Nano-Micro Letters, Volume. 16, Issue 1, 026(2024)

A Selective-Response Hypersensitive Bio-Inspired Strain Sensor Enabled by Hysteresis Effect and Parallel Through-Slits Structures

Qun Wang1... Zhongwen Yao1, Changchao Zhang1, Honglie Song1, Hanliang Ding1, Bo Li1,2,*, Shichao Niu1,2,**, Xinguan Huang3, Chuanhai Chen3, Zhiwu Han1,2,***, and Luquan Ren12 |Show fewer author(s)
Author Affiliations
  • 1Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun, Jilin 130022, People’s Republic of China
  • 2Liaoning Academy of Materials, Liaoning, Shenyang 110167, People’s Republic of China
  • 3Key Laboratory of CNC Equipment Reliability (Ministry of Education), Jilin University, Changchun, Jilin 130022, People’s Republic of China
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    Flexible strain sensors are promising in sensing minuscule mechanical signals, and thereby widely used in various advanced fields. However, the effective 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 conductive monolayer graphene and viscoelastic styrene–isoprene–styrene block copolymer. Under the synergistic effect of the bio-inspired slit structures and flexible viscoelastic 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 different 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.

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    Qun Wang, Zhongwen Yao, Changchao Zhang, Honglie Song, Hanliang Ding, Bo Li, Shichao Niu, Xinguan Huang, Chuanhai Chen, Zhiwu Han, Luquan Ren. A Selective-Response Hypersensitive Bio-Inspired Strain Sensor Enabled by Hysteresis Effect and Parallel Through-Slits Structures[J]. Nano-Micro Letters, 2024, 16(1): 026

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    Paper Information

    Category: Research Articles

    Received: Jun. 30, 2023

    Accepted: Oct. 19, 2023

    Published Online: Jan. 23, 2025

    The Author Email: Li Bo (boli@jlu.edu.cn), Niu Shichao (niushichao@jlu.edu.cn), Han Zhiwu (zwhan@jlu.edu.cn)

    DOI:10.1007/s40820-023-01250-y

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