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.
- retinal prosthesis
- photoelectric dye
- surface potential
Uchida, T., Nitta, M., & Kanashima, S. (2015). Synthesis and Light-Induced Surface Potential Observation of Retinal Prosthesis Using Polyethylene Thin Films Immobilized with Photoelectric Dyes. Journal of Photopolymer Science and Technology, 28(2), 261-267. https://doi.org/10.2494/photopolymer.28.261