Eye accommodation-inspired neuro-metasurface focusing

Huan Lu, Jiwei Zhao, Bin Zheng (), Chao Qian (), Tong Cai (), Erping Li and Hongsheng Chen ()
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Huan Lu: Zhejiang University
Jiwei Zhao: Nanjing University
Bin Zheng: Zhejiang University
Chao Qian: Zhejiang University
Tong Cai: Zhejiang University
Erping Li: Zhejiang University
Hongsheng Chen: Zhejiang University

Nature Communications, 2023, vol. 14, issue 1, 1-7

Abstract: Abstract The human eye, which relies on a flexible and controllable lens to focus light onto the retina, has inspired many scientific researchers to understand better and imitate the biological vision system. However, real-time environmental adaptability presents an enormous challenge for artificial eye-like focusing systems. Inspired by the mechanism of eye accommodation, we propose a supervised-evolving learning algorithm and design a neuro-metasurface focusing system. Driven by on-site learning, the system exhibits a rapid response to ever-changing incident waves and surrounding environments without any human intervention. Adaptive focusing is achieved in several scenarios with multiple incident wave sources and scattering obstacles. Our work demonstrates the unprecedented potential for real-time, fast, and complex electromagnetic (EM) wave manipulation for various purposes, such as achromatic, beam shaping, 6 G communication, and intelligent imaging.

Date: 2023
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DOI: 10.1038/s41467-023-39070-8

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