Color contact lenses attracts considerable attention for vision management and cosmetic applications nowadays. However, they require a wired power supply system because positive and negative voltages need to be applied for color modulation of electrochromic coating on the lens. This study demonstrates a wireless-powered electrochromic soft contact lens that modulates color using a dual-band wireless power transfer (WPT) system. The stretchable and conductive electrochromic film is the result of fabrication by spin-coating a mixed solution comprising PEDOT:PSS for the electrical conductor, polyurethane for the stretchable supportive layer, ethylene glycol, and dodecylbenzene sulfonic acid as conductivity enhancers. The dual-band system for negative voltage at 13.56 MHz and positive voltage at 28.4 MHz consists of two resonators using semi-loop antennas connected in parallel with capacitors. The dual-band resonators and electrochromic films are electrochemically bonded onto a commercially available soft contact lens. The proposed lens is capable of reversibly and wirelessly modulating the color from transparent to dark blue for several tens of seconds and usable as wireless color filters and Morse code transmitters.

如今，彩色隐形眼镜在视觉管理和美容应用方面引起了相当大的关注。但是，它们需要有线供电系统，因为需要施加正负电压来对镜片上的电致变色涂层进行颜色调制。本研究展示了一种无线供电的电致变色软性隐形眼镜，该隐形眼镜使用双波段无线电力传输 (WPT) 系统调节颜色。可拉伸且导电的电致变色薄膜是通过旋涂混合溶液制造的结果，该混合溶液包含用于电导体的PEDOT:PSS、用于可拉伸支撑层的聚氨酯、乙二醇和作为导电增强剂的十二烷基苯磺酸。负电压为 13.56 MHz，正电压为 28 的双频系统。4 MHz 由两个使用与电容器并联的半环形天线的谐振器组成。双波段谐振器和电致变色薄膜以电化学方式结合到市售的软性隐形眼镜上。所提出的镜头能够在数十秒内可逆地无线调制从透明到深蓝色的颜色，并可用作无线滤色器和摩尔斯电码发射器。