T
Takashi Tokuda
Researcher at Tokyo Institute of Technology
Publications - 282
Citations - 3711
Takashi Tokuda is an academic researcher from Tokyo Institute of Technology. The author has contributed to research in topics: Image sensor & CMOS. The author has an hindex of 29, co-authored 280 publications receiving 3336 citations. Previous affiliations of Takashi Tokuda include National Presto Industries & Kyoto University.
Papers
More filters
Journal ArticleDOI
Multimodal Complementary Metal–Oxide–Semiconductor Sensor Device for Imaging of Fluorescence and Electrical Potential in Deep Brain of Mouse
Ayato Tagawa,Hiroki Minami,Masahiro Mitani,Toshihiko Noda,Kiyotaka Sasagawa,Takashi Tokuda,Hideki Tamura,Yumiko Hatanaka,Yasuyuki Ishikawa,Sadao Shiosaka,Jun Ohta +10 more
TL;DR: In this article, a multimodal complementary metaloxide-semiconductor (CMOS) sensor device was developed for observing neural activities in the deep brain of a mouse, which includes an image sensor, electrodes, and a light-emitting diode (LED).
Journal ArticleDOI
Substrate nitridation effect and low temperature growth of GaN on sapphire (0 0 0 1) by plasma-excited organometallic vapor-phase epitaxy
TL;DR: In this paper, the surface structure of the nitrided layer and the relationship between the nitridation conditions and the crystalline quality of the GaN epitaxial layer were investigated.
Journal ArticleDOI
Wide field-of-view lensless fluorescence imaging device with hybrid bandpass emission filter
TL;DR: In this article, a hybrid bandpass filter composed of interference filters, an absorption filter, and a fiber optic plate was used to obtain high excitation light rejection characteristics even in a lensless setup.
Journal ArticleDOI
Improved Charge Pump Design and Ex Vivo Experimental Validation of CMOS 256-Pixel Photovoltaic-Powered Subretinal Prosthetic Chip
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 +12 more
TL;DR: The function of the proposed chip has been further validated successfully with the ex vivo experimental results by recording the electrophysiological responses of retinal ganglion cells (RGCs) of retinas from retinal degeneration (rd1) mice with a multi-electrode array (MEA).
Journal ArticleDOI
Optical and Electric Multifunctional CMOS Image Sensors for On-Chip Biosensing Applications.
TL;DR: A sensor architecture that allows flexible configuration of a sensing pixel array consisting of optical and electric sensing pixels, and multifunctional CMOS image sensors that can sense light intensity and electric potential or apply a voltage to an on-chip measurement target are developed.