Kiyotaka Sasagawa

Publication Activity (10 Years)

Years Active: 2005-2024
Publications (10 Years): 38

Top Topics

Fluorescence Microscopy

Noise Cancellation

Top Venues

Publications

Ryoma Okada, Maya Mizuno, Tomoaki Nagaoka, Hironari Takehara, Makito Haruta, Hiroyuki Tashiro, Jun Ohta, Kiyotaka Sasagawa
Millimeter-Wave Band Electro-Optical Imaging System Using Polarization CMOS Image Sensor and Amplified Optical Local Oscillator Source. Sensors 24 (13) (2024)
Kiyotaka Sasagawa, Ryoma Okada, Yoshihiro Akamatsu, Maya Mizuno, Hironari Takehara, Makito Haruta, Hiroyuki Tashiro, Jun Ohta
Exposure Time Control Method for Higher Intermediate Frequency in Optical Heterodyne Imaging and Its Application to Electric-Field Imaging Based on Electro-Optic Effect. Sensors 24 (4) (2024)
Kiyotaka Sasagawa, Yuki Ito, Daniel Schaeffer, Yoshinori Sunaga, Hironari Takehara, Makito Haruta, Hiroyuki Tashiro, Jun Ohta
Front-light Structure for a Lensless Fluorescence Imaging Device with a Hybrid Emission Filter. BioCAS (2023)
Erus Rustami, Kiyotaka Sasagawa, Kenji Sugie, Yasumi Ohta, Hironari Takehara, Makito Haruta, Hiroyuki Tashiro, Jun Ohta
Thin and Scalable Hybrid Emission Filter via Plasma Etching for Low-Invasive Fluorescence Detection. Sensors 23 (7) (2023)
Ronnakorn Siwadamrongpong, Nicha Sato, Kenji Sugie, Yasumi Ohta, Makito Haruta, Hironari Takehara, Hiroyuki Tashiro, Kiyotaka Sasagawa, Jun Ohta
Development of Compact Readout Device for Neural Observation System using Fluorescence Imaging and Fast-scan Cyclic Voltammetry. EMBC (2022)
Motoshi Sobue, Hirokazu Takata, Hironari Takehara, Makito Haruta, Hiroyuki Tashiro, Kiyotaka Sasagawa, Ryo Kawasaki, Jun Ohta
Clear Fundus Images Through High-Speed Tracking Using Glare-Free IR Color Technology. J. Robotics Mechatronics 34 (5) (2022)
Kiyotaka Sasagawa, Pakpuwadon Thanet, Mark Christian Guinto, Yasumi Ohta, Makito Haruta, Hironari Takehara, Hiroyuki Tashiro, Jun Ohta
Mouse Brain Imaging Using a Self-Reset CMOS Image Sensor over 70-dB SNR. MWSCAS (2022)
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 Akay, Jun Ohta
Micro-LED Array-Based Photo-Stimulation Devices for Optogenetics in Rat and Macaque Monkey Brains. IEEE Access 9 (2021)
Kenji Sugie, Kiyotaka Sasagawa, Yasumi Ohta, Hironari Takehara, Makito Haruta, Hiroyuki Tashiro, Jun Ohta
Implantable CMOS image sensor with a neural amplifier for simultaneous recording of optical and electrophysiological signals. BioCAS (2021)
Kiyotaka Sasagawa, Makito Haruta, Yasumi Ohta, Hironari Takehara, Jun Ohta
Miniaturized CMOS imaging device for implantable applications. VLSI-DAT (2020)
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 Trans. Circuits Syst. I Fundam. Theory Appl. (4) (2020)
Hironari Takehara, Hirofumi Sumi, Wang Ze, Takahiro Kondo, Makito Haruta, Kiyotaka Sasagawa, Jun Ohta
Multispectral Near-infrared Imaging Technologies for Nonmydriatic Fundus Camera. BioCAS (2019)
Kiyotaka Sasagawa, Kenji Sugie, Yasumi Ohta, Mamiko Kawahara, Makito Haruta, Jun Ohta
Live Demonstration: Lensless Highly Sensitive Fluorescence Imaging. BioCAS (2019)
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. ISCAS (2019)
Mehdi Noormohammadi Khiarak, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, Sylvain Martel, Yves De Koninck, Benoit Gosselin
Live Demonstration: An Energy-Efficient CMOS Biophotometry Sensor Interface. ISCAS (2018)
Mehdi Noormohammadi Khiarak, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, Sylvain Martel, Yves De Koninck, Benoit Gosselin
An Energy-Efficient CMOS Biophotometry Sensor With Incremental DT-∑Δ ADC Conversion. ISCAS (2018)
Takashi Tokuda, Wuthibenjaphonchai Nattakarn, Takaaki Ishizu, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Jun Ohta, Mohamad Sawan
Live Demonstration: IoT micronode with optical ID transmission capability operated by optical energy harvesting. ISCAS (2018)
Hironari Takehara, Yuta Nakamoto, Narihito Ikeda, Kiyotaka Sasagawa, Makito Haruta, Toshihiko Noda, Takashi Tokuda, Jun Ohta
Compact Lensless Fluorescence Counting System for Single Molecular Assay. IEEE Trans. Biomed. Circuits Syst. 12 (5) (2018)
Wuthibenjaphonchai Nattakarn, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Mohamad Sawan, Sandro Carrara, Jun Ohta
Battery-Free. Sticker-Like, Device for Health Monitoring, Operated by Optical Power Transfer. BioCAS (2018)
Mehdi Noormohammadi Khiarak, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, Sylvain Martel, Yves De Koninck, Benoit Gosselin
A 17-bit 104-dB-DR High-Precision Low-Power CMOS Fluorescence Biosensor With Extended Counting ADC and Noise Cancellation. NEWCAS (2018)
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)
Jun Ohta, Toshihiko Noda, Kenzo Shodo, Yasuo Terasawa, Makito Haruta, Kiyotaka Sasagawa, Takashi Tokuda
Stimulator Design of Retinal Prosthesis. IEICE Trans. Electron. (6) (2017)
Toshihiko Noda, Shinya Nishimura, Yukari Nakano, Yasuo Terasawa, Makito Haruta, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta
Fabrication and in vivo demonstration of microchip-embedded smart electrode device for neural stimulation in retinal prosthesis. BioCAS (2017)
Jun Ohta, Yasumi Ohta, Hiroaki Takehara, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Makito Haruta, Takuma Kobayashi, Yasemin M. Akay, Metin Akay
Implantable Microimaging Device for Observing Brain Activities of Rodents. Proc. IEEE 105 (1) (2017)
Kiyotaka Sasagawa, Makito Haruta, Koki Fujimoto, Yasumi Ohta, Toshihiko Noda, Takashi Tokuda, Jun Ohta
Fluorescence imaging device with an ultra-thin micro-LED. BioCAS (2017)
Mehdi Noormohammadi Khiarak, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta, Sylvain Martel, Yves De Koninck, Benoit Gosselin
A high-precision CMOS biophotometry sensor with noise cancellation and two-step A/D conversion. NEWCAS (2017)
Takashi Tokuda, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Jun Ohta
CMOS-based opto-electric neural interface devices for optogenetics. MWSCAS (2017)
Takahiro Yamaguchi, Hajime Hayami, Yoshinori Sunaga, Makito Haruta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta
Parylene-based flexible imaging device for physiological measurement of rodent brain. IEEE SENSORS (2017)
Takashi Tokuda, Hiroaki Takehara, Toshihiko Noda, Kiyotaka Sasagawa, Jun Ohta
CMOS-Based Optoelectronic On-Chip Neural Interface Device. IEICE Trans. Electron. (2) (2016)
Toshihiko Noda, Hiroaki Takehara, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta
Neural stimulators for retinal prosthesis embedded with CMOS microchips. MWSCAS (2016)
Takashi Tokuda, Toshikazu Kawamura, Keita Masuda, Tomohiro Hirai, Hironari Takehara, Yasumi Ohta, Mayumi Motoyama, Hiroaki Takehara, Toshihiko Noda, Kiyotaka Sasagawa, Jun Ohta, Teru Okitsu, Shoji Takeuchi
In Vitro Long-Term Performance Evaluation and Improvement in the Response Time of CMOS-Based Implantable Glucose Sensors. IEEE Des. Test 33 (4) (2016)
Takashi Tokuda, Satoki Noguchi, Satoru Iwasaki, Hiroaki Takehara, Toshihiko Noda, Kiyotaka Sasagawa, Jun Ohta
CMOS-based opto-electronic neural interface devices for optogenetics. EMBC (2016)
Hironari Takehara, Yuta Nakamoto, Kiyotaka Sasagawa, Hiroaki Takehara, Toshihiko Noda, Takashi Tokuda, Jun Ohta
Compact lensless digital counting system for fluorescent micro-reaction-chamber array. BioCAS (2016)
Kiyotaka Sasagawa, Takahiro Yamaguchi, Makito Haruta, Yasumi Ohta, Hiroaki Takehara, Toshihiko Noda, Takashi Tokuda, Jun Ohta
Hemodynamic imaging using an implantable self-reset image sensor. BioCAS (2016)
Jun Ohta, Hironari Takehara, Kiyotaka Sasagawa, Hiroaki Takehara, Toshihiko Noda, Takashi Tokuda
On-chip fluorescence detection system with high-density microchamber array based on CMOS image sensor. ISCAS (2016)
Takashi Tokuda, Hiroaki Takehara, Toshihiko Noda, Kiyotaka Sasagawa, Jun Ohta
CMOS-based on-chip neural interface devices for optogenetics. BioCAS (2015)
Toshihiko Noda, Takumi Fujisawa, Ryohei Kawasaki, Hiroyuki Tashiro, Hiroaki Takehara, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta
Fabrication and functional demonstration of a smart electrode with a built-in CMOS microchip for neural stimulation of a retinal prosthesis. EMBC (2015)
Hironari Takehara, Mizuki Nagasaki, Kiyotaka Sasagawa, Hiroaki Takehara, Toshihiko Noda, Takashi Tokuda, Hiroyuki Noji, Jun Ohta
High coupling efficiency contact imaging system having micro light pipe array for a digital enzyme-linked immunosorbent assay. BioCAS (2015)
Kiyotaka Sasagawa, Yoshinori Sunaga, Makito Haruta, Takahiro Yamaguchi, Hironari Takehara, Hiroaki Takehara, Toshihiko Noda, Takashi Tokuda, Jun Ohta
Demonstration of implantable CMOS image sensors for functional brain imaging. BioCAS (2014)
Kiyotaka Sasagawa, Takahiro Yamaguchi, Makito Haruta, Yoshinori Sunaga, Hironari Takehara, Toshihiko Noda, Takashi Tokuda, Jun Ohta
An implantable image sensor with self-reset function for brain imaging. BioCAS (2014)
Yoshinori Sunaga, Makito Haruta, Takahiro Yamaguchi, Mayumi Motoyama, Yasumi Ohta, Hiroaki Takehara, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Jun Ohta
An implantable green fluorescence imaging device using absorption filters with high excitation light rejection ratio. BioCAS (2014)
Takashi Tokuda, S. Nakajima, Y. Maezawa, Toshihiko Noda, Kiyotaka Sasagawa, Yasuyuki Ishikawa, Sadao Shiosaka, Jun Ohta
An in vitro demonstration of CMOS-based optoelectronic neural interface device for optogenetics. EMBC (2013)
Kiyotaka Sasagawa, Yoshiaki Ishii, Shogo Yokota, Takashi Matsuda, Peter Davis, Bing Zhang, Keren Li, Toshihiko Noda, Takashi Tokuda, Jun Ohta
Implantable image sensor based on intra-brain image transmission. EMBC (2013)
Jun Ohta, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Yasuo Terasawa, Hironari Kanda, Takashi Fujikado
A CMOS microchip-based retinal prosthetic device for large numbers of stimulation in wide area. ISCAS (2013)
Jun Ohta, Chikara Kitsumoto, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda, Mayumi Motoyama, Yasumi Ohta, Takuma Kobayashi, Yasuaki Ishikawa, Sadao Shiosaka
A micro imaging device for measuring neural actvities in the mouse deep brain with minimal invasiveness. BioCAS (2012)
Takashi Matsuda, Bing Zhang, Keren Li, Kiyotaka Sasagawa, Jun Ohta, Peter Davis
Proposal and evaluation of intra-body sensing via sheet medium. INSS (2012)
Kiyotaka Sasagawa, Shogo Yokota, Takashi Matsuda, Peter Davis, Bing Zhang, Keren Li, Takuma Kobayashi, Toshihiko Noda, Takashi Tokuda, Jun Ohta
Baseband signal transmission experiment for intra-brain communication with implantable image sensor. EMBC (2012)
Kiyotaka Sasagawa, Shogo Yokota, Chikara Kitsumoto, Takashi Matsuda, Peter Davis, Bing Zhang, Keren Li, Toshihiko Noda, Takashi Tokuda, Jun Ohta
Image signal transmission through brain by an implantable micro-imager. BioCAS (2012)
Takashi Tokuda, Tomoaki Miyatani, Yasuyo Maezawa, Takuma Kobayashi, Toshihiko Noda, Kiyotaka Sasagawa, Jun Ohta
A CMOS-based on-chip neural interface device equipped with integrated LED array for optogenetics. EMBC (2012)
Jun Ohta, Takuma Kobayashi, Toshihiko Noda, Kiyotaka Sasagawa, Takashi Tokuda
CMOS Imaging Devices for Biomedical Applications. IEICE Trans. Commun. (9) (2011)
Takashi Tokuda, Takasuke Ito, Takuya Kitao, Toshihiko Noda, Kiyotaka Sasagawa, Yasuo Terasawa, Hiroyuki Tashiro, Hironari Kanda, Takashi Fujikado, Jun Ohta
CMOS-based smart-electrode-type retinal stimulator with bullet-shaped bulk Pt electrodes. EMBC (2011)
Kiyotaka Sasagawa, Takashi Matsuda, Peter Davis, Bing Zhang, Keren Li, Takuma Kobayashi, Toshihiko Noda, Takashi Tokuda, Jun Ohta
Wireless intra-brain communication for image transmission through mouse brain. EMBC (2011)
Kiyotaka Sasagawa, Hiroyuki Masuda, Ayato Tagawa, Takuma Kobayashi, Toshihiko Noda, Takashi Tokuda, Jun Ohta
Micro CMOS image sensor for multi-area imaging. VLSI-SoC (2011)
Toshihiko Noda, Takuya Kitao, Takasuke Ito, Kiyotaka Sasagawa, Takashi Tokuda, Yasuo Terasawa, Hiroyuki Tashiro, Hiroyuki Kanda, Takashi Fujikado, Jun Ohta
Fabrication of a flexible neural interface device with CMOS-based smart electrodes. VLSI-SoC (2011)
Takashi Tokuda, Yoichi Takeuchi, Yuki Sagawa, Toshihiko Noda, Kiyotaka Sasagawa, Kentaro Nishida, Takashi Fujikado, Jun Ohta
Development and in vivo Demonstration of CMOS-Based Multichip Retinal Stimulator With Simultaneous Multisite Stimulation Capability. IEEE Trans. Biomed. Circuits Syst. 4 (6) (2010)
Takashi Tokuda, Yoichi Takeuchi, Toshihiko Noda, Kiyotaka Sasagawa, Jun Ohta
CMOS-based flexible multi-site retinal stimulator toward retinal prosthesis technology. CICC (2009)
Takashi Tokuda, Hirofumi Yamada, Kiyotaka Sasagawa, Jun Ohta
Polarization-analyzing CMOS Image Sensor using Monolithically Embedded Polarizer for Microchemistry Systems. ISCAS (2009)
Jun Ohta, Takashi Tokuda, Kiyotaka Sasagawa, Toshihiko Noda
Implantable CMOS Biomedical Devices. Sensors 9 (11) (2009)
Takashi Tokuda, Hirofumi Yamada, Kiyotaka Sasagawa, Jun Ohta
Polarization-Analyzing CMOS Image Sensor With Monolithically Embedded Polarizer for Microchemistry Systems. IEEE Trans. Biomed. Circuits Syst. 3 (5) (2009)
Kiyotaka Sasagawa, Masahiro Tsuchiya
Real-time monitoring system of RF near-field distribution images on the basis of 64-channel parallel electro-optic data acquisition. IEICE Electron. Express 2 (24) (2005)