Wireless, Highly Sensitive and Diagnostic Contact Lens Sensors

Health monitoring electric lenses include wireless biosensors that monitor biological signals in human diagnostics and wirelessly transfer the information to a receiver. In general, such wireless systems consist of in-parallel and/or in-series connection with a loop antenna inductor (L), a resistance (R), and a miniaturized ceramic capacitor (C) to resonate at a target frequency between transmitter/receiver circuits. However, conventional LCR resonator circuits make several problems such as low efficiency and short distance, so LCR-based wireless biosensors require the detection in high accuracy and practical use. Here we developed a prototype of a highly sensitive diagnostic contact lens with high sensitive biosensors and high efficient wireless transfer systems. [1-2]<br/>[1]. Takamatsu, T.; Chen, Y.; Yoshimasu, T.; Nishizawa, M.; Miyake, T. Highly Efficient, Flexible Wireless Powered Circuit Printed on a Moist, Soft Contact Lens. Adv. Mater. Technol. 2019, 4.<br/>[2]. Takamatsu, T.; Sijie, Y.; Shujie, F.; Xiaohan, L.; Miyake, T. Multifunctional High Power Sources for Smart Contact Lenses. Adv. Funct. Mater. 2020, 30, 1906225.