Y. Terasawa, K. Nakauchi, T. Fujikado, Y. Tano, "Laboratory Investigation of Microelectronics-Based Stimulators for Large-Scale Suprachroidal Transretinal Stimulation (STS)," J. Neural Eng. 4(1), S85-S91, 2007. [DOI:10.1088/1741-2560/4/1/S10]
2006
T. Tokuda, A. Yamamoto, K. Kagawa, M. Nunoshita, J. Ohta, "A CMOS image sensor with optical and potential dual imaging function for on-chip bioscientific applications," Sensors & Actuators: A 125 (2) 273-280 , 2006. [DOI:10.1016/j.sna.2005.08.023]
Y. Terasawa, H. Tashiro, A. Uehara, T. Saito, M. Ozawa, T. Tokuda, J. Ohta, "The development of a multichnanel electrode array for retinal prosthesis," J. Artif. Organs , 9 (4) 263-266, 2006. [DOI:10.1007/s10047-006-0352-1]
T. Furumiya, S. Yamamoto, K. Kagawa, T. Tokuda, M. Nunoshita, J. Ohta, "Optimization of electrical stimulus pulse parameter for low-power operation of a retinal prosthetic device," Jpn. J. Appl. Phys., 45 (19),L505 - L507, 2006. [DOI:10.1143/JJAP.45.L505]
D. C. Ng, T. Tokuda, A. Yamamoto, M. Matsuo, M. Nunoshita, H. Tamura, Y. Ishikawa, S. Shiosaka, J. Ohta, "On-chip biofluorescence imaging inside a brain tissue phantom using a CMOS image sensor for in vivo brain imaging verification," Sensros & Actuators B, 119 (1), 262-274, 2006. [DOI:10.1016/j.snb.2005.12.020]
D. C. Ng, T. Furumiya, K. Yasuoka, A. Uehara, K. Kagawa, T. Tokuda, M. Nunoshita, J. Ohta, "Pulse Frequency Modulation-based CMOS Image Sensor for Subretinal Stimulation," IEEE Trans. Circuits and Systems II, 53 (6), 487-491, 2006. [DOI:10.1109/TCSII.2006.875334]
D. C. Ng, T. Tokuda, A. Yamamoto, M. Matsuo, M. Nunoshita,H. Tamura, Y. Ishikawa, S. Shiosaka, J. Ohta, "A CMOS Image Sensor for On-chip in vitro and in vivo Imaging of the Mouse Hippocampus," Jpn. J. Appl. Phys., 45 (4B), 3799-3806, 2006. [DOI:10.1143/JJAP.45.3799]
D. C. Ng, H. Tamura, T. Tokuda, A. Yamamoto, M. Matsuo, M. Nunoshita, Y. Ishikawa, S. Shiosaka, J. Ohta, "Real Time In vivo Imaging and Measurement of Serine Protease Activity in the Mouse Hippocampus Using a Dedicated CMOS Imaging Device," Neuroscience Method,156 (1-2), 23-30, 2006. [DOI:10.1016/j.jneumeth.2006.02.005]
T. Furumiya, D. C. Ng, K. Yasuoka, K. Kagawa, T. Tokuda, M. Nunoshita, J. Ohta, "Functional verification of pulse frequency modulation-based image sensor for retinal prosthesis by in vitro electrophysiological experiments using frog retina," Biosensors and Bioelectronics, 21 (7), 1059-1068 , 2006. [DOI:10.1016/j.bios.2005.04.001]
J. Ohta, T. Tokuda, K. Kagawa, T. Furumiya,A. Uehara, Y. Terasawa, M. Ozawa, T. Fujikado, Y. Tano, "Silicon LSI-Based Smart Stimulators for Retinal Prosthesis," IEEE Eng. Med. & Biol. 25 (5), 47-59, 2006. [DOI:10.1109/MEMB.2006.1705747]
2005
T. Tokuda, Yi-Li Pan, A. Uehara, K. Kagawa, M. Nunoshita, J.Ohta, "Flexible and extendible neural interface device based on cooperative multi-chip CMOS LSI architecture," Sensors & Actuators A, 122 (1), 88-98, 2005. [DOI:10.1016/j.sna.2005.03.065]
Yi-Li Pan, T. Tokuda, A. Uehara, K. Kagawa, J. Ohta, M. Nunoshita, "Flexible and Extendible Neural Stimulation Device with Distributed Multi-chip Architecture for Retinal Prosthesis," Jpn. J. Appl. Phys.,44 (4B), 2099-2103, 2005. [DOI:10.1143/JJAP.44.2099]
A. Uehara, Yi-Li Pan, K. Kagawa, T. Tokuda, J. Ohta, M. Nunoshita,"Micro-sized photo detecting stimulator array for retinal prosthesis by distributed sensor network approach," Sensors & Actuators A, 120 (1), 78-87, 2005. [DOI:10.1016/j.sna.2004.11.023]
T. Tokuda, T. Nakano, D. Fujiu, J. Ohta, M, Nunoshita, "Nanoscopic observation of bistable piezoresponse, polarization retention, and domain imaging of sub-50nmthick (Pb,La)(Zr,Ti)O3 thin films," Mater. Lett. 59 (10), 1234-1238, 2005. [DOI:10.1016/j.matlet.2004.10.081]
2004
T. Tokuda, Y. Sakano, D. Mori, J. Ohta, M. Nunoshita, P. O. Vaccaro, K. Kubota, A. Vorob'ev, N. Saito, "Fabrication and current-drive of SiGe/Si "Micro-origami" epitaxial MEMS device on a silicon-on-insulator substrate," Electron. Lett.,40 (21), 1333-1334, 2004. [DOI:10.1049/el:20046143]
A. Uehara, K. Kagawa, T. Tokuda, J. Ohta, M. Nunoshita, "A high-sensitive digital photosensor using MOS interface-trap charge pumping," IEICE Electronics Express, 1 (18), 556-561, 2004. [DOI:10.1587/elex.1.556]
K. Kagawa, K. Yasuoka, D. C. Ng, T. Furumiya, T. Tokuda, J. Ohta, M. Nunoshita, "Pulse-domain digital image processing for vision chips employing low-voltage operation in deep-submicron technologies," IEEE Selected Topics Quantum Electron., 10 (4), 816-828, 2004. [DOI:10.1109/JSTQE.2004.833888]
K. Kagawa, N. Yoshida, T. Tokuda, J. Ohta, M. Nunoshita, "Building a Simple Model of A Pulse-Frequency-Modulation Photosensor and Demonstration of a 128x128-pixel Pulse- Freqeuncy-Modulation Image Sensor Fabricated in a Standard 0.35-um Complementaly Metal-Oxide Semiconductor Technology," Optical Review, 11 (3), 176-181, 2004.
A. Uehara, K. Kagawa, T. Tokuda, J. Ohta, M. Nunoshita, "CMOS retinal prosthesis with on-chip electrode impedance measurement," Electron. Lett.40 (10), 582-583, 2004. [DOI:10.1049/el:20040410]
David C. Ng, K. Isakari, A. Uehara, K. Kagawa, T. Tokuda, J. Ohta, and M. Nunoshita, "A study of bending effect on pulsed frequency modulation based photosensor for retinal prosthesis," Jpn. J. Appl. Phys., 42 (12), pp.7621-7624 (2003). [DOI:10.1143/JJAP.42.7621]
A. Uehara, K. Kagawa, T. Tokuda, J. Ohta, and M. Nunoshita,"Back-illuminated pulsefrequency- modulated photosensor using a silicon-on-sapphire technology developed for use as an epi-retinal prosthesis device," Electron. Lett.39(15), 1102-1104 (2003). [DOI:10.1049/el:20030742]
K. Kagawa, K. Isakari, T. Furumiya, A. Uehara, T. Tokuda, J. Ohta, M. Nunoshita,,"Pixel design of a pulsed CMOS image sensor for retinal prosthesis with digital photosensitivity control," Electron. Lett. 39(5) 419-421, 2003. [DOI:10.1049/el:20030325]
A. Vorob'ev, P.O. Vaccaro, K. Kubota, T. Aida, T. Tokuda, T. Hayashi, Y. Sakano, J. Ohta and M. Nunoshita, "SiGe/Si microtubes fabricated on a silicon-on-insulator substrate," J. Physics D: Appl. Phys. 36 L67-L69, 2003. [DOI:10.1088/0022-3727/36/17/102]
M. Okinaka, Y. Hamana, T. Tokuda, J. Ohta and M. Nunoshita,"MBE growth mode and C incorporation of GeC epilayers on Si(0 0 1) substrates using an arc plasma gun as a novel C source," J. Cryst. Growth 249(1&2) 78-86, 2003. [DOI:10.1016/S0022-0248(02)02107-3]
M. Okinaka, Y. Hamana, T. Tokuda, J. Ohta and M. Nunoshita "Effect of lower growthtemperture on C incorporation in GeC epilayers on Si 001) grown by MBE" Physica E 16(3-4) 473-475, 2003. [DOI:10.1016/S1386-9477(02)00659-8]
T. Tokuda, and S.Noda, "Wafer Fusion Technique Applied to GaN/GaN system," Jpn.J.Appl.Phys. 39 (6B) pp. L572-L574, 2000. [DOI:10.1143/JJAP.39.L572]
M. Imada, S.Noda, A.Chutinanan, T. Tokuda, M.Murata, and G.Sasaki, "Coherent two-dimensional lasing action in surface-emitting laser with traiangular-lattice photonic crystal structure," Appl.Phys.Lett. 75 (3) pp. 316-318, 1999. [DOI:10.1063/1.124361]
T. Tokuda, A.Wakahara, S.Noda, and A.Sasaki, "Growth characteristics of GaInN on (0001)sapphire by plasma-excited organometallic vapor phase epitaxy," J.Cryst.Growth 187 (2) pp. 178-184, 1998. [DOI:10.1016/S0022-0248(97)00865-8]
T. Tokuda, A.Wakahara, S.Noda, and A.Sasaki, "Plasma-excited organometallic vapor phase epitaxy of GaN on (0001) sapphire," J.Cryst.Growth 173 (3-4) pp. 237-243, 1997. [DOI:10.1016/S0022-0248(96)01045-7]
A.Wakahara, T. Tokuda, X.-Z. Dang, S.Noda, and A.Sasaki, "Compositional inhomogeneity and immiscibility of GaInN ternaly alloy," Appl.Phys.Lett. 71 (7) pp. 906-908, 1997. [DOI:10.1063/1.119684]
T. Tokuda, A.Wakahara, S.Noda, and A.Sasaki, "Substrate nitridation effect and low temperature growth of GaN on sapphire (0001) by plasma-excited organometallic vapor-phase epitaxy," J.Cryst.Growth 183 (1-2) pp. 62-68, 1997. [DOI:10.1016/S0022-0248(97)00400-4]
A.Wakahara, T. Tokuda, and A.Sasaki, "Growth of GaN films by plasma-excited organometallic vapor phase epitaxy," Inst. Phys. Conf. Ser. 142 Chapter 5 pp. 883-886, 1996.
Y.Nabetani, N.Yamamoto, T. Tokuda, and A.Sasaki, "Island formation of InAs Grown on GaAs," J.Cryst.Growth 146, pp. 363-367, 1995. [DOI:10.1016/0022-0248(94)00562-1]
総説等/Reviews
著書 / Book (chapters)
J. Ohta and, T. Tokuda "Chapter 16. Implantable CMOS microphotonic devices," in "Optical MEMS, Nanophotonics, and Their Applications," ed. by Guangya Zhou and Chengkuo Lee, published on 2017/12/15 by CRC Press. [LINK]
T. Tokuda, and J. Ohta, "DNA Optical Readout Methods" in "Handbook of Biochips -Integrated Circuits and Systems for Biology and Medicine-," Springer (published online on 2015/8/28). [DOI:10.1007/978-1-4614-6623-9_10-1]
Jun Ohta, Takashi Tokuda, and Takashi Fujikado, "CMOS technologies for retinal prosthesis," in "Handbook of Bioelectronics: Directly Interfacing Electronics and Biological Systems," Chapter 25, Cambridge University Press (2015). ISBN: 1107040833
Takashi Tokuda, Toshihiko Noda, Kiyotaka Sasagawa, and Jun Ohta, "CMOS-Based Neural Interface Device for Optogenetics," in "Optogenetics -Light-Sensing Proteins and Their Applications-," Chapter 27 (pp. 375-389), Springer (2015), ISBN: 4431555153.[LINK]
徳田 崇, 太田 淳, 知っておきたいキーワード"オプトジェネティクス," 映像情報メディア学会誌 66(10) pp. 842-645 (2012).
徳田 崇, 技術解説"バイオチップ・バイオセンサ," 映像情報メディア学会誌 62(3) pp. 329-336 (2008).
国際会議発表/International Conferences
国際会議招待講演・基調講演 / Invited
Takashi Tokuda, Makito Haruta, Kiyotaka Sasagawa, Jun Ohta 1mm3-sized optogenetic stimulator with CMOS-integrated optical power receiver The 1st Optical Wireless and Fiber Power Transmission Conference, Pacifico Yokohama 2019/4/25
Takashi Tokuda, Makito Haruta, Kiyotaka Sasagawa, Jun Ohta Implantable optoelectronic devices based on CMOS LSI technology ACS Fall 2019 National Meeting & Exposition in San Diego, CA 2019/8/25
Makito Haruta, Minoru Kubo, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, "A small plant growth monitoring device for agriculture use(invited)," The 7th International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS & Applications 2018/2019Bio4Apps 2018/2019, 2019.1.6. Harbin Institute of Technology, China.
Kiyotaka Sasagawa, Ayaka Kimura, Yasumi Ohta, Makito Haruta, Toshihiko Noda, Takashi Tokuda, Jun Ohta, "Lensless fluorescence microscope(invited)," 4th International Workshop on Image Sensors and Imaging Systems (IWISS2018), 2018.11.29. Tokyo Institute of Technology, Tokyo.
Yoshinori Sunaga, Yasumi Ohta, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Y. Akay, M. Akay, Jun Ohta, "GCaMP and GFP imaging in VTA by an implantable imaging device," NEUROSCIENCE 2018, 2018.11.7. San Diego Convention Center, San Diego, USA.
Takashi Tokuda, Thanet Pakpuwadon, Nattakarn Wuthibenjaphonchai, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Jun Ohta, "CMOS-based, optically-powered implantable optogenetic stimulator(invited)," IEEE Life Sciences Conference (LSC2018), 2018.10.29. La Plaza - Banquet & Conference halls, Montreal, Quebec, Canada.
Takashi Tokuda, "Optical Energy Transfer for Biomedical and IoT technologies(invited)," 2018 NCTU/ NAIST Joint Workshop on Bioelectronic Medicine and Related Materials, 2018.9.7. Engineering Building 4, Conference Room 424, National Chiao Tung University, Hsinchu City, Taiwan.
Jun OHTA, Kiyotaka Sasagawa, Toshihiko Noda, Makito Haruta, Takashi Tokuda, "Miniaturized implantable CMOS devices for optical measurement and control of biological functions in rodents(invited)," IEEE-NEMS2018, 2018.4.25. Grand Hyatt Singapore, Singapore.
[Short course] T. Tokuda, “2.8 CMOS-Based Implantable Retinal Prosthesis Technology” in Circuit Short Course 2 “Bio-Sensors, Circuits, & Systems for Wearable and Implantable Medical Devices,” 2018/6/18 2018 Symposia on VLSI Technology and Circuit, 2018/6/18, Hilton Hawaiian Village, Honolulu, HI, USA
T. Tokuda, M. Haruta, T. Noda, K. Sasagawa, and J. Ohta, "CMOS-based optoelectronic devices for biomedical applications," The first International Workshopby the 174th Committee JSPS on Symbiosis of Biology and Nanodevices, 2017/12/21, Kyoto, Japan
T. Tokuda, M. Haruta, T. Noda, K. Sasagawa, and J. Ohta, "CMOS-Based Opto-Electric Neural Interface Devices for Optogenetics," 60th IEEE International Midwest Symposium on Circuits and Systems, A3L-E-3, 2017//8/7, Boston, MA, USA.
T. Tokuda, M. Haruta, T. Noda, K. Sasagawa, and J. Ohta, "CMOS-based integrated opto-electric neural interface devices(invited)," 9th International Conference on Molecular Electronics and bioelectronics（M&BE9）, June 2017.
J. Ohta, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, "Implantable micro photonic devices for biomedical applications," IEEE NEMS2017, Apr. 2017.
T. Tokuda, “CMOS-based implantable biodevices,” Inviter Seminar of The Quebec IEEE Engineering in Medicine and Biology / Circuits and Systems Chapter, 2016/10/28, Laval University, Quebec City, Canada.
T. Tokuda, T. Noda, K. Sasagawa, and J. Ohta, "Design and Evaluation of Implantable CMOS Chips," IEEE/ACM Workshop on Variability Modeling and Characterization, 2016/11/10, Doubletree Hotel, Austin, TX, USA.
T. Tokuda, S. Noguchi, S. Iwasaki, Hiroaki Takehara, T. Noda, K. Sasagawa, and J. Ohta, "CMOS-based opto-electronic neural interface devices for optogenetics," The 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC'16), 2016/08/16-20, Orland, FL, USA.
[Pleanary] T. Tokuda, and J. Ohta, "Implantable Micro-Optoelectronic Devices" CMOS Emerging Technologies, 2016/5/27, Montreal, Canada.
T. Tokuda, H. Takehara, T. Noda, K. Sasagawa, and J. Ohta, "Implantable bioimaging device based on CMOS image sensor technology," 2nd Asian Image Sensors and Imaging Systems Symposium, 2014/12/02, Campus Innovaion Center Tokyo, Tokyo, Japan.
T. Noda, H. Takehara, K. Sasagawa, T. Tokuda, and J. Ohta, "Smart electrode devices with CMOS microchips for retinal prosthesis," International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS and Applications 2014 (Bio4Apps 2014), 2014/11/17, Shanghai, China
K. Sasagawa, N. Wakama, T. Noda, T. Tokuda, K. Kakiuchi, and J. Ohta, "On-chip polarizer on image sensor using advanced CMOS technology,", Photonics West, [8974-17], 2014/02/04, The Moscone Center San Francisco, California, United States
T. Tokuda, “CMOS-based Bio-Implantable Neural Observation and Stimulation Device,” International Workshop on Biomedical Engineering Translational Research 2013, 2013/12/10, National Chiao Tung University, Hshinchu City, Taiwan.
J. Ohta, T. Noda, K. Sasagawa, and T. Tokuda, "Implantable micro CMOS imaging devices for biomedical applications,", IEEE Optical MEMS and Nanophotonics 2013, MM-S2.1, 2013/08/19, Kanazawa, Japan
T. Tokuda, T. Noda, K. Sasagawa, and J. Ohta, "Bio-Implantable CMOS Neural Interface Device with Integrated Micro LED," CMOS Emerging Technologies workshop 2010, 2013/7/18, Whistler, Canada.
T. Tokuda, T. Noda, K. Sasagawa, and J. Ohta, "Optoelectronics Devices for Biomedical Applications," The 10th Conference of Lasers and Electro-Optics Pacific Rim (CLEO-PR 2013), 2013/07/02, Kyoto, Japan
T. Tokuda, "Design of CMOS image sensor and related surface-sensing sensors with standard CMOS technology (Tutorial)," The 26th International Conference on Microelectronic Test Structures (ICMTS2013), 2013/03/25, Osaka University Nakanoshima Center, Japan.
[Keynote] T. Tokuda "Microelectronics-based Implantable Devices for Bio-Medical Applications", IEEE Asia-Pacific Conference on Postgraduate Research in Microelectronics (PrimeAsia 2012), 2012/12/6, Hyderabd, India.
T. Tokuda, Panelist in "Retinal Prosthesis Challenge", International Conference on Neuroprosthetic Devices (ICNPD)-2012, 2012/11/20, Freiburg, Germany.
T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, " Flexible Retinal Prosthesis Device with CMOS Micorochip Flexible Retinal Prosthesis Device with CMOS Micorochip," CMOS-Emerging Technology 2012, 2012/7/18, Vancouver, Canada.
K. Sasagawa, T. Kobayashi, T. Noda, T. Tokuda, Y. Hatanaka, H. Tamura, S. Shiosaka, J. Ohta, "Implantable CMOS sensor for in-vivo brain imaging of freely moving mouse," CMOS Emerging Technologies 2011, Jun. 15, 2011, Hilton Resort & Spa, Whistler CANADA
T. Tokuda, J. Ohta, K. Kakiuchi, "Polarization-analyzing CMOS image sensors with monolithically embedded wire grid structure," CMOS Emerging Technologies workshop 2010, 2010/5/21, Whistler, Canada.
T. Tokuda, and J. Ohta, "CMOS Based Retinal Prosthesis Technology," The 16th International Display Workshops (IDW'09), 2009/12/11, Miyazaki, Japan
T. Tokuda, "CMOS-based implantable bioelectronics - retinal prosthesis and in vivo brain imaging," Biotronics2009, 2009/10/7, Soule National Univ., Korea.
T. Tokuda, "CMOS technology-based in vivo biomedical photonic devices," EDIS 2008 satellite symposium "Advances in Neuroengineering", 2008/1/23, Osaka, Japan.
T. Tokuda, M. Nunoshita, J. Ohta, “SiGe/Si "Micro-origami" epitaxial MEMS device on SOI substrate,” 3rd International SiGe(C) Technology and Device Meeting (ISTDM2006), 2006/5/17, Princeton, NJ.
T. Tokuda, K. Kagawa, A. Uehara, Y. Terasawa, K. Nakauchi, T. Fujikado, Y. Tano, and J. Ohta, "A large scale electrode array of microchip-based stimulator for suprachoroidal transretinal stimulation," The 2nd Shanghai International Conference On Physiological Biophysics - audition & vision (SICPB'06) 2006/11/5, Shanghai, China.
国際会議一般講演 / Contributed
2020
Kenji Sugie, Kiyotaka Sasagawa, Mark Guinto, Makito Haruta, Takashi Tokuda, Jun Ohta, "Image refocusing of miniature CMOS image sensor with angle-selective pixels Author block," The OSA Biophotonics Congress 2020, 2020.4.23.[Virtual]
2019
Yasuto Mori, ChiaChi Chang, Hiroki Endo, maho Hata, Kenzo Shodo, Yasuo Terasawa, Toshihiko Nd, Takashi Tokuda, Kiyotaka Sasagawa, Jun Ohta, "Design of Low-Power Circuit Architecture for Miniaturized Retinal Prosthesis Device,"
Pakpuwadon Thanet, Wuthibenjaphonchai Nattakarn, Makito Haruta, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, "A battery-less, ultra-small wireless optical stimulator," Neuroscience 2019 , 2019.10.23. McCormick Place in Chicago,USA .
Wuthibenjaphonchai Nattakarn, Makito Haruta, Kiyotaka Sasagawa, Takashi Tokuda, Carrara Sandro, Jun Ohta, "Proposal of an Optically-Operated, Sticker-Like DevicePlatform for Health Monitoring," The 41st International Engineering in Medicine and Biology Conference(EMBC2019), 2019.7.26. City Cube, Berlin ,Germany.
Erus Rustami, Kiyotaka Sasagawa, Yasumi Ohta, Makito Haruta, Toshihiko Noda, Takashi Tokuda, Jun Ohta, "Band-Pass Emission Filter Combined with Fiber Coupled Laser for High-Performance ImplantableFluorescent Imager," 10th International Conference on Molecular Electronics & BioElectronics, 2019.6.27. Nara Kasugano International Forum IRAKA, Nara, Japan.
Erus Rustami, Kiyotaka Sasagawa, Yasumi Ohta, Makito Haruta, Toshihiko Noda, Takashi Tokuda, Jun Ohta, "A Thin Composite Emission Filter and Fiber Coupled Laser Excitation for Implantable Fluorescence Imager Application," The IEEE International Symposium on Circuits and Systems (ISCAS), 2019.5.27. Sapporo Convention Center, Sapporo, Japan
Nattakarn Wuthibenjaphonchai, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, "Wireless attachable health monitoring device operated by optical power," The Second International Workshop by the 174th Committee JSPS, 2019.1.29. Medium Conference room, Kyoto Terrsa.
Yasuto Mori, Chia-Chi Chang, Hiroki Endo, Maho Hata, Toshihiko Noda, Kenzo Shodo, Yasuo Terasawa, Makito Haruta, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, "CMOS Power Transfer Circuit Design for Retinal Prosthetic Device Based on Multiunit Architecture," The 7th International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS & Applications 2018/2019Bio4Apps 2018/2019, 2019.1.7. Harbin Institute of Technology, China.
2018
Erus Rustami, Kiyotaka Sasagawa, Yasumi Ohta, Makito Haruta, Toshihiko Noda, Takashi Tokuda, Jun Ohta , "Implantable CMOS Image Sensor using Multilayer Filter Emission and Fiber Coupled Laser Excitation," 4th International Workshop on Image Sensors and Imaging Systems (IWISS2018), 2018.11.29. Tokyo Institute of Technology, Tokyo.
Yoshinori SunagaYasumi Ohta, Makito HarutaToshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Y. Akay, M. Akay, Jun Ohta, "GCaMP and GFP imaging in VTA by an implantable imaging device," NEUROSCIENCE 2018, 2018.11.7. San Diego Convention Center, San Diego, USA.
Mark Christian Guinto, Yasumi Ohta, Mamiko Kawahara, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, "Visualizing neural activity at the regions of the GCaMP6-expressing mouse brain in the neural circuit related to feeding behavior,including lateral hypothalamus,under freely moving using an implantable micro-imaging device," NEUROSCIENCE 2018, 2018.11.7. San Diego Convention Center, San Diego, USA.
Ayaka Kimura, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, "Long-term time-lapse observation of cells with photo-stimulation by using portable in vitro cell imaging system," NEUROSCIENCE 2018, 2018.11.7. San Diego Convention Center, San Diego, USA.
Makito Haruta, Yuki Kurauchi, Ayaka Kimura, Yasumi Ohta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Hiroshi Katsuki, Jun Ohta, "A chronic blood-flow imaging device for a small animal's brain in a behavior experiment," NEUROSCIENCE 2018, 2018.11.5. San Diego Convention Center, San Diego, USA.
Yasumi Ohta, Kyosuke Naganuma, Mamiko Kawahara, Ayaka Kimura, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, "Development of micro LED-based optical stimulation device combined with microdialysis for detecting the release of neurotransmitters," NEUROSCIENCE 2018, 2018.11.4. San Diego Convention Center, San Diego, USA.
Kiyotaka Sasagawa, Yasumi Ohta, Makito Haruta, Toshihiko Noda, Takashi Tokuda, Jun Ohta, "Composite Bandpass Emission Filter for Lensless Fluorescence Imaging," IEEE Life Sciences Conference (LSC2018), 2018.10.29. La Plaza - Banquet & Conference halls, Montreal, Quebec, Canada.
Kiyotaka Sasagawa, Yasumi Ohta, Makito Haruta, Toshihiko Noda, Takashi Tokuda, Jun Ohta, "Excitation and Emission Filters for Implantable Fluorescence Imaging Devices by Laser Lift-Off Process," BioCAS 2018, 2018.10.18. The Cleveland Marriott Downtown at Key Center in Cleveland, Ohio, USA.
Kiyotaka Sasagawa, Narihito Ikeda, Makito Haruta, Hironari Takehara, Toshihiko Noda, Takashi Tokuda and Jun Ohta, "A Lens-free Imaging Device with a Hybrid Emission Filter for Fluorescent Microchamber Counting," the 40th International Engineering in Medicine and Biology Conference（EMBC'18）, 2018.7.18. Hawaii Convention Center, Honolulu, USA.
T. Tokuda, T. Pakupuwadon, N. Wuthibenjaphonichai, M Haruta, T. Noda, K. Sasagawa, J. Ohta, and M. Sawan, “CMOS-based, optically-powered implantable optogenetic stimulator,” IEEE Life Science Conference 2018, 2018/10/28-30, Montreal, Canada
N. Wuthibenjaphonichai, M Haruta, T. Noda, K. Sasagawa, T. Tokuda, M. Sawan, S. Carrara, and J. Ohta, “Battery-Free Sticker-Like Device for Health Monitoring Operated by Optical Power Transfer,” 2018 IEEE Biomedical Circuits and Systems Conference (BioCAS2018), 2018.10.18. The Cleveland Marriott Downtown at Key Center in Cleveland, Ohio, USA.
H. Sumi, T. Takehara, S. Miyazaki, D. Shirahige, K. Sasagawa, T. Tokuda, Y. Watanabe, N. Kishi, J. Ohta, M. Ishikawa, "Next-Generation Fundus Camera with Full Color Image Acquisition in 0-lx Visible Light by 1.12-μm Square Pixel, 4K, 30-fps BSI CMOS Image Sensor with Advanced NIR Multi-Spectral Imaging System" 2018 Symposia on VLSI Technology and Circuit, 2018/6/18(Live Demonstration), 2018/6/21(講演), Hilton Hawaiian Village, Honolulu, HI, USA
[Live Demonstration] T. Tokuda, W. Nattakarn, T. Ishizu, M. Haruta, T. Noda, K. Sasagawa, and J. Ohta, “Live Demonstration: IoT Micronode with Optical ID Transmission Capability Operated by Optical Energy Harvesting,” A2P-O, IEEE International Symposium on Circuit and Systems, 2018/5/27, Florence, Itary.
T. Pakpuwadon, W. Nattakarn, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, M. Sawan, J. Ohta, "CMOS-integrated optical power transfer for an ultra-small wireless implantable devices," International Conference on Solid State Devides and Materials (SSDM2018), J-5-03, 2018/9/12, The University of Tokyo, Tokyo, Japan.
W.S. Hee, K. Nakamoto, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, J. Ohta, "Small and Compact In-vivo FRET Image Sensor Fabrication and Development using CMOS Technology," International Conference on Solid State Devides and Materi
2017
als (SSDM2018), J-5-04, 2018/9/12, The University of Tokyo, Tokyo, Japan.
Y. Sunaga, A. Shiraishi, T. Yamaguchi, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, Y. Yoshimura, and J. Ohta, "GCaMP imaging associated with visual stimulation by implantable imaging device," Neuroscience 2017 (SfN2017), 809.17/VV59, 2017/11/15, Washington DC, USA
Y. Ohta, M. Kawahara, Y. Sunaga, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Visualizing neural activities under stress and protease activities in mouse brain using implantable imaging device," Neuroscience 2017 (SfN2017), 809.15/VV57, 2017/11/15, Washington DC, USA
A. Kimura, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Long-term time-lapse observation by using portable In vitro cell imaging system ," Neuroscience 2017 (SfN2017), 809.16/VV58, 2017/11/15, Washington DC, USA
T. Noda, S. Nishimura, Y. Nakano, Y. Terasawa, M. Haruta, K. Sasagawa, T. Tokuda, and J. Ohta, "Fabrication and in Vivo Demonstration of Microchip-Embedded Smart Electrode Device for Neural Stimulation in Retinal Prosthesis," IEEE Biomedical Circuits and Systems Conference 2017 (BioCAS2017), C4L-A-3, 2017/10/21, Turino, Itary.
K. Sasagawa, M. Haruta, K. Fujimoto, Y. Ohta, T. Noda, T. Tokuda, and J. Ohta,"Fluorescence Imaging Device with an Ultra-Thin Micro-LED," IEEE Biomedical Circuits and Systems Conference 2017 (BioCAS2017), C2P-D-5, 2017/10/21, Turino, Itary.
K. Sasagawa, M. Haruta, T. Yamaguchi, K. Fujimoto, Yoshinori Sunaga, Y. Ohta, T. Noda, T. Tokuda, and J. Ohta, "Implantable optoelectronic devices for measurement and control of neural functions," The 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC’17), July 2017, Jeju, Korea.
M. Kuwabara, H. Tashiro, Y. Terasawa, Y. Nakano, T. Noda, T. Tokuda, J. Ohta, "Analysis of the Porous Stimulation Electrode Characteristic Using Electrochemical Impedance Spectroscopy in Visual Prostheses," The 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC’17), July 2017, Jeju, Korea.
N. Wuthibenjaphonchai, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "CMOS-based optical energy harvesting circuit for medical and iot devices," The 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC’17), July 2017, Jeju, Korea.
H. Hayami, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Implantable multi-area imaging device with an optical data transmitter for brain function measurement," The 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC’17), July 2017, Jeju, Korea.
K. Sasagawa, K. Fujimoto, T. Yamaguchi, M. Haruta, Y. Ohta, T. Noda, T. Tokuda, J. Ohta, "An ultra-thin LED light source with excitation filters for an implantable imaging devices," 9th International Conference on Molecular Electronics and bioelectronics（M&BE9）, June 2017, Kanazawa, Japan
K. Sasagawa, M. Haruta, T. Yamaguchi, Y. Ohta, T. Noda, T. Tokuda, J. Ohta, "A miniature imaging device using a self-reset image sensor for hemodynamic imaging," 2017 International Image Sensor Workshop (IISW), May 2017, Hiroshima, Japan.
2016
M. Haruta, A. Wuthayavanich, K. Osawa, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "A portable cell imaging system with dual imaging functionality," International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS and Applications 2016 (Bio4Apps 2016), 2016/12/14, Griffith University Gold Coast Campus, Australlia.
T. Yamaguchi, Y. Sunaga, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, and J. Outa, "A packaging method for an implantable brain-machine interface device with a thin film substrate," International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS and Applications 2016 (Bio4Apps 2016), 2016/12/14, Griffith University Gold Coast Campus, Australlia.
Y. Sunaga, M. Haruta, T. Yamaguchi, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Highly sensitive implantable imaging device for flavoprotein fluorescence imaging," Neuroscience 2016 (SfN2016), 270.14 / LLL2, 2016/11/13, San Diego, USA.
T. Noda, Hiroaki Takehara, K. Sasagawa, T. Tokuda, and J. Ohta, "Neural Stimulators for Retinal Prosthesis Embedded with CMOS Microchips," IEEE 59th International Midwest Symposium on Circuits and Systems (MWSCAS2016), 2016/10/17, Hotel Fairmont Bab Al Bahr, Abu Dhabi, United Arab Emirates.
K. Sasagawa, T. Yamaguchi, M. Haruta, Y. Ohta, Hiroaki Takehara, T. Noda, T. Tokuda, and J, Ohta, "Hemodynamic Imaging Using an Implantable Self-Reset Image Sensor," The 12th IEEE Biomedical Circuits and Systems Conference (BioCAS2016), 1016/10/19, Hotel Pullman Shanghai Skyway, Shanghai, China.
Hironari Takehara, Y. Nakamoto, K. Sasagawa, H. Takehara, T. Noda, T. Tokuda, and J. Ohta, "Compact Lensless Digital Counting System for Fluorescent Micro-Reaction-Chamber Array," The 12th IEEE Biomedical Circuits and Systems Conference (BioCAS2016), 1016/10/19, Hotel Pullman Shanghai Skyway, Shanghai, China.
Y. Sunaga, M. Haruta, T. Yamaguchi, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Highly sensitive implantable imaging device for flavoprotein fluorescence imaging," Neuroscience 2016, 2016/11/13, San Diego Convention Center, CA, USA.
K. Sasagawa, T. Yamaguchi, M. Haruta, Y. Sunaga, Y. Ohta, Hironari Takehara, Hiroaki Takehara, T. Noda, T. Tokuda, and J Ohta, "An Implantable Needle Shape Image Sensor with an On-Chip Thinned LED," International Conference on Solid State Devides and Materials(SSDM2016), 2016/9/28, Tsukuba International Congress Center, Tsukuba, Japan.
Hiroaki Takehara, K. Osawa, Hironari Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "An On-Chip Fluorescence Imaging System Using a Compact CMOS Image Sensor," 2016 International Conference on Solid State Devides and Materials(SSDM2016), 2016/9/26, Tsukuba International Congress Center, Tsukuba, Japan.
Hiroaki Takehara, Y. Katsuragi, H. Hayami, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Implantable medical LSI-chips integrated with flexible and biocompatible hydrogel optical fibers," The International Conference on Flexible and Printed Electronics (ICFPE 2016), 2016/9/7, Yamagata University, Yamagata, Japan.
N. Wuthibenjaphonchai, Hironari Takehara, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "CMOS-based Implantable Glucose Sensor," Korea-Japan Joint Forum (KJF) International Conference on Organic Materials for Electronics and Photonics 2016 (KJF-ICOMEP 2016) 2016/9/5, ACROS Fukuoka, Fukuoka, Japan.
J. Ohta, H. Takehara, K. Sasagawa, H. Takehara, T. Noda, and T. Tokuda, "On-chip fluorescence detection system with high density micro chamber array based on CMOS image sensor," IEEE International symposium on circuits and systems (CASFEST 2016), 2016/5/26, Polytechnique Montreal, Montreal, Canada.
T. Tokuda, H. Takehara, T. Noda, K. Sasagawa,T. Okitsu, S. Takeuchi, and J. Ohta, "Fluorescence-based Implantable Glucose Sensor using CMOS image sensor technology," Asia-Pacific Conference of Transducers and Micro-Nano Technology 2016 (APCOT2016), 2016/6/27, Kanazawa Bunka Hall Kanazawa, Japan.
T. Tokuda, Hiroaki Takehara, T. Noda, K. Sasagawa, and J. Ohta, "CMOS-Based Opto-Electronic Flexible Brain Interface Device," CMOS Emerging Technologies, 2016/5/27, Montreal, Canada.
Hiroaki Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J, Ohta, "Implantable microdevices based on semiconductor technology for optical cell analysis in vivo," The 11th Annual IEEE International Conference on Nano/Micro Engineered and Molecular Systems (IEEE-NEMS 2016), 2016/4/18, A3L-A, Hotel Matsushima Taikanso.
T. Tokuda, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Okitsu, S. Takeuchi, and J. Ohta, "Fluorescence-based Implantable Glucose Sensor using CMOS image sensor technology," Asia-Pacific Conference of Transducers and Micro-Nano Technology (APCOT) 2016, 2016/6/26-29, Kanazawa, Japan.
2015
Y. Ohta, M. Motoyama, M. Haruta, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, " Visualizing neuronal activities of the deep brain in a freely-moving mouse by using implantable micro imaging devices," Society for Neuroscience 2015, 2015/10/18, Chicago, USA
K. Sasagawa, T. Yamaguchi, M. Haruta, Y. Sunaga, Hironari Takehara, M. Motoyama, Y. Ohta, Hiroaki Takehara, T. Noda, T. Tokuda, and J. Ohta, "Image processing technique for an implantable image sensor with self-resetting function," Society for Neuroscience 2015, 2015/10/18, Chicago, USA
Y. Sunaga, H. Yamaura, M. Hauta, T. Yamaguchi, M. Motoyama, Y. Ohta, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Tokuda, Y. Yoshimura, and J. Ohta, "Improvement of green fluorescence imaging system based on implantable CMOS imaging device for freely moving mice," Society for Neuroscience 2015, 2015/10/21, Chicago, USA
M. Haruta, Y. Sunaga, T. Yamaguchi, Hironari Takehara, Y. Ohta, M. Motoyama, Hiroaki Takehara, T. Noda, T. Tokuda, and J. Ohta, "An implantable hemodynamic imaging device for revealing relation between a blood flow and brain activity in animal behavior," Society for Neuroscience 2015, 2015/10/21, Chicago, USA
T. Tokuda, H. Takehara, T. Noda, K. Sasagawa, and J. Ohta, "CMOS-Based on-Chip Neural Interface Devices for Optogenetics," IEEE Biomedical Circuits and Systems Conference 2015 (BioCAS 2015), Paper ID 1070, Oct. 23, 2015, Atlanta, USA
Hironari Takehara, M. Nagasaki, K. Sasagawa, Hiroaki Takehara, T. Noda, T. Tokuda, H. Noji, and J. Ohta, "High coupling efficiency contact imaging system having micro light pipe array for a digital enzymeLINKed immunosorbent assay," IEEE Biomedical Circuits and Systems Conference 2015 (BioCAS 2015), Paper ID 1129, Oct. 24, 2015, Atlanta, USA
K. Sasagawa, T. Yamaguchi, M. Haruta, Y. Sunaga, Hironari Takehara, M. Motoyama, Y. Ohta, Hiroaki Takehara, T. Noda, T. Tokuda, and J. Ohta, "Image processing technique for an implantable image sensor with self-resetting function," Neuroscience 2015, 2015/10/18, Chicago, IL, USA
Y. Sunaga, H. Yamaura, M. Haruta, T. Yamaguchi, M. Motoyama, J. Ohta, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, Y. Yoshimura, and J. Ohta, "Flavoprotein Fluorescence Imaging System Based on Implantable CMOS Imaging Device for Freely Moving Mice," Neuroscience 2015, 2015/10/21, Chicago, IL, USA
M. Haruta, Y. Sunaga, T. Yamaguchi, Hironari Takehara, Y. Ohta, M. Motoyama, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "An implantable hemodynamic imaging device for revealing relation between a blood flow and brain activity in animal behavior," Neuroscience 2015, 2015/10/21, Chicago, IL, USA
T. Kawamura, T. Hirai, Hironari Takehara, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Tokuda, Teru Okitsu, S. Takeuchi, and J. Ohta, "CMOS-Based Implantable Glucose Monitoring Device with Glucose-Responsive Fluorescent Hydrogel," The 99th OSA Annual Meeting, 2015/10/19, San Jose, CA, USA
T. Yamaguchi, Y. Sunaga, M. Haruta, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Improvement of Power Consumption and SNR of Self-reset Pixels for an Implantable CMOS Image Sensor," International Conference on Solid State Devices and Materials (SSDM2015), 2015/9/28, Sapporo, Japan.
H. Hayami, K. Nagata, M. Haruta, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Wireless Data Transmission in a Brain Tissue with Intra-Body Communication by a Micro-Sized Image Sensor," International Conference on Solid State Devices and Materials (SSDM2015), 2015/9/28, Sapporo, Japan.
Hironari Takehara, M. Nagasaki, K. Sasagawa, H. Takehara, T. Noda, T. Tokuda, H. Noji, and J. Ohta, "A micro light pipe array with an excitation attenuation filter for lensless digital enzyme-LINKed immunosorbent assay," Eighth International Conference on Molecular Electronics and Bioelectronics (M&BE8), D-O06, 2015/06/23, Tower Hall Funabori, Tokyo, Japan
Hironari Takehara, M. Nagasaki, K. Sasagawa, H. Takehara, T. Noda, T. Tokuda, H. Noji, and J. Ohta, "A micro light pipe array with an excitation attenuation filter for lensless digital enzyme-LINKed immunosorbent assay," Eighth International Conference on Molecular Electronics and Bioelectronics (M&BE8), D-O06, 2015/06/23, Tower Hall Funabori, Tokyo, Japan
Y. Sunaga, H. Yamaura, M. Haruta, T. Yamaguchi, M. Motoyama, Y. Ohta, Hiroaki Takehara, T. Noda, K. Sasagawa, T. Tokuda, Y. Yoshimura and J. Ohta, "Implantable Imaging Device for Brain Functional Imaging System using Flavoprotein Fluorescence," Eighth International Conference on Molecular Electronics and Bioelectronics (M&BE8), D-P29, 2015/06/22, Tower Hall Funabori, Tokyo, Japan
Hiroaki Takehara, M. Haruta, Y. Ohta, M. Motoyama, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Implantable semiconductor imaging devices for in vivo optical imaging of brain," The Optics in the Life Sciences Congress (Optics and the Brain), 2015/04/15, Pinnacle Vancouver Harbourfront Hotel, Canada.
2014
T. Fujisawa, T. Noda, Y. Terasawa, H. Takehara, K. Sasagawa, T. Tokuda, and J. Ohta, "Development of a smart electrode device with built-in CMOS chips for retinal prothesis," International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS and Applications 2014 (Bio4Apps 2014), PBS-3, 2014/11/18, Shanghai, China
K. Sasagawa, T. Yamaguchi, M. Haruta, Y. Sunaga, Hironari Takehara, T. Noda, T. Tokuda, and J. Ohta, "An Implantable Image Sensor with Self-Reset Function for Brain Imaging," IEEE Biomedical Circuits and Systems Conference (BioCAS 2014), 2014/10/23, SwissTech Convention Center, Lausanne, Switzerland
Y. Sunaga, M. Haruta, T. Yamaguchi, M. Motoyama, Y. Ohta, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, J. Ohta, "An Implantable Green Fluorescence Imaging Device Using Absorption Filters with High Excitation Light Rejection Ratio," Biomedical Circuits and Systems Conference (BioCAS 2014), 1160, Oct. 23, 2014, SwissTech Convention Center, Lausanne, Switzerland
M. Haruta, S. Nakajima, N. Kamiyama, H. Takehara, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, J.a Ohta, "An implantable optogenetics device based on CMOS integrated circuit technology for a freely moving animal," (poster), Neuroscience2014, TT83 271.08, Nov. 16, 2014, the Walter E. Washington Convention Center、Washington DC, USA
T. Tokuda, M. Takahashi, Keita Masuda, T. Kawamura, Y. Ohta, M. Motoyama, T. Noda, K. Sasagawa, T. Okitsu, S. Takeuchi, J. Ohta, "CMOS-BASED IMPLANTABLE GLUCOSE SENSOR USING GLUCOSE-RESPONSIVE FLUORESCENT HYDROGEL," (poster), International Conference on Miniaturized Systems for Chemistry and Life Sciences (MicroTAS 2014), M.551g, Oct. 27, 2014, Henry B. Gonzalez Convention Center, San Antonio, TX, USA
K. Sasagawa, S. H. Kim, L. Yamauchi, Kazuki Kitaguchi, H. Takehara, T. Noda, T. Tokuda, R. Iino, Hitoyuki Noji, J. Ohta, "SINGLE-MOLECULE ENZYME ASSAY WITH A LENSLESS FLOUORESTCENT IMAGING DEVICE," (poster), International Conference on Miniaturized Systems for Chemistry and Life Sciences (MicroTAS 2014), W.650g, Oct. 29, 2014, Henry B. Gonzalez Convention Center, San Antonio, TX, USA
T. Noda, T. Fujisawa, K. Sasagawa, T. Tokuda, H. Takehara, Y. Terasawa, H. Tashiro, H. Kanda, T. Fujikado, J. Ohta, "Fabrication of a smart electrode array with built-in CMOS microchips for STS retinal prosthesis," (poster), The 8th Biennial World Congress on the Relationship between Neurobiology and Nano-Electronics Focusing on Artificial Vision (The Eye & the Chip), Sep. 29, 2014, The Henry, Autograph Collection Hotel, Michigan, USA
M. Haruta, Y. Sunaga, T. Yamaguchi, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, J. Ohta, "A multi-modal implantable CMOS imaging device with two-color light source for intrinsic signal detection in a brain," International Conference on Solid State Devices and Materials (SSDM), D-7-3, Sep. 11, 2014, Tsukuba International Congress Center
H. Hayami, K. Sasagawa, H. Takehara, T. Noda, T. Tokuda, J. Ohta, "An Implantable Subminiature PWM Image Sensor Based on Body Channel Communication," International Conference on Solid State Devices and Materials (SSDM), D-7-1, Sep. 11, 2014, Tsukuba International Congress Center
T. Kawamura, M. Takahashi, Keita Masuda, T. Noda, K. Sasagawa, T. Tokuda, T. Okitsu, S. Takeuchi, J. Ohta, "A Miniaturized Implantable Glucose Sensor Based on CMOS Line Sensor Using Glucose-Responsive Fluorescent Hydrogel," International Conference on Solid State Devices and Materials (SSDM), D-3-3, Sep. 10, 2014, Tsukuba International Congress Center
T. Yamaguchi, Y. Sunaga, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, J. Ohta, "Noise Performance of an Implantable Self-reset CMOS Image Sensor," (poster), The 2014 International Meeting for Future of Electron Devices, Kansai （IMFEDK2014), PC-03, J.. 19, 2014, Ryukoku University Avanti Kyoto Hall, Kyoto, JAPAN
H. Hayami, Yoshiaki Ishii, K. Sasagawa, T. Noda, T. Tokuda, J. Ohta, "Body Channel Digital Pulse Transmission for Biometric Measurement by Fully Implantable CMOS Image Sensor," The 2014 International Meeting for Future of Electron Devices, Kansai （IMFEDK2014), A-2, J.. 19, 2014, Ryukoku University Avanti Kyoto Hall, Kyoto, JAPAN
H. Tashiro, Y. Terasawa, Y. Nakano, K. Osawa, M. Ozawa, T. Noda, T. Tokuda, J. Ohta, T. Fujikado, "Safety Assessment of Chronic Suprachoroidal-Transretinal Stimulation in Normal Rabbits by the Femtosecond Laser-induced Porous Electrodes," Association for Research in Vision and Ophthalmology （ARVO 2014）, May 5, 2014, Orlando, FL USA
Y. Terasawa, H. Tashiro, Y. Nakano, K. Osawa, M. Ozawa, T. Noda, T. Tokuda, J. Ohta, T. Fujikado, "Charge Injection Capacities of Femtosecond Laser-induced Porous Electrodes measured in vitro and in vivo: Comparison between porous and smooth electrodes," Association for Research in Vision and Ophthalmology （ARVO 2014）, May 5, 2014, Orlando, FL USA
K. Sasagawa, Y. Ohta, M. Motoyama, T. Noda, T. Tokuda, J. Ohta, S. Shiosaka, "An Implantable Micro Imaging Device for Molecular Imaging in a Brain of Freely-Moving Mouse," IEEE International Symposium on Bioelectronics and Bioinformatics (IEEE ISBB 2014), S1.4, Apr. 12, 2014, Chung Yuan Christian University, TAIWAN
T. Noda, H. Takehara, K. Sasagawa, T. Tokuda, C.-Y. (Peter) Wu, J. Ohta, "Fabrication of high performance electrodes for retinal prosthesis," Taiwan-Japan Workshop on "Bioelectronics" and "Biophotonics" 2014, P-7, Apr. 8, 2014, The University of Tokyo, JAPAN
K. Sasagawa, H. Takehara, K. Miyazawa, S. H. Kim, T. Noda, T. Tokuda, R. Iino, H. Noji, J. Ohta, "Dual-mode lensless imaging device for digital enzyme LINKed immunosorbent assay," Photonics West, [8933-22], Feb. 2, 2014, The Moscone Center San Francisco, California, United States
Y. Sunaga, M. Haruta, H. Takehara, M. Motoyama, Y. Ohta, T. Noda, K. Sasagawa, T. Tokuda, J. Ohta, "Implantable CMOS imaging device with absorption filters for green fluorescence imaging," Photonics West, [8928-20], Feb. 2, 2014, The Moscone Center San Francisco, California, United States
2013
M. Haruta, C. Kitsumoto, Y. Sunaga, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, and Jun Ohta, "Implantable device for intrinsic signals imaging in cortices of freely moving rats," Neuroscience 2013 (SfN2013), MMM11 871.15, 2013/11/13, San Diego, USA.
T. Tokuda, S. Nakajima, Y. Maezawa, T. Noda, K. Sasagawa, and J. Ohta, "Device Packaging of CMOS-Based Optoelectronic Neural Interface Device for in Vitro and in vivo Optogenetics," 6th International IEEE EMBS Conference on Neural Engineering (NER2013), FrDT8.3, 2013/11/8, San Diego, USA.
M. Haruta, C. Kitsumoto, Y. Sunaga, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Functional brain imaging under freely moving experiments by an implantable CMOS imaging device," Asian Symposium on Advanced Image Sensors and Imaging Systems, 2013/10/08, Shizuoka, Japan.
K. Sasagawa, S. H. Kim, K. Miyazawa, H. Takehara, T. Noda, T. Tokuda, R. Iino, H. Noji, and J. Ohta, "Lensless CMOS-based Imaging Device for Fluorescent Femtoliter Droplet Array Counting," International Conference on Miniaturized Systems for Chemistry and Life Sciences (MicroTAS 2013), W.070c, 2013/10/30, Freiburg, Germany.
T. Tokuda, M. Haruta, Y. Ohta, M. Motoyama, T. Noda, K. Sasagawa, Y. Ishikawa, S. Shiosaka, and J. Ohta, "CMOS-Based Implantable Brain Imaging Technology," 2013 International Conferences on Active Media Technology / Brain and Health Informatics (AMT-BHI 2013, SB7203, 2013/10/30, Maebashi, Japan.
T. Tokuda, S. Nakajima, Y. Maezawa, T. Noda, K. Sasagawa, and J. Ohta, "CMOS-based Neural Interface Device with Integrated Micro Light Source Array for Optogenetics," International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS and Applications 2013 (Bio4Apps 2013) & 5th Sensing Biology Symposium, O-2F-6, 2013/10/31, Tokyo, Japan.
T. Noda, K. Sasagawa, T. Tokuda, Y. Terasawa, H. Tashiro, H. Kanda, T. Fujikado, and J. Ohta, "Intelligent Retinal Prosthetic Device Employs Smart Electrode Array Integrated with CMOS Microchips," International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS and Applications 2013 (Bio4Apps 2013) & 5th Sensing Biology Symposium, O-1C-5, 2013/10/30, Tokyo, Japan.
M. Haruta, Y. Sunaga, T. Yamaguchi, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "Development of an Implantable Imaging Device for Observation of Intrinsic Signals in the Brain," International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS and Applications 2013 (Bio4Apps 2013) & 5th Sensing Biology Symposium, PM-3, 2013/10/30, Tokyo, Japan.
N. Wakama, K. Uejima, K. Terao, T. Noda, K. Sasagawa, T. Tokuda, Y. Nishiyama, K. Kakiuchi, and J. Ohta, "Application Demonstaration of Polarization-Analyzing CMOS Image Sensor for Micro-Chemical Systems,"International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS and Applications 2013 (Bio4Apps 2013) & 5th Sensing Biology Symposium, PE-2, 2013/10/30, Tokyo, Japan.
T. Kawamura, M. Takahashi, K. Uejima, Y. Ohta, M. Motoyama, T. Noda, K. Sasagawa, T. Tokuda, T. Okitsu, S. Takeuchi, and J. Ohta, "Development of a CMOS-Based Implantable Glucose Monitoring Device Using Glucose-Sensitive Fluorescent Hydrogel," International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS and Applications 2013 (Bio4Apps 2013) & 5th Sensing Biology Symposium, PS-1, 2013/10/30, Tokyo, Japan.
H. Takehara, K. Miyazawa, T. Noda, K. Sasagawa, T. Tokuda, S. H. Kim, R. Iino, H. Noji, and J. Ohta, "A CMOS Image Sensor Having Stacked Photodiodes for Fluorescencet Observation of Digital Enzyme-LINKed Immunosorbent Assay (ELISA)," International Conference on BioSensors, BioElectronics, BioMedical Devices, BioMEMS/NEMS and Applications 2013 (Bio4Apps 2013) & 5th Sensing Biology Symposium, PNM-4, 2013/10/30, Tokyo, Japan.
M. Haruta, C. Kitsumoto, Y. Sunaga, H. Takehara, T. Noda, K. Sasagawa, T. Tokuda and J. Ohta, "An implantable CMOS device for functional brain imaging under freely moving experiments of rats," 2013 International Conference on Solid State Devices and Materials, G-1-5, 2013/09/25, Fukuoka, Japan
H. Takehara, K. Miyazawa, T. Noda, K. Sasagawa, T. Tokuda, S.H. Kim, R. Iino, H. Noji, and J. Ohta, "A CMOS Image Sensor Having Stacked Photodiodes for Lensless Observation System of Digital Enzyme-LINKed Immunosorbent Assay (ELISA)," 2013 International Conference on Solid State Devices and Materials, G-4-4, 2013/09/26, Fukuoka, Japan
T. Tokuda, S. Nakajima, Y Maezawa, T. Noda, K. Sasagawa, Y. Ishikawa, S. Shiosaka, and J. Ohta, "An in vitro demonstration of CMOS-based optoelectronic neural interface device for optogenetics," 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society（EMBC2013）, ThB13.14, 2013/07/04, Osaka, Japan.
K. Sasagawa, Y. Ishii, S. Yokota, T. Matsuda, P. Davis, B. Zhang, K. Li, T. Noda, T. Tokuda, and J. Ohta, "Implantable Image Sensor Based on Intra-Brain Image Transmission," 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society（EMBC2013）, ThD07.2, 2013/07/04, Osaka, Japan.
T. Tokuda, N. Wakama, T. Noda, K. Sasagawa, K. Kakiuchi, and J. Ohta, "Application demonstration of polarization-analyzing CMOS image sensor and performance improvement using 65 nm standard CMOS process," 2013 International Image Sensor Workshop（IISW2013）2013/06/04, Snowbird Resort, Utah, USA
N. Wakama, D. Okabayashi, T. Noda, K. Sasagawa, T. Tokuda, K. Kakiuchi, and J. Ohta, "A polarization-analyzing CMOS image sensor with metal wire grid in 65-nm standard CMOS technology for in-situ chiral analysis," Seventh Internatiional Conference on Molecular Electronics and Bioelectronics (M&BE7), 2013/3/19, Fukuoka, Japan
M. Haruta, C. Kitsumoto, Y. Sunaga, T. Noda, K. Sasagawa, T. Tokuda and J. Ohta, "Intrinsic optical signal imaging with a bio medical photonic LSI," Seventh Internatiional Conference on Molecular Electronics and Bioelectronics (M&BE7), 2013/3/19, Fukuoka, Japan
2012
T. Tokuda, T. Miyatani, Y. Sawadsaringkarn, T. Kobayashi, T. Noda, K. Sasagawa and J. Ohta, "A CMOS on-chip Image Sensor with Integrated LED Array for Optogenetics," 2012 International Conference on Solid State Devices and Materials (SSDM2012), PS-11-13, Sep. 26, 2012, Kyoto International Conference Center, Kyoto, Japan
M. Haruta, T. Kobayashi, C. Kitsumoto, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "A CMOS-Based Implantable Imaging Device for Wide-Area Brain Functional Imaging," 2012 International Conference on Solid State Devices and Materials (SSDM2012), J-2-3, Sep. 25, 2012, Kyoto International Conference Center, Kyoto, Japan
N. Wakama, N. Tachikawa, K. Terao, M. Shibata, T. Noda, K. Sasagawa, T. Tokuda, K. Kakiuchi and J. Ohta, "Real-time Multifunctional Optical Analyzer Based on Polarization-analyzing CMOS Image Sensor for Microchemical Systems," 2012 International Conference on Solid State Devices and Materials (SSDM2012), PS-11-12, Sep. 26, 2012, Kyoto International Conference Center, Kyoto, Japan
M. Haruta, T. Kobayashi, C. Kitsumoto, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, " Development of a CMOS-based implantable device for wide-area brain functional imaging," IEEE International Meeting for Future of Electron Devices, Kansai (IMFEDK 2012), PC-04, 2012/5/10, Kansai University, Japan
N. Wakama, H. Matsuoka, K. Ando, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, " A polarization analyzing CMOS image sensor with metal wire grid in 65-nm standard CMOS technology ," IEEE International Meeting for Future of Electron Devices, Kansai (IMFEDK 2012), PC-03, 2012/5/10, Kansai University, Japan
K. Sasagawa, K. Ando, H. Matsuoka, T. Kobayashi, T. Noda, T. Tokuda, and J. Ohta, " On-chip metal wire grid polarizer for CMOS image sensor based on 65-nm technology," Conference on Lasers and Electro-Optics (CLEO 2012), CM3M.7, 2012/5/7, San Jose, USA
K. Sasagawa, S. Yokota, T. Matsuda, P. Davis, B. Zhang, L. Keren, T. Kobayashi, T. Noda, T. Tokuda, and J. Ohta, "Baseband Signal Transmission Experiment for Intra-Brain Communication with Implantable Image Sensor," Annual International Conference of the IEEE Engineering in Medicine and Biology Society （EMBC2012）, FrE08.5, 2012/8/31, San Diego, USA
T. Tokuda, T. Miyatani, Y. Maezawa, T. Kobayashi, T. Noda, K. Sasagawa, and J. Ohta, "A CMOS-Based On-Chip Neural Interface Device Equipped with Integrated LED Array for Optogenetics," Annual International Conference of the IEEE Engineering in Medicine and Biology Society （EMBC2012）, FrC16.6, 2012/8/31, San Diego, USA
T. Tokuda, T. Miyatani, Y. Maezawa, T. Kobayashi, T. Noda, K. Sasagawa, and J. Ohta, "CMOS-based on-chip bio-image sensor with integrated micro LED array for optogenetics," Neuroscience 2012 (SfN2012), 207.04/DDD28 , 2012/10/14, New Orleans, USA
M. Haruta, T. Kobayashi, C. Kitsumoto, T. Noda, K. Sasagawa, T. Tokuda, and J. Ohta, "An implantable CMOS-based device with hexagonal shape for wide-area brain functional imaging," Neuroscience 2012 (SfN2012), 927.09/FFF78, 2012/10/17, New Orleans, USA
T. Kobayashi, M. Motoyama, H. Masuda, Y. Ohta, M. Haruta, T. Noda, K. Sasagawa, T. Tokuda, H. Tamura, Y. Ishikawa, S. Shiosaka, and J Ohta, "Fluorescence potentiometry using an implantable multiple imaging system to visualize the neural activities in both visual hemispheres of freely-moving mouse," FENS(Federation of European Neuroscience Societies) Forum 2012, 2012/7/16, Barcelona, Spain.
T. Tokuda, T. Miyatani, Y. Maezawa, T. Kobayashi, T. Noda, K. Sasagawa, and J. Ohta, "CMOS-based Optoelectronic Neural Interface Device for Optogenetics," Neural Interface Conference, H-1, 2012/6/18, Salt Lake City, USA
K. Sasagawa, M. Haruta, C. Kitsumoto, T. Kobayashi, T. Noda, T. Tokuda, and J. Ohta, " An Implantable CMOS Sensor Device for Multi-Area Fluorescence Imaging of A Rat Brain," Neural Interface Conference, H-11, 2012/6/18, Salt Lake City, USA
K. Terao, H. Matsuoka, Y. Nishiyama, T. Tokuda, T. Noda, K. Sasagawa, J. Ohta, K. Kakiuchi, "Diastereoselective [2+2] Photocycloaddition in Microflow System with On-line Analysis," International Conferences on MicroREaction Technology (IMRET12) , Feb. 20-22, 2012, Lyon, France
2011
Y. Sawadsaringkarn, H. Kimura, Y. Maezawa, Arata Nakajima, T. Kobayashi, K. Sasagawa, T. Noda, T. Tokuda, J. Ohta , "A CMOS On-Chip Neural Interface Device with an Integrated Light Source for Optogenetics," (poster), The Asia-Pacific Interdisciplinary Research Conference 2011(AP-IRC 2011), 18PP-8, Nov. 18, 2011, Toyohashi University of Technology
Yi-Li Pan, T. Noda, K. Sasagawa, T. Tokuda, H. Kanda, T. Fujikado, J. Ohta, "Optimization of sputtering condition of IrOx thin film stimulus electrode employed in retinal prosthesis device," (poster), The Asia-Pacific Interdisciplinary Research Conference 2011(AP-IRC 2011), 18PP-12, Nov. 18, 2011, Toyohashi University of Technology
T. Kobayashi, H. Tamura, Y. Hatanaka, M. Motoyama, T. Noda, K. Sasagawa, T. Tokuda, Y. Ishikawa, S. Shiosaka, J. Ohta , "Functional Neuroimaging by Using an Implantable CMOS Multimodal Device in a Freely-Moving Mouse," Biomedical Circuits and Systems Conference 2011 （BioCAS 2011), 5203, Nov. 11, 2011, San Diego, USA
K. Sasagawa, H. Masuda, A. Tagawa, T. Kobayashi, T. Noda, T. Tokuda, J. Ohta, "Micro CMOS Image Sensor for Multi-area Imaging," IFIP/IEEE International Conference on Very Large Scale Integration （VLSI-SoC2011）, Oct. 3, 2011, Royal Plaza Hotel, Hong Kong
T. Noda, T. Kitao, T. Ito, K. Sasagawa, T. Tokuda, Y. Terasawa, H. Tashiro, H. Kanda, T. Fujikado, J. Ohta, "Fabrication of a Flexible Neural Interface Device with CMOS-based Smart Electrodes," IFIP/IEEE International Conference on Very Large Scale Integration （VLSI-SoC2011）, Oct. 3, 2011, Royal Plaza Hotel, Hong Kong
A. Nakajima, T. Kobayashi, T. Noda, K. Sasagawa, T. Tokuda, Y. Ishikawa, S. Shiosaka, J. Ohta, "A novel CMOS image sensor with on-chip micro LED array for spaciotemporally controlled light stimulation and on-chip imaging of a neuronal tissue," 2011 International Conference on Solid State Devices and Materials（SSDM2011）, GH-2-5, Sep. 28, 2011, WINC AICHI, Aichi Japan
K. Sasagawa, K. Ando, T. Kobayashi, T. Noda, T. Tokuda, Ryota Iino, Hiroyuki Noji, J. Ohta, "CMOS image sensor for fluorescent beads counting," 2011 International Conference on Solid State Devices and Materials （SSDM2011）, H-4-3, Sep. 29, 2011, WINC AICHI, Aichi Japan
K. Sasagawa, Takashi Matsuda, Peter Davis, Zhang Bing, Keren Li, T. Kobayashi, T. Noda, T. Tokuda, J. Ohta , "Wireless Intra-Brain Communication for Image Transmission through Mouse Brain," Annual International Conference of the IEEE Engineering in Medicine and Biology Society （EMBC2011）, ThP16.11, Sep. 1, 2011, Copley Place, Boston USA
T. Tokuda, T. Ito, T. Kitao, T. Noda, K. Sasagawa, Y. Terasawa, H. Tashiro, H. Kanda, T. Fujikado, J. Ohta, "CMOS-Based Smart-Electrode-Type Retinal Stimulator with Bullet-Shaped Bulk Pt Electrodes," Annual International Conference of the IEEE Engineering in Medicine and Biology Society （EMBC2011）, SaA7.5, Sep. 1, 2011, Copley Place, Boston USA
T. Tokuda, H. Matsumoka, S. Shishido, T. Noda, K. Sasagawa, J. Ohta, "Performance Improvements of Polarization Analyzing CMOS Image Sensor Using Multiple Pixel Array Architecture and 65nm Standard CMOS Process," (poster), 2011 International Image Sensor Workshop（IISW2011）, P1, Jun. 8, 2011, Prince Hotel Hakodate-Onuma, Hokkaido Japan
K. Sasagawa, K. Ando, T. Kobayashi, T. Noda, T. Tokuda, Y. Hatanaka, H. Tamura, S. Shiosaka, J. Ohta, "An Implantable CMOS Image Sensor with Light Guide Array Structure and Fluorescent Filter," 2011 International Image Sensor Workshop（IISW2011）, R25, Jun. 9, 2011, Prince Hotel Hakodate-Onuma, Hokkaido Japan
T. Tokuda, H. Kimura, Y. Sawadsaringkarn, Y. Maezawa, T. Kobayashi, T. Noda, K. Sasagawa, J. Ohta, "CMOS-based on-chip intelligent neural stimulation / imaging device with an integrated micro light emitter array for optogenetics," (poster), Neuroscience2011 (SfN2011), YY27 306.16, Nov. 13, 2011, Washington DC, USA
T. Kobayashi, M. Motoyama, T. Noda, K. Sasagawa, T. Tokuda, H. Tamura, Y. Ishikawa, S. Shiosaka, J. Ohta, "Potential fluorescent imaging for on-chip cultured neurons, acute slice, and visual cortex by using an implantable imaging device," (poster), Neuroscience2011 (SfN2011), YY26 204.22, Nov. 13, 2011, Washington DC, USA
I. Y. Kim, K. Nomura, K. Kikuta, J. Ohta, T. Tokuda, C. Ohtsuki, "Organic-inorganic hybrids for bioinert coating on implantable electronic devices," (poster), Bioceramics23, P46 , Nov. 14-21, 2011, Istanbul, Turky
T. Kobayashi, M. Motoyama, Y. Sawadsaringkarn, A. Tagawa, T. Noda, K. Sasagawa, T. Tokuda, Y. Hatanaka, H. Tamura, Y. Ishikawa, S. Shiosaka, J. Ohta, "Voltage-sensitive dye imaging for primary cultured neurons, acute slice of cerebral cortex, and visual cortex by using a biomedical photonic LSI (BpLSI) device," (poster), 8th IBRO2011 world congress of neuroscience, Jul. 14, 2011, Viale Filippo Strozzi, 1, 50129 Firenze, Italy
T. Noda, T. Ito, T. Kitao, Y. Terasawa, H. Tashiro, H. Kanda, K. Sasagawa, T. Tokuda, T. Fujikado. J. Ohta, "Fabrication of CMOS Based Flexible Retinal Stimulator with Bullet-Shaped Platinum Electrodes," (poster), Association for Research in Vision and Ophthalmology （ARVO 2011）, 4954-A353, May. 4, 2011, Fort Lauderdale, FL USA
K. Sasagawa, T. Noda, T. Tokuda, M. S. Islam, J. Ohta, "Metallic Nano-Slit Array Lens for Spatial Resolution Improvement of In vivo CMOS image sensor," SSDM 2010, D-7-2, 2010/9/24, The University of Tokyo, Tokyo Japan
A. Nakajima, T. Noda, K. Sasagawa, T. Tokuda,Y. Ishikawa, S. Shiosaka, J. Ohta, "Planar Multi Electrode Array Coupled CMOS Image Sensor for in vitro Electrophysiology," SSDM 2010, G-8-2, 2010/9/24, The University of Tokyo, Tokyo Japan
2010
S. Shishido,T. Noda, K. Sasagawa, T. Tokuda, J. Ohta, "Polarization Analyzing Image Sensor with Monolithically Embedded Polarizer using 65nm CMOS Process," SSDM 2010, G-5-2, 2010/9/23, The University of Tokyo, Tokyo Japan
T. Noda, S. Tomimatsu, K. Sasagawa, T. Tokuda, Y. Terasawa, K. Nishida, T. Fujikado J. Ohta, "Fabrication and in vivo Evaluation of High Performance Stimulus Electrodes Employed in a CMOS Chip for Retinal Prosthesis," SSDM 2010, L-2-4, 2010/9/22, The University of Tokyo, Tokyo Japan
T. Tokuda, Yuki Sagawa, T. Noda, K. Sasagawa, K. Nishida, T. Fujikado, J. Ohta, "A CMOS-Based Multichip Flexible Retinal Stimulator for Simultaneous Multi-Site Stimulation," EMBC2010, SaBPO10.6, 2010/9/4, Buenos Aires, Argentine Republic
S. Shishido, T. Noda, K. Sasagawa, T. Tokuda and J. Ohta, "Polarization-Analyzing Image Sensor in 65nm CMOS Process," NANOPHOTONICS 2010, 2010/6/1, EPOCAL TSUKUBA.
K. Sasagawa, T. Noda, T. Tokuda, J. Ohta, "W-Band Photonic Signal Generation Based on Frequency Doubling,"OSA Frontiers in optics 2010, FMI4, 2010/10/25, Rochester Riverside Conention Center, NY, USA
2009
J. Ohta, T. Tokuda, K. Hiyama, S. Sawamura, K. Sasagawa, K. Nishida, Y. Kitaguchi, M. Kamei, T. Fujikado, Y. Tano, "Retinal stimulator embedded with light-sensing function in distributed microchip architecture for subretinal implantation," International Image Sensor Workshop 2009/6/27, 2009, Bergen ,Norway
J. Ohta, A. Tagawa, H. Minami, T. Noda, K. Sasagawa, T. Tokuda, Y. Hatanaka, Y. Ishikawa, H. Tamura, S. Shiosaka, "A Multimodal Sensing Device for Fluorescence Imaging and Electrical Potential Measurement of Neural Activities in a Mouse Deep Brain," EMBC 2009, pp. T119, SaDPo06.6, 2009/9/5, Minneapolis, USA
T. Tokuda, Yoichi Takeuchi, T. Noda, K. Sasagawa, K. Nishida, Y. Kitaguchi, T. Fujikado, Y. Tano, J. Ohta, "Light-Controlled Retinal Stimulation on Rabbit Using CMOS-Based Flexible Multi-Chip Stimulator," EMBC 2009, pp. T200, ThBPo04.10, 2009/9/3, Minneapolis, USA
T. Tokuda, Y. Takeuchi, T. Noda, K. Sasagawa, J. Ohta, "CMOS-Based Flexible Multi-Site Retinal Stimulator Toward Retinal Prosthesis Technology," CICC 2009, T-12, 2009/9/15, San Jose, USA
A. Tagawa, H. Minami, M. Mitani, T. Noda, K. Sasagawa, T. Tokuda, H. Tamura, Y. Hatanaka, Y. Ishikawa, S. Shiosaka, J. Ohta, "A Multimodal CMOS Sensor Device with an On-Chip Mounted LED and Electrodes for Imaging of Fluorescence and Electrical Potential in a Mouse Deep Brain," SSDM 2009, J-7-4, 2009/10/9, Sendai Japan
K. Sasagawa, M. Mitani, T. Noda, T. Tokuda, S. Shiosaka, J. Ohta, "Light Guide Array Structure for Spatial Resolution Imprivement of Implantable Image Sensor," SSDM 2009, J-7-5, 2009/10/9, Sendai Japan
K. Sasagawa, M. Fujiwara, T. Noda, T. Tokuda, J. Ohta, "Quadruple Frequency Photinic Signal Generation by Optical Frequency Doubling," OSA Annual Meeting 2009, FMD4, 2009/10/12, San Jose, CA.
S. Shishido, Y.Oguro, T.Noda, K.Sasagawa, T. Tokuda, J.Ohta, "CMOS image sensor for recording of intrinsic-optical-signal of the brain," International SoC Design Conference 2009 , 2009/11/22-24, Busan、Korea.
K. Minagawa, T. Noda, K. Sasagawa, T. Tokuda, J. Ohta, "A CMOS-based chemical stimulation with microfluid ejection function toward an artificial synapse," BioCAS 2009, 2009/11/27, Beijing, China
K. Sasagawa, A. Tagawa, H. Minami, M. Mitani, T. Noda, T. Tokuda, H. Tamura, Y. hatanaka, Y. Ishikawa, S. Shiosaka, J. Ohta, "A CMOS sensor for in vivo fluorescence and electrical imaging in a mouse brain," BioCAS 2009, 2009/11/27, Beijing, China
J. Ohta, T. Tokuda, H. Hiyama, S. Swamura, K. Sasagawa, K Nishida, Y. Kitaguchi, M. Kamei, T. Fujikado, Y. Tano, "Light-conrolled reitnal stimulator for subretinal implantation," BioCAS 2009, 2009/11/27, Beijing, China
T. Tokuda, H. Yamada, H. Shimohata, K. Sasagawa, and J. Ohta, "Polarization-analyzing CMOS image sensor with embedded wire-grid polarizers," 2009 INTERNATIONAL IMAGE SENSOR WORKSHOP), 07-04, 2009/6/27, Bergen, Norway
T. Tokuda, H. Yamada, K. Sasagawa, and J. Ohta, "POLARIZATION-ANALYZING IMAGE SENSOR BASED ON STANDARD CMOS TECHNOLOGY," The 15th International Conference on Solid-State Sensors, Actuators & Microsystems (Transducers 2009), M3P.078, 2009/6/23, Denver, Colorado, USA.
T. Tokuda, H. Yamada, K. Sasagawa, and J. Ohta, "Polarization-Analyzing CMOS Image Sensor Using Monolithically Embedded Polarizer for Microchemistry Systems," 2009 IEEE International Symposium on Circuits and Systems, A2L-F-5, 2009/5/25, Taipei, Taiwan
K. Minakawa, K. Sasagawa, T. Tokuda, and J. Ohta, "Development of Electrochemical CMOS chip for Artificial Synapse Device," 5th International Conference of Molecular Electronics and Bioelectronics (M&BE5), D-P03, 2009/3/16, Miyazaki, Japan
A. Tagawa, A. Higuchi, T. Sugiyama, K. Sasagawa, T. Tokuda, H. Tamura, Y. Hatanaka, Yoshinobu Hara, Y. Ishikawa, S. Shiosaka, and J. Ohta, "Development of a multimodal CMOS device for sensing neural activities in deep brain," 5th International Conference of Molecular Electronics and Bioelectronics (M&BE5), D-P04, 2009/3/16, Miyazaki, Japan
S. Shishido, K. Sasagawa, T. Tokuda, S. Shiosaka, Amami Kato, and J. Ohta, "CMOS sensor for the intrinsic-optical-signal imaging of the brain activity," 5th International Conference of Molecular Electronics and Bioelectronics (M&BE5), D-P05, 2009/3/16, Miyazaki, Japan
J. Ohta, T. Tokuda, K. Hiyama, S. Sawamura, K. Sasagawa, Y. Kitaguchi, K. Nishida, M. Kamei, T. Fujikado, Y. Tano, "An Optically Addressable Retinal Stimulator in Distributed Microchip Architecture," ARVO annual meeting, 2009/5/6, Fort Lauderdale, FL, USA
T. Tokuda, S. Sawamura, Y. Terasawa, Y. Tano and J. Ohta, "CMOS LSI-based Multi-chip Flexible Retinal Prosthesis Device for Subretinal Implantation," IEEE Custom Integrated Circuits Conference 2008 (CICC 2008) 13-2, 2008/9/13, San Jose, CA
2008
A. Tagawa, A. Higuchi, T. Sugiyama, K. Sasagawa, T. Tokuda, H. Tamura, S. Shiosaka, and J. Ohta "Development of a CMOS Image Sensor for In-situ Brain Functional Imaging in Freely-moving Mouse," 2008 International Conference on Solid State Devices and Materials (SSDM 2008), E-6-2, 2008/8/25, Tsukuba, Japan
K. Minakawa, H. Yamada, K. Sasagawa, T. Tokuda and J. Ohta, "CMOS Optical Polarization Analyzer Chip for MicroTAS," 2008 International Conference on Solid State Devices and Materials (SSDM 2008), E-6-4, 2008/8/25, Tsukuba, Japan
S. Shishido, K. Kagawa, T. Tokuda and J. Ohta, "A Low-voltage and Lowpower Consumption CMOS Image Sensor using Pulse-width-modulation Scheme for Biomedical Applications," 2008 International Conference on Solid State Devices and Materials (SSDM 2008), P-11-3, 2008/8/25, Tsukuba, Japan
T. Tokuda, R. Asano, K. Hiyama, Y. Terasawa, K. Nishida, Y. Kitaguchi, T. Fujikado, Y. Tano, and J. Ohta, "Multi-finger structure and pulsed-powering operation scheme for CMOS LSI-based flexible stimulator for retinal prosthesis," 30th Annual International IEEE EMBS Conference (EMBC 2008), SaBPo11.3, 2008/8/23, Vancouver, Canada
T. Tokuda, S. Sato, H. Yamada, J. Ohta, "Polarization Analyzing CMOS Sensor for microchamber / Microfluidic System Based on Image Sensor Technology," IEEE Int'l Symposium on Circuits and Systems (ISCAS), C4L-F-2, 2008/5/21, Seatle, WA.
D. Ng, T. Mizuno, T. Tokuda, M. Nunoshita, H. Tamura, Y. Ishikawa, S. Shiosaka and J. Ohta, "Integration of CMOS and MEMS Technologies in the Development of a Neural Imaging and Interface Device: Showcase of an Emerging Bioimaging Technique," IEEE Custom Integrated Circuits Conference 2008, 26.5, 2008/9/19, San Jose, CA
J. Ohta, T. Tokuda, K. Kagawa, A. Uehara, Y. Terasawa , K. Nakauchi, T. Fujikado, Y. Tano, "A Multi-Microchip Retinal Stimulator for in vitro / in vivo Experiments," IEEE Int'l Symposium on Circuits and Systems (ISCAS), 2007/5/29, New Orleans, LA.
D. Ng, T. Mizuno, T. Tokuda, M. Nunoshita, H. Tamura, Y. Ishikawa, S. Shiosaka and J. Ohta, "Integration of CMOS and MEMS Technologies in the Development of a Neural Imaging and Interface Device: Showcase of an Emerging Bioimaging Technique," IEEE Custom Integrated Circuits Conference 2008, 26.5, 2008/9/19, San Jose, CA
D. C. Ng, T. Mizuno, T. Tokuda, M. Nunoshita, H. Tamura, Y. Ishikawa, S. Shiosaka and J. Ohta, "Integration of CMOS and MEMS Technologies in the Development of a Neural Imaging and Interface Device: Showcase of an Emerging Bioimaging Technique," IEEE Custom Integrated Circuits Conference 2008, 26.5, 2008/9/19, San Jose, CA
Y. Terasawa, K. Osawa, M. Ozawa, T. Tokuda, J. Ohta, and Y. tano, "Large-Surface-Area Electrodes Based on Bulk Micromachining," ARVO Annual Meeting, 3020/D6163 2008/4/29, Fort Lauderdale, FL
T. Tokuda, R. Asano, K. Hiyama, Y. Terasawa, Y. Tano, J. Ohta, "A Microelectronics-Based Flexible Retinal Stimulator for Retinal Prosthesis With an Improved Safety and Fault Tolerance," ARVO Annual Meeting, 1783/A593, 2008/4/28, Fort Lauderdale, FL.
Y. Terasawa, K. Osawa, M. Ozawa, T. Tokuda, J. Ohta, Y. Tano, "Large-Surface-Area Electrodes Based on Bulk Micromachining," ARVO Annual Meeting, 3020/D616, 2008/4/28, Fort Lauderdale, FL.
T. Tokuda, R. Asano, Y. Terasawa, M. Nunoshita, K. Nakauchi, K. Nishida, Y. Kitaguchi, T. Fujikado, Y. Tano, and J. Ohta, "Stimulation on rabbit retina using CMOS LSI-based flexible stimulator for retinal prosthesis," International Symposium on Biological and Physiological Engineering, 2A1-1, 2008/1/14, Harbin, China.
T. Tokuda, S. Sato, K. Kagawa, M. Nunoshita, and J. Ohta, "An optical / potential / voltammetric multifunctional CMOS image sensor for on-chip biomolecular / neural analytical applications," 2007 International Image Sensor Workshop (IISW2007), P24, 2007/6/7, Ogunquit, Maine, USA.
2007
T. Tokuda, S. Sato, K. Kagawa, M. Nunoshita and J. Ohta, "CMOS Optical Polarization Analyzer Chip for Micfochamber and Microfuidic System," The 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences (μTAS 2007), W16G 2007/10/10, Paris, FRANCE
T. Tokuda, R. Asano, S. Sugitani, Y. Terasawa, M. Nunoshita, K. Nakauchi, T. Fujikado, Y. Tano, and J. Ohta, "In vivo Stimulation on Rabbit Retina using CMOS LSI-based Multi-Chip Flexible Stimulator for Retinal Prosthesis," 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC2007), SaP2D1.6 (Proceedings pp. 5790-5793) 2007/8/25, Lyon, France
T. Tokuda, S. Sato, M. Nunoshita and J. Ohta, "CMOS Optical Polarization Analyzer Chip for μTAS," 2007 International Conference on Solid State Devices and Materials (SSDM 2007), D-9-3, 2007/9/21, Tsukuba, Japan
T. Tokuda, R. Asano, Y. Terasawa, M. Nunoshita, K. Nakauchi, T. Fujikado, Y. Tano and J. Ohta, "Development of a multi-chip retinal stimulator for in vivo experiments toward retinal prosthesis", 2007 International Conference on Solid State Devices and Materials (SSDM 2007), D-10-4, 2007/9/21, Tsukuba, Japan
D. C. Ng, T. Mizuno, T. Tokuda, K. Kagawa, M. Nunoshita, H. Tamura, S. Shiosaka and J. Ohta, "Development of a CMOS-based Neural Imaging and Interface," 2007 International Conference on Solid State Devices and Materials (SSDM 2007), D-10-6, 2007/9/21, Tsukuba, Japan
J. Ohta, T. Tokuda, K. Kagawa, A. Uehara, Y. Terasawa , K. Nakauchi, T. Fujikado, Y. Tano, "A Multi-Microchip Retinal Stimulator for in vitro / in vivo Experiments," IEEE Int'l Symposium on Circuits and Systems (ISCAS), 2007/5/29, New Orleans, LA.
T. Tokuda, S. Sugitani, R. Asano, A. Uehara, Y. Terasawa, K. Kagawa, M. Nunoshita, and J.Ohta, "An LSI-based flexible stimulator for in vivo neural stimulation," Fourth International Conference on Molecular Electronics and Bioelectronics (M&BE4), 2O_13, 2007/3/15, Tokyo, Japan.
T. Tokuda, S. Sugitani, R. Asano, M. Taniyama, Y. Terasawa, K. Kagawa, M. Nunoshita and J. Ohta, " LSI-based Flexible Multi-Chip Neural Stimulator for in vivo Applications," The First International Symposium on Information and Computer Elements (ISICE 2007), , 2007/9/12, Kitakyushu, Japan
J. Ohta, T. Tokuda, S. Sugitani, M. Taniyama, R. Asano, Y. Terasawa, A. Uehara, K. Nakauchi, T. Fujikado, Y. Tano, "Improvement of Reproducibility and Durability in a Microelectronics-Based Stimulator for Suprachoroidal Transretinal Stimulation (STS)," ARVO Annual Meeting, 2556/B633 2007/5/8, Fort Lauderdale, FL.
2006
T. Tokuda, M. Kawada, S. Sugitani, M. Taniyama, A. Uehara, K. Kagawa, M. Nunoshita, and J. Ohta, "A multi-chip-architecture based flexible stimulation device for retinal prosthesis with a flip-chip packaging technique," 2006 IEEE Engineering in Medicine and Biology 28th Annual Conference FrBP10.5, 2006/9/1, New York City, NY.
T. Tokuda, A. Yamamoto, K .Kagawa, M. Nunoshita, and J. Ohta, "An optical and potential dual-image CMOS sensor for bioscientific applications," Electronic Imaging 2006, 6068-2, 2006/1/17, San Jose, California.
D.C. Ng, T. Nakagawa, T. Tokuda, K. Kagawa, M. Nunoshita, H. Tamura, S. Shiosaka, J. Ohta, "Development of a CMOS Image Sensor for Real Time In vivo Imaging of the Protease Activity Inside the Mouse Hippocampus Int'l Conf. Solid State Devices & Materials (SSDM2006),", p. 892, 2006/9/15, Yokohama.
T. Tokuda, I. Kadowaki, K. Kagawa, M. Nunoshita, J. Ohta, "An Optical/Potential/ Voltammetric Multifunctional CMOS Image Sensor for On-chip Biomolecular/Neural Sensing Applications," Int'l Conf. Solid State Devices & Materials (SSDM2006), p. 894, 2006/9/15, Yokohama.
J. Ohta, T. Tokuda, S. Sugitani, M. Taniyama, M. Nunoshita, A. Uehara, Y.Terasawa, Y. Tano, "Large scalse electrode array based on distributed microchip architecture for retinal prosthesis," Int'l Conf. Solid State Devices & Materials (SSDM2006), p.896, 2006/9/15, Yokohama.
J. Ohta, T. Tokuda, K. Kagawa, A. Uehara, Y. Terasawa , K. Shodo, T. Fujikado, Y. Tano, "Toward 1000-ch electrode array based on distributed microchip architecture for retinal prosthesis," IEEE Int'l Symposium on Circuits and Systems (ISCAS), 2006/5/24, Kos, Greece.
T. Tokuda, D.C. Ng, A. Yamamoto, K. Kagawa, M. Nunoshita, J. Ohta, "An optical and potential dual-image CMOS sensor for on-chip nerual and DNA imaging applications," IEEE Int'l Symposium on Circuits and Systems (ISCAS), 2006/5/22, Kos, Greece.
J. Ohta, T. Tokuda, K. Kagawa, A. Uehara, Y. Terasawa , K. Shodo, T. Fujikado, Y. Tano, "Large-scale Electrode Array Based On Distributed Microchip Architecture For Suprachoroidal Transretinal Stimulation," ARVO Annual Meeting, 2006/5/2, Fort Lauderdale, FL.
2005
T. Tokuda, D. C. Ng, A. Yamamoto, K. Kagawa, M. Nunoshita, and J. Ohta, "A CMOS optical/potential image sensor with 7.5um pixel size for on-chip neural and DNA spot sensing, " 2005 IEEE Engineering in Medicine and Biology 27th Annual Conference 1.5.1-5 2005/9/4, Shanghai China.
T. Tokuda, A. Uehara, J. Ohta, Y. Terasasa, M. Ozawa, T. Fujikado, and Y. Tano, "A multichip-architecture-based flexible and extendible neural stimulation device for retinal prosthesis," Ninth International Conference on Miniaturized Systems for Chemistry and Life Sciences (uTAS), M130E, 2005/10/10, Boston, MA.
D. C. Ng, M. Matsuo, T. Tokuda, K. Kagawa, M. Nunohsita, H. Tamura,, S. Shiosaka, J. Ohta, "A CMOS Image Sensor for in vitro and in vivo Imaging of the Mouse Hippocampus, "Ext. Abst. SSDM（Solid State Devices and Materials）, pp. 74-75, 2005/9, Kobe.
T. Tokuda, D.C. Ng, A. Yamamoto, K. Tanaka, M. Matsuo, K. Kagawa, M. Nunoshita, J. Ohta, "Pulse modulation image sensors for in vitro and in vivo on-chip brain imaging," IEEE Wrokshop CCD&AIS 129-132 2005 6 9 Karuizawa, Nagano.
J. Ohta, T. Tokuda, K. Kagawa, M. Nunoshita, "Retinal prosthesis device based on pulse-frequency-modulation vision chip," IEEE Int'l Symposium on Circuits and Systems (ISCAS) 2923-2926 2005 5 25 Kobe.
J. Ohta, T. Tokuda, K. Kagawa, M. Nunoshita, S. Shiosaka, "Pulse modulation CMOS image sensor for bio-fluorescence imaging applications," IEEE Int'l Symposium on Circuits and Systems (ISCAS) 3487-3490 2005 5 25 Kobe.
T. Tokuda, D.C. Ng, H. Okamoto, K. Kagawa, J. Ohta, M. Nunoshita, "Pulse modulation image sensors for on-chip bioimaging and biosensing applications," Electronic Imaging 2005 1 19 San Jose, CA.
K. Nakauchi, T. Fujikado, J. Ohta, T. Tokuda, H. Kanda, Y. Terasawa, M. Ozawa, A. Hirakata, Y. Tano, "Safety and Effectiveness of Suprachoroidal-Transretinal Stimulation by Chronically Implanted Electrode With Continuous Electrical Stimulation in Rabbits," ARVO2005 2005/5/2 Fort Lauderdale, FL.
J. Ohta, T. Tokuda, K. Kagawa, Y. Terasawa, M. Ozawa,T. Fujikado, Y. Tano, "LSI-Based Stimulus Electrodes for Retinal Prosthesis (Invited)," The 2nd U.S. Department of Energy (DOE) International Symposium on Artificial Sight 2005/4/29 Fort Lauderdale, FL.
2004
T. Tokuda, D. Ng, H. Okamoto, K. Kagawa, J. Ohta, M. Nunoshita, "Wide Dynamic Range Pulse Modulation Image Sensor for On-chip Bioimaging Applications," IEEE Sensors 2004, p.818, 2004/10/25, Wien, Austria.
T. Furumiya, D. Ng, K. Yasuoka, F. Shiraishi, K. Kagawa, T. Tokuda, J. Ohta, M. Nunoshita, "A 16 x 16 pixel pulse-frequency-modulation based image sensor for retinal prosthesis," IEEE Sensors 2004, p.276, 2004/10 24, Wien, Austria.
D. C. Ng, H. Okamoto, T. Tokuda, K. Kagawa, J. Ohta, M. Nunoshita, "A Pulse Modulation CMOS Image Sensor with 120dB Dynamic Range and 1nW/cm2 Resolution for Bioimaging Applications," Ext. Abst. SSDM（Solid State Devices and Materials), pp.384-385, 2004/9/16, Tokyo.
Y.-L. Pan, T. Tokuda, A. Uehara, K. Kagawa, J. Ohta, M. Nunoshita, "A Flexible and Extendible Nerual Stimulation Device with Distributed Multi-chip Architecture for Retinal Prosthesis," Ext. Abst. SSDM（Solid State Devices and Materials), pp.352-353, 2004/9/16, Tokyo.
T. Tokuda, Y.-L. Pan, A. Uehara, K. Kagawa, J. Ohta, M. Nunoshita, "Flexible and extendible nueral stimulation/recording device based on cooperative multi-chip CMOS LSI architecture," Proc. 26th Anual Int'l Conf. IEEE Eng. Medicine & Biology Soc. (EMBS), pp.4322-4325, 2004/9/1-5, San Francisco, CA.
K. Yasuoka, T. Furumiya, D.C. Ng, A. Uehara, K. Kagawa, T. Tokuda, J. Ohta, M. Nunoshita, "A Pulsed vision chip with image processing functions for retinal prosthesis," Int'l Conf. Optics & Photonics in Technology Frontier (ICO), pp.89-90, 2004/7/13, Chiba.
A. Uehara, Y.-L. Pan, K. Kagawa, T. Tokuda, J. Ohta, M. Nunoshita, "A Micro-Sized Photo Detectable Stimulator Array for Retinal Prosthesis by Distributed Sensor Network Approach, "VLSI Symposium, 2004/6/18, Honolulu, Hawai.
J. Ohta, T. Furumiya, D.C. Ng, A. Uehara, K. Kagawa, T. Tokuda, M. Nunoshita, "A retinal prosthesis device using a pulse-frequency-modulation CMOS image sensor," Asia and South Pacific Design Automation Conference (ASP-DAC) , pp.549-550, 2004/1/29, Yokohama.
J. Ohta, K. Yamamoto, Y. Oya, K. Kagawa, T. Tokuda, M. Nunoshita, "Improvement of a saturation characteristics of a frequency-demodulation CMOS image sensor," Asia and South Pacific Design Automation Conference (ASP-DAC), pp.575-576, 2004/1/29, Yokohama.
2003
D. C. Ng, T. Furumiya, A. Uehara, K. Kagawa, T. Tokuda, J. Ohta, M. Nunoshita, "Pulsed Frequency Modulation-based Retinal Implant Chip with 1-bit Pulse Image Processing," EOS Topical Meeting Optics in Computing, 2004/4/21, Engelberg, Switzerland.
J. Ohta, T. Furumiya, D.C. Ng, A. Uehara, K. Kagawa, T. Tokuda, M. Nunoshita, "Improvement of a Pulse-Frqeuncy-Modulation-Based Photosensor for a Retinal Prosthesis," IEEE Sensors, p.7, 2003/10/22, Tronto.
A. Uehara ,D.C. Ng, T. Furumiya , K. Kagawa, T. Tokuda, J .Ohta, M. Nunoshita, "A CMOS Neural-interface Chip with 3-channel Voltage Monitoring for Retinal Prosthesis," IEEE EMBS Asian-Pacific Conference on Biomedical Engineering, 2003/10/20, Keihanna, Kyoto.
J. Ohta, T. Furumiya, D.C. Ng, A. Uehara, K. Isakari, K. Kagawa, T. Tokuda, M. Nunoshita, "A retinal prosthesis device using a CMOS image sensor employed with modified pulse frequency modulation" IEEE Wrokshop CCD&AIS, 2003/5/16, Elmau, Germany.
T. Tokuda, Y. Sakano, K. Kagawa, J. Ohta, M. Nunoshita" Backside-hybrid photodetector and image sensor for trans-chip detection of NIR light" IEEE Wrokshop CCD&AIS, 2003/5/16, Elmau, Germany.
M. Okinaka, Y. Hamana, T. Tokuda, J. Ohta and M. Nunoshita, "The Growth Temperature Dependence of Incorporation of C Atoms into GeC Epilayers on Si (001) Substrates," E-MRS 2002 Spring Meeting, Strasbourg, France, June 18-21, 2002.
2002
M. Okinaka, K. Miyatake, Y. Hamana, T. Tokuda, J. Ohta and M. Nunoshita, "The effect of Ar+ ion bombardment on crystalline quality of GeC/Si (001), " The Second International Workshop on New Group IV (Si-Ge-C) Semiconductors, Kofu, Japan, June 2-4, 2002.
2001
T. Tokuda, R. Dansho, M. Okinaka, J. Ohta, and M. Nunoshita, "MBE Growth of GeC on Si(001) using Arc Plasma C source," Intl Conf. Crystal Growth, p.586, Kyoto, Japan, August, 2001.
K. Sasagawa, H. Yoshida, T. Tokuda, J. Ohta, and M. Nunoshita, "Effects of optical polarization in reflection-mode near-field optical microscopy," Technical Digest CLEO/PR 2001, pp.II-356-357, Chiba, Japan, July, 2001.
J. Ohta, H. Sakata, T. Tokuda, and M. Nunoshita "Low-voltage operation of a CMOS image sensor based on a pulse frequency modulation" Proc. SPIE 4306 319-326 (2001) 1/22-24, Electronic Imaging. 2000.
2000
J. Ohta, A. Uehara, T. Tokuda, and M. Nunoshita "A pulsed vision chip with inhibitory interconnections" Proc. SPIE 4089 488-495 (2000) 6 Optics in Computing (OC2000).
J. Ohta, A. Uehara, T. Tokuda, and M. Nunoshita "Pulse-Modulated Vision Chips with Versatile-Interconnected Pixels" Lecture Notes in Computer Science 1800 1063-1071 (2000) 5, 5th Workshop on Optics and Computer Science (WOCS).
1997
T. Tokuda, A.Wakahara, S.Noda, and A.Sasaki, "Improvement of In incorporation into GaInN by plasma-excited OMVPE," The 4th IUMRS international conference in Asia, U3.6, Chiba, Japan (1997).
1995
A.Sasaki, Y.Nabetani, T.Ishikawa, N.Yamamoto, and T. Tokuda, "Quantum Dot by Isand Formation in InAs/GaAs Heteroepitaxy," 37th Electronic Materials Conference , H1, Virginia, USA (1995)
A.Wakahara, T. Tokuda, and A.Sasaki, "Growth of GaN films by plasma-excited organometallic vapor phase epitaxy," International Conference on SiC and Related Materials, WeP-2, Kyoto, Japan (1995).
T. Tokuda, A.Wakahara, and A.Sasaki, "Growth of GaN on Sapphire(0001) by Plasma- Assisted Organometallic Vapor Phase Epitaxy," Topical workshop on III-V nitrides, P-20, Nagoya, Japan (1995).
Thanet Pakpuwadon, Nattakarn Wuthibenjaphonchai, 春田 牧人, 笹川 清隆, 德田 崇, 太田 淳 Optical power transfer platform for ultra-small implantable device with alternative current limitations LSIとシステムのワークショップ2019, 東京大学生産技術研究所 2019/5/13
Yasumi Ohta, Mamiko Kawahara, Mark Christian San Gabriel Guinto, Tasuku Kawasaki, Makito Haruta, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, "ドーパミン検出用マイクロダイアリシスと組み合わせたLED光刺激デバイス," 第42回日本神経科学大会(NEURO2019), 2019.7.27. Toki Messe, Niigata, Japan.
Mark Christian San Gabriel Guinto, Yasumi Ohta, Mamiko Kawahara, Makito Haruta, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta ,"Investigation of neural activity related to feeding behavior in GCaMP6 transgenic mice using an implantable imaging device," 第42回日本神経科学大会(NEURO2019), 2019.7.27. Toki Messe, Niigata, Japan.
Romeo B Rebusi, Mark Guinto, Yasumi Ohta, Mamiko Kawahara, Makito Haruta, Kiyotaka Sasagawa, Tokuda Takashi, Jun Ohta, "Implantable needle-type imaging sensor device for simultaneous detection of neuronal activity in nuclei involved in nociception," 第42回日本神経科学大会(NEURO2019), 2019.7.27. Toki Messe, Niigata, Japan.
"Young Researcher Award", The 4th IUMRS International Conference in Asia, Chiba, Japan (1997), Takashi Tokuda, "Improvement of In incorporation into GaInN by plasma-excited OMVPE",
