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

被引：8
作者：
Peng, Wang [1 ,2 ,3 ,4 ]
Huang, Bing [5 ]
Huang, Xuanxuan [1 ]
Song, Han [6 ]
Liao, Qingxi [1 ,4 ]
机构：
[1] Huazhong Agr Univ, Coll Engn, Wuhan 430070, Peoples R China
[2] Chinese Acad Agr Sci, Shenzhen Branch, Guangdong Lab Lingnan Modern Agr, Genome Anal Lab,Minist Agr,Agr Genom Inst Shenzhe, Shenzhen 518000, Peoples R China
[3] Huazhong Agr Univ, Shenzhen Inst Nutr & Hlth, Wuhan 430070, Peoples R China
[4] Minist Agr & Rural Affairs, Key Lab Agr Equipment Midlower Yangtze River, Wuhan 430070, Peoples R China
[5] Tech Off, 78170 Factory, Chengdu 610504, Peoples R China
[6] Wuhan Univ Technol, Sch Mech & Elect Engn, Wuhan 430070, Peoples R China
来源：
HELIYON | 2022年 / 8卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Flexible and stretchable photonic crystal; Tactile sensing; Biosensing; Nanoreplica molding; PEROVSKITE; NANOCAVITY;
D O I：
10.1016/j.heliyon.2022.e11697
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
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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页数：8
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