An Ultrasensitive, Durable and Stretchable Strain Sensor with Crack-wrinkle Structure for Human Motion Monitoring

Ze-Yu Li; Wei Zhai; Yun-Fei Yu; Guo-Jie Li; Peng-Fei Zhan; Jian-Wei Xu; Guo-Qiang Zheng; Kun Dai; Chun-Tai Liu; Chang-Yu Shen

doi:10.1007/s10118-021-2500-8

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An Ultrasensitive, Durable and Stretchable Strain Sensor with Crack-wrinkle Structure for Human Motion Monitoring

ARTICLE | Updated：2020-10-14

- An Ultrasensitive, Durable and Stretchable Strain Sensor with Crack-wrinkle Structure for Human Motion Monitoring
- Chinese Journal of Polymer Science Vol. 39, Issue 3, Pages: 316-326(2021)
- Affiliations：
  
  Key Laboratory of Materials Processing and Mold (Zhengzhou University), Ministry of Education, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
- Author bio：
  
  kundai@zzu.edu.cn (K.D.)
  ctliu@zzu.edu.cn (C.T.L.)
- Funds：
- DOI：10.1007/s10118-021-2500-8
  CLC：
- Received：13 July 2020，
  
  Revised：2020-8-9，
  
  Accepted：17 August 2020，
  
  Online First：14 October 2020，
  
  Published：02 January 2021
- Accepted：
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Li, Z. Y.; Zhai, W.; Yu, Y. F.; Li, G. J.; Zhan, P. F.; Xu, J. W.; Zheng, G. Q.; Dai, K.; Liu, C. T.; Shen, C. Y. An ultrasensitive, durable and stretchable strain sensor with crack-wrinkle structure for human motion monitoring. Chinese J. Polym. Sci. 2021, 39, 316–326

Ze-Yu Li, Wei Zhai, Yun-Fei Yu, et al. An Ultrasensitive, Durable and Stretchable Strain Sensor with Crack-wrinkle Structure for Human Motion Monitoring[J]. Chinese Journal of Polymer Science, 2021, 39(3): 316-326.
Li, Z. Y.; Zhai, W.; Yu, Y. F.; Li, G. J.; Zhan, P. F.; Xu, J. W.; Zheng, G. Q.; Dai, K.; Liu, C. T.; Shen, C. Y. An ultrasensitive, durable and stretchable strain sensor with crack-wrinkle structure for human motion monitoring. Chinese J. Polym. Sci. 2021, 39, 316–326 DOI： 10.1007/s10118-021-2500-8.

Ze-Yu Li, Wei Zhai, Yun-Fei Yu, et al. An Ultrasensitive, Durable and Stretchable Strain Sensor with Crack-wrinkle Structure for Human Motion Monitoring[J]. Chinese Journal of Polymer Science, 2021, 39(3): 316-326. DOI： 10.1007/s10118-021-2500-8.

摘要

Abstract

Flexible strain sensor has promising features in successful application of health monitoring

electronic skins and smart robotics

etc

. Here

we report an ultrasensitive strain sensor with a novel crack-wrinkle structure (CWS) based on graphite nanoplates (GNPs)/thermoplastic urethane (TPU)/polydimethylsiloxane (PDMS) nanocomposite. The CWS is constructed by pressing and dragging GNP layer on TPU substrate

followed by encapsulating with PDMS as a protective layer. On the basis of the area statistics

the ratio of the crack and wrinkle structures accounts for 31.8% and 9.5%

respectively. When the sensor is stretched

the cracks fracture

the wrinkles could reduce the unrecoverable destruction of cracks

resulting in an excellent recoverability and stability. Based on introduction of the designed CWS in the sensor

the hysteresis effect is limited effectively. The CWS sensor possesses a satisfactory sensitivity (GF=750 under 24% strain)

an ultralow detectable limit (strain=0.1%) and a short respond time of 90 ms. For the sensing service behaviors

the CWS sensor exhibits an ultrahigh durability (high stability

2×10

stretching-releasing cycles). The excellent practicality of CWS sensor is demonstrated through various human motion tests

including vigorous exercises of various joint bending

and subtle motions of phonation

facial movements and wrist pulse. The present CWS sensor shows great developing potential in the field of cost-effective

portable and high-performance electronic skins.

关键词

Keywords

references

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