Department of Biomedical Engineering, Fourth Military Medical University, Xi'an, China.
Fundamentals Department, Air Force Engineering University, Xi'an, China.
Nat Commun. 2024 Feb 22;15(1):1631. doi: 10.1038/s41467-024-45296-x.
Metasurfaces have exhibited unprecedented degree of freedom in manipulating electromagnetic (EM) waves and thus provide fantastic front-end interfaces for smart systems. Here we show a framework for perception enhancement based on vision-driven metasurface. Human's eye movements are matched with microwave radiations to extend the humans' perception spectrum. By this means, our eyes can "sense" visual information and invisible microwave information. Several experimental demonstrations are given for specific implementations, including a physiological-signal-monitoring system, an "X-ray-glasses" system, a "glimpse-and-forget" tracking system and a speech reception system for deaf people. Both the simulation and experiment results verify evident advantages in perception enhancement effects and improving information acquisition efficiency. This framework can be readily integrated into healthcare systems to monitor physiological signals and to offer assistance for people with disabilities. This work provides an alternative framework for perception enhancement and may find wide applications in healthcare, wearable devices, search-and-rescue and others.
超表面在操控电磁波方面展现出了前所未有的自由度，从而为智能系统提供了极好的前端接口。在这里，我们展示了一种基于视觉驱动的超表面的感知增强框架。我们将人的眼球运动与微波辐射相匹配，以扩展人类的感知频谱。通过这种方式，我们的眼睛可以“感知”视觉信息和不可见的微波信息。针对具体实现，给出了几个实验演示，包括生理信号监测系统、“X 光眼镜”系统、“一看即忘”跟踪系统以及为失聪人士设计的语音接收系统。仿真和实验结果都验证了感知增强效果和提高信息获取效率方面的明显优势。该框架可以很容易地集成到医疗保健系统中，以监测生理信号并为残障人士提供帮助。这项工作为感知增强提供了一种替代框架，可能在医疗保健、可穿戴设备、搜索和救援等领域得到广泛应用。
