A biomimetic eye with a hemispherical perovskite nanowire array retina
| Autor: | Ali Javey, Daquan Zhang, Zhiyong Fan, Qianpeng Zhang, Yuanjing Lin, Zhenghao Long, Xiao Qiu, Leilei Gu, Lei Shu, Matthew Kam, Swapnadeep Poddar |
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| Rok vydání: | 2020 |
| Předmět: |
Retina
Multidisciplinary Materials science genetic structures business.industry Nanowire High resolution 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Wide field eye diseases Nanowire array 0104 chemical sciences medicine.anatomical_structure Nanosensor medicine Optoelectronics Human eye sense organs 0210 nano-technology business Perovskite (structure) |
| Zdroj: | Nature. 581:278-282 |
| ISSN: | 1476-4687 0028-0836 |
| Popis: | Human eyes possess exceptional image-sensing characteristics such as an extremely wide field of view, high resolution and sensitivity with low aberration1. Biomimetic eyes with such characteristics are highly desirable, especially in robotics and visual prostheses. However, the spherical shape and the retina of the biological eye pose an enormous fabrication challenge for biomimetic devices2,3. Here we present an electrochemical eye with a hemispherical retina made of a high-density array of nanowires mimicking the photoreceptors on a human retina. The device design has a high degree of structural similarity to a human eye with the potential to achieve high imaging resolution when individual nanowires are electrically addressed. Additionally, we demonstrate the image-sensing function of our biomimetic device by reconstructing the optical patterns projected onto the device. This work may lead to biomimetic photosensing devices that could find use in a wide spectrum of technological applications. A biomimetic electrochemical eye is presented that has a hemispherical retina made from a high-density array of perovskite nanowires that are sensitive to light, mimicking the photoreceptors of a biological retina. |
| Databáze: | OpenAIRE |
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