TY - JOUR
T1 - Enhanced electromechanical resilience and mechanism of the composites-coated fabric sensors with crack-induced conductive network for wearable applications
AU - Wang, Xi
AU - Li, Qiao
AU - Tao, Xiaoming
N1 - Funding Information:
This research was funded by the National Natural Science Foundation of China (Grant Nos. 12002085, 51603039), sponsored by Shanghai Pujiang Program, and supported by the Fundamental Research Funds for the Central Universities, the Key Laboratory of Textile Science and Technology (Donghua University), Ministry of Education, as well as the Initial Research Funds for Young Teachers of Donghua University.
Publisher Copyright:
© 2022 IOP Publishing Ltd.
PY - 2022/3
Y1 - 2022/3
N2 - Conductive composites-coated fabric sensors are favorable sensing elements for wearable applications. However, rheology of composites ingredients has been causing inaccuracy due to high hysteresis and low instantaneity in real-time measurements. To address this problem, a composites-coated fabric-based strain sensor was fabricated and studied. A physical pretreatment scheme was designed to produce cracked surface morphology on the conductive composites film, yielding a stable conductive network. Results showed that this scheme can significantly lower the electrical hysteresis of the sensors by about 35% and effectively reduce electrical and mechanical relaxation, hence notably improved electromechanical resilience of the sensors. It is also found that the linear strain-resistance property of the sensors was largely retained after pretreatment. Sensing mechanism of the cracked sensors was further derived to understand the results. Through all the observations and application prospect demonstrated by two sensing belts, it is suggested that cracking can be considered to improve sensing performance for other coated fabric flexible sensors.
AB - Conductive composites-coated fabric sensors are favorable sensing elements for wearable applications. However, rheology of composites ingredients has been causing inaccuracy due to high hysteresis and low instantaneity in real-time measurements. To address this problem, a composites-coated fabric-based strain sensor was fabricated and studied. A physical pretreatment scheme was designed to produce cracked surface morphology on the conductive composites film, yielding a stable conductive network. Results showed that this scheme can significantly lower the electrical hysteresis of the sensors by about 35% and effectively reduce electrical and mechanical relaxation, hence notably improved electromechanical resilience of the sensors. It is also found that the linear strain-resistance property of the sensors was largely retained after pretreatment. Sensing mechanism of the cracked sensors was further derived to understand the results. Through all the observations and application prospect demonstrated by two sensing belts, it is suggested that cracking can be considered to improve sensing performance for other coated fabric flexible sensors.
KW - coated fabric strain sensor
KW - conductive composites
KW - electromechanical resilience
KW - sensing mechanism
KW - wearable application
UR - http://www.scopus.com/inward/record.url?scp=85125466397&partnerID=8YFLogxK
U2 - 10.1088/1361-665X/ac50f3
DO - 10.1088/1361-665X/ac50f3
M3 - Journal article
AN - SCOPUS:85125466397
SN - 0964-1726
VL - 31
JO - Smart Materials and Structures
JF - Smart Materials and Structures
IS - 3
M1 - 035032
ER -