Synthesis and Light-Induced Surface Potential Observation of Retinal Prosthesis Using Polyethylene Thin Films Immobilized with Photoelectric Dyes

Tetsuya Uchida, Makoto Nitta, Syoko Kanashima

Research output: Contribution to journalArticle


Photoelectric dyes that absorb light and convert photon energy to electric potential have previously been shown to stimulate retinal neurons in cultures. As such, we have designed a new type of retinal prosthesis using polyethylene films coupled with photoelectric dye molecules. In this study, the electric potentials on the film were observed using a scanning Kelvin probe microscope under light and dark conditions. As a result, electric potentials were observed on the film, which were dependent on light intensity and wavelength. Furthermore, the electric potentials showed a rapid on-off response to light.
Original languageEnglish
Pages (from-to)261-267
Number of pages7
JournalJournal of Photopolymer Science and Technology
Issue number2
Publication statusPublished - 2015
Externally publishedYes



  • retinal prosthesis
  • photoelectric dye
  • surface potential

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