A flexible and stretchable photonic crystal sensor for biosensing and tactile sensing

文献类型： 外文期刊

第一作者： Peng, Wang

作者： Peng, Wang;Huang, Xuanxuan;Liao, Qingxi;Peng, Wang;Peng, Wang;Peng, Wang;Liao, Qingxi;Huang, Bing;Song, Han

作者机构：

关键词： Flexible and stretchable photonic crystal; Tactile sensing; Biosensing; Nanoreplica molding

期刊名称：HELIYON （ 影响因子：4.0； 五年影响因子：4.1 ）

ISSN：

年卷期： 2022 年 8 卷 11 期

页码：

收录情况： SCI

摘要： Biosensing and tactile sensing are considered to be essential functions for intelligent diagnostic medical robot. In this paper, biosensing and tactile sensing had been demonstrated with a single photonic crystal structure. The flexible and stretchable photonic crystal structure consists of PDMS as the flexible substrate and TiO2 as the guided layer, and the nanograting structure was realized by nanoreplica molding. For biosensing experiment, a sensitivity of 93 nm/RIU is verified with ambient environment RI variance simulation results. For tactile sensing experiment, the highest resolution for strain sensing is 0.1%, and the minimum detected scale of the grating period variation is 0.1 nm. The TiO2/PDMS structure based flexible and stretchable photonic crystal sensor demonstrates highly sensitivity and potentially cost effective for biosensing and tactile sensing, and it is promising in the area of intelligent diagnostic medical robot.

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