Wide-range and precise tissue impedance analysis circuit with ultralow current source using gate-induced drain-leakage current. - Koji Kiyoyama; Yoshiki Takezawa; Tatsuya Goto; Keita Ito; Shoma Uno; Kenji Shimokawa; Satoru Nishino; Hisashi Kino; Tetsu Tanaka (BioCAS, 2016)

Experimental evaluation of stimulus current generator with Laplacian edge-enhancement for 3-D stacked retinal prosthesis chip. - Kenji Shimokawa; Zhengyang Qian; Yoshiki Takezawa; Hisashi Kino; Takafumi Fukushima; Kouji Kiyoyama; Tetsu Tanaka (BioCAS, 2017)

Ultrawide range square wave impedance analysis circuit with ultra-slow ring-oscillator using gate-induced drain-leakage current. - Yoshiki Takezawa; Koji Kiyoyama; Kenji Shimokawa; Zhengyang Qian; Hisashi Kino; Takafumi Fukushima; Tetsu Tanaka (BioCAS, 2017)