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Proceedings Paper

Bacteriorhodopsin-based bipolar photosensor for biomimetic sensing
Author(s): Katsuyuki Kasai; Yoshihiro Haruyama; Toshiki Yamada; Makoto Akiba; Yukihiro Tominari; Takahiro Kaji; Toshifumi Terui; Ferdinand Peper; Shukichi Tanaka; Yoshitada Katagiri; Hiroshi Kikuchi; Yoshiko Okada-Shudo; Akira Otomo
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Paper Abstract

Bacteriorhodopsin (bR) is a promising biomaterial for several applications. Optical excitation of bR at an electrode-electrolyte interface generates differential photocurrents while an incident light is turned on and off. This unique functional response is similar to that seen in retinal neurons. The bR-based bipolar photosensor consists of the bR dip-coated thin films patterned on two ITO plates and the electrolyte solution. This bipolar photocell will function as a biomimetic photoreceptor cell. The bipolar structure, due to the photocurrent being generated in alignment with the cathodic direction, makes the excitatory and inhibitory regions possible. This scheme shows our bipolar cell can act as a basic unit of edge detection and forms the artificial visual receptive field.

Paper Details

Date Published: 1 October 2013
PDF: 8 pages
Proc. SPIE 8817, Nanobiosystems: Processing, Characterization, and Applications VI, 88170N (1 October 2013); doi: 10.1117/12.2026517
Show Author Affiliations
Katsuyuki Kasai, National Institute of Information and Communications Technology (Japan)
Yoshihiro Haruyama, National Institute of Information and Communications Technology (Japan)
Osaka City Univ. (Japan)
Toshiki Yamada, National Institute of Information and Communications Technology (Japan)
Makoto Akiba, National Institute of Information and Communications Technology (Japan)
Yukihiro Tominari, National Institute of Information and Communications Technology (Japan)
Takahiro Kaji, National Institute of Information and Communications Technology (Japan)
Toshifumi Terui, National Institute of Information and Communications Technology (Japan)
Ferdinand Peper, National Institute of Information and Communications Technology (Japan)
Shukichi Tanaka, National Institute of Information and Communications Technology (Japan)
Yoshitada Katagiri, National Institute of Information and Communications Technology (Japan)
Hiroshi Kikuchi, NHK Science & Technical Research Labs. (Japan)
Yoshiko Okada-Shudo, The Univ. of Electro-Communications (Japan)
Akira Otomo, National Institute of Information and Communications Technology (Japan)


Published in SPIE Proceedings Vol. 8817:
Nanobiosystems: Processing, Characterization, and Applications VI
Norihisa Kobayashi; Fahima Ouchen; Ileana Rau, Editor(s)

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