A flexible and stretchable photonic crystal sensor for biosensing and tactile sensing
Wang Peng,
Bing Huang,
Xuanxuan Huang,
Han Song,
Qingxi Liao
Affiliations
Wang Peng
College of Engineering, Huazhong Agricultural University, Wuhan, 430070, China; Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, 518000, China; Shenzhen Institute of Nutrition and Health, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Agricultural Equipment in Mid-Lower Yangtze River, Ministry of Agriculture and Rural Affairs, Wuhan, 430070, China; Corresponding authors at: College of Engineering, Huazhong Agricultural University, Wuhan, 430070, China.
Bing Huang
Technical office, No. 78170 factory, Chengdu, 610504, China
Xuanxuan Huang
College of Engineering, Huazhong Agricultural University, Wuhan, 430070, China
Han Song
School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China
Qingxi Liao
College of Engineering, Huazhong Agricultural University, Wuhan, 430070, China; Key Laboratory of Agricultural Equipment in Mid-Lower Yangtze River, Ministry of Agriculture and Rural Affairs, Wuhan, 430070, China; Corresponding authors at: College of Engineering, Huazhong Agricultural University, Wuhan, 430070, China.
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.
