In insect eyes, ommatidia with hierarchical structured cornea play a critical role in amplifying and transferring visual signals to the brain through optic nerves, enabling the perception of various visual signals. Here, inspired by the structure and functions of insect ommatidia, a flexible photoimaging device is reported that can simultaneously detect and record incoming photonic signals by vertically stacking an organic photodiode and resistive memory device. A single‐layered, hierarchical multiple‐patterned back reflector that can exhibit various plasmonic effects is incorporated into the organic photodiode. The multiple‐patterned flexible organic photodiodes exhibit greatly enhanced photoresponsivity due to the increased light absorption in comparison with the flat systems. Moreover, the flexible photoimaging device shows a well‐resolved spatiotemporal mapping of optical signals with excellent operational and mechanical stabilities at low driving voltages below half of the flat systems. Theoretical calculation and scanning near‐field optical microscopy analyses clearly reveal that multiple‐patterned electrodes have much stronger surface plasmon coupling than flat and single‐patterned systems. The developed methodology provides a versatile and effective route for realizing high‐performance optoelectronic and photonic systems.

中文翻译：

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基于生物启发的多模式等离激元纳米结构的柔性高性能光成像设备

在昆虫的眼睛中，具有分层结构的角膜的眼病在通过视神经将视觉信号放大并传递到大脑中起着至关重要的作用，从而可以感知各种视觉信号。在这里，受昆虫眼病的结构和功能的启发，据报道，一种柔性的光成像设备可以通过垂直堆叠有机光电二极管和电阻存储设备同时检测和记录入射的光子信号。可以表现出各种等离子体效应的单层，多层，多图案的背反射器被并入有机光电二极管中。与平面系统相比，由于增加了光吸收，多图案的柔性有机光电二极管显示出大大增强的光响应性。而且，灵活的光成像设备显示了分辨率良好的光信号时空映射，在低于平坦系统一半的低驱动电压下具有出色的操作和机械稳定性。理论计算和扫描近场光学显微镜分析清楚地表明，多图案电极比平面和单图案系统具有更强的表面等离子体耦合。所开发的方法为实现高性能的光电和光子系统提供了一种通用且有效的途径。理论计算和扫描近场光学显微镜分析清楚地表明，多图案电极比平面和单图案系统具有更强的表面等离子体激元耦合。所开发的方法为实现高性能的光电和光子系统提供了一条通用且有效的途径。理论计算和扫描近场光学显微镜分析清楚地表明，多图案电极比平面和单图案系统具有更强的表面等离子体激元耦合。所开发的方法为实现高性能的光电和光子系统提供了一种通用且有效的途径。