A Selective-Response Hypersensitive Bio-Inspired Strain Sensor Enabled by Hysteresis Effect and Parallel Through-Slits StructuresOACSTPCD
A Selective-Response Hypersensitive Bio-Inspired Strain Sensor Enabled by Hysteresis Effect and Parallel Through-Slits Structures
Flexible strain sensors are promising in sensing minuscule mechani-cal signals,and thereby widely used in various advanced fields.However,the effec-tive integration of hypersensitivity and highly selective response into one flexible strain sensor remains a huge challenge.Herein,inspired by the hysteresis strategy of the scorpion slit receptor,a bio-inspired flexible strain sensor(BFSS)with parallel through-slit arrays is designed and fabricated.Specifically,BFSS consists of conduc-tive monolayer graphene and viscoelastic styrene-isoprene-styrene block copolymer.Under the synergistic effect of the bio-inspired slit structures and flexible viscoelas-tic materials.BFSS can achieve both hypersensitivity and highly selective frequency response.Remarkably,the BFSS exhibits a high gage factor of 657.36,and a precise identification of vibration frequencies at a resolution of 0.2 Hz through undergoing dif-ferent morphological changes to high-frequency vibration and low-frequency vibration.Moreover,the BFSS possesses a wide frequency detection range(103 Hz)and stable durability(1000 cycles).It can sense and recognize vibration signals with different characteristics,including the frequency,amplitude,and waveform.This work,which turns the hysteresis effect into a"treasure,"can provide new design ideas for sensors for potential applications including human-computer interaction and health monitoring of mechanical equipment.
Qun Wang;Zhiwu Han;Luquan Ren;Zhongwen Yao;Changchao Zhang;Honglie Song;Hanliang Ding;Bo Li;Shichao Niu;Xinguan Huang;Chuanhai Chen
Key Laboratory of Bionic Engineering(Ministry of Education),Jilin University,Changchun,Jilin 130022,People's Republic of ChinaKey Laboratory of Bionic Engineering(Ministry of Education),Jilin University,Changchun,Jilin 130022,People's Republic of China||Liaoning Academy of Materials,Liaoning,Shenyang 110167,People's Republic of ChinaKey Laboratory of CNC Equipment Reliability(Ministry of Education),Jilin University,Changchun,Jilin 130022,People's Republic of China
Bio-inspired strain sensorsHysteresis effectHypersensitivitySelective frequency responseHealth monitoring applications
《纳微快报（英文）》 2024 (002)
139-153 / 15
Acknowledgments This work was supported by the Foundation for Innovative Research Groups of the National Natural Science Foundation of China(Grant No.52021003),National Natural Sci-ence Foundation of China(Grant No.51835006),the National Natural Science Foundation of China(Grant Nos.52222509,52105301,U19A20103),Jilin University Science and Technol-ogy Innovative Research Team(Grant No.2020TD-03),Interdis-ciplinary Integration and Innovation Project of JLU(Grant No.JLUXKJC2021ZZ03),the Natural Science Foundation of Jilin Province(Grant No.20220101220JC),Education Department of Jilin Province(Grant No.JJKH20220979KJ),Graduate Innovation Fund of Jilin University(2023CX077),and supported by"Funda-mental Research Funds for the Central Universities."Open access funding provided by Shanghai Jiao Tong University.
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