

FOLLOWUS
a.Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, School of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China
b.Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, College of Materials and Chemical Engineering, Hezhou University, Hezhou 542899, China
c.Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong 999077, China
zhh@gxu.edu.cn
Received:23 October 2022,
Revised:2022-11-14,
Accepted:15 November 2022,
Online First:01 December 2022,
Published:01 July 2023
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Lu, C. C.; Gao, W. C.; Li, P.; Wu, W.; Li, R. K. Y.; Zhao, H. Utilizing multilayer design of organic-inorganic hybrids to enhance wearable strain sensor in humid environment. Chinese J. Polym. Sci. 2023, 41, 1037–1050
Chen-Chen Lu, Wei-Chen Gao, Peng Li, et al. Utilizing Multilayer Design of Organic-Inorganic Hybrids to Enhance Wearable Strain Sensor in Humid Environment[J]. Chinese Journal of Polymer Science, 2023, 41(7): 1037-1050.
Lu, C. C.; Gao, W. C.; Li, P.; Wu, W.; Li, R. K. Y.; Zhao, H. Utilizing multilayer design of organic-inorganic hybrids to enhance wearable strain sensor in humid environment. Chinese J. Polym. Sci. 2023, 41, 1037–1050 DOI: 10.1007/s10118-023-2905-7.
Chen-Chen Lu, Wei-Chen Gao, Peng Li, et al. Utilizing Multilayer Design of Organic-Inorganic Hybrids to Enhance Wearable Strain Sensor in Humid Environment[J]. Chinese Journal of Polymer Science, 2023, 41(7): 1037-1050. DOI: 10.1007/s10118-023-2905-7.
This work presents a design idea of a wearable flexible strain sensor with superhydrophobicity for human motion monitoring. The sensor can maintain its excellent sensing performance even in extremely humid environments.
Flexible strain wearable sensors have attracted considerable attention due to their advantages of low cost
lightweight
high sensitivity and good flexibility. However
the strain sensors are easy to be damaged in an extreme humidity environment or by the wearer's sweat in the process of use
resulting in detection disorder or even a short circuit. Furthermore
preparation of sensors with stable properties under extreme environments is one of the most important research directions. To fill this gap
a flexible sensor was prepared by using polyurethane and carbon nanotubes
then modified by polydopamine and 1
H
1
H
2
H
2
H
-perfluorodecane-mercaptan. A typical tunnel model was used to explain the working mechanism of the sensor
the sensitivity of the sensor is also explained and evaluated by the tunneling theory. The results show that the sensor has good sensitivity (the sensor has a stable sensing signal output under a strain range from 2% to 300%) and stability over 8500 cycles. At the same time
the sensor has good superhydrophobicity
the water contact angle reaches 152°
and it is still stable in a humid environment. Moreover
this sensor shows excellent performance in monitoring human joint motion (such as finger
elbow
wrist and knee) and physiological signals (such as speaking and drinking). This work provides an effective design method for the sensor which can be applied in a high humidity environment.
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