A reflective metasurface model composed of silver dendritic units is designed in this study. The integral property of this metasurface, which consists of an upper layer of dendritic structures, a silica spacer, and a bottom silver substrate was demonstrated at visible wavelengths. The simulation results revealed that the metasurface can perform integral operation in the yellow and red bands; this can be easily generalized to the infrared and communication bands by scaling the transverse dimensions of this metasurface. A dendritic metasurface sample responding to red light was prepared via the bottom-up electrochemical deposition method. The integral operation property of the sample was verified experimentally. This dendritic metasurface, which can perform integral operation in visible light, can be used for big data processing technology, real-time signal processing, and beam shaping, and provides a new method for miniaturized and integrated all-optical signal processing systems.

中文翻译：

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用于可见光整体操作的准周期性树突超表面

本研究设计了由银枝晶单元组成的反射超表面模型。这种由上层树枝状结构、二氧化硅间隔物和底部银基板组成的超表面的整体特性在可见光波长下得到了证明。仿真结果表明，超曲面可以在黄色和红色波段进行积分运算；通过缩放这个超表面的横向尺寸，这可以很容易地推广到红外和通信波段。通过自下而上的电化学沉积方法制备了响应红光的树枝状超表面样品。通过实验验证了样品的积分运算特性。这种可在可见光下进行积分运算的树突超表面可用于大数据处理技术，