A self-powered flexible-vision electronic skin for rapid image recognition has been fabricated from piezophototronic GaN nanowires. The basic structure of each photodetecting pixel consists of horizontally-aligned GaN nanowires crossing a cross-finger electrode, and 6 × 6 photodetecting pixels that form a patterned sensing matrix. The working mechanism is based on the piezophototronic effect, and the device can harvest a tiny amount of mechanical energy and directly output photodetecting signals without any external electrical power. The output piezoelectric voltage is significantly dependent on UV illumination, and the response is up to ~76 for 80 µ W cm −2 light. The response and recovery times are very short. A practical application of the device for rapid image recognition has been simply demonstrated, and this shows the potential for realizing an artificial intelligent retina. This work can promote the development of wearable flexible electronics and expan...

中文翻译：

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基于压电GaN纳米线的自供电柔性视觉电子皮肤，可快速识别图像

一种自供电的柔性视觉电子皮肤，用于快速图像识别，是由压电GaN纳米线制成的。每个光电检测像素的基本结构由与交叉指状电极交叉的水平排列的GaN纳米线和形成图案化传感矩阵的6×6光电检测像素组成。该工作机制基于压电效应，该设备可收集少量机械能并直接输出光检测信号，而无需任何外部电源。输出压电电压在很大程度上取决于UV照明，对于80 µW cm -2的光，响应高达〜76。响应和恢复时间非常短。简单演示了该设备用于快速图像识别的实际应用，这显示出实现人工视网膜的潜力。这项工作可以促进可穿戴柔性电子设备的发展，并扩大可穿戴电子设备的市场份额。