TY - JOUR
T1 - Highly sensitive and wearable capacitive pressure sensors based on PVDF/BaTiO3 composite fibers on PDMS microcylindrical structures
AU - Yang, Chii Rong
AU - Lin, Ming Feng
AU - Huang, Chun Kai
AU - Huang, Wei Chia
AU - Tseng, Shih Feng
AU - Chiang, Hsin Han
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/10
Y1 - 2022/10
N2 - This study developed a novel high-sensitivity flexible capacitive pressure sensor by combining BaTiO3-doped polyvinylidene fluoride electrospinning fibers and polydimethylsiloxane microcylindrical structures as the dielectric layer. The flexible electrode formed by the graphene/PI film was assembled into a flexible capacitive pressure sensor, and formed a sandwich-like structure. The proposed sensor could obtain more capacitance variations and improve its sensitivity through composite deformation of electrospinning fiber and microcylindrical structure under pressure. The developed flexible capacitive pressure sensor has a high sensitivity of 5 kPa−1, fast response and release time of 25 and 50 ms, ultralow detection limit of 0.11 Pa, and more than 10000- and 5000-times compressions/bending cycling test without any signal attenuation for the high durability and high reliability. The results of this study proved that the sensors have excellent performance, and can be applied on wearable devices for human pulse monitoring and acoustic detection.
AB - This study developed a novel high-sensitivity flexible capacitive pressure sensor by combining BaTiO3-doped polyvinylidene fluoride electrospinning fibers and polydimethylsiloxane microcylindrical structures as the dielectric layer. The flexible electrode formed by the graphene/PI film was assembled into a flexible capacitive pressure sensor, and formed a sandwich-like structure. The proposed sensor could obtain more capacitance variations and improve its sensitivity through composite deformation of electrospinning fiber and microcylindrical structure under pressure. The developed flexible capacitive pressure sensor has a high sensitivity of 5 kPa−1, fast response and release time of 25 and 50 ms, ultralow detection limit of 0.11 Pa, and more than 10000- and 5000-times compressions/bending cycling test without any signal attenuation for the high durability and high reliability. The results of this study proved that the sensors have excellent performance, and can be applied on wearable devices for human pulse monitoring and acoustic detection.
KW - Electronic skin system
KW - Electrospinning fiber
KW - Flexible capacitive pressure sensor
KW - Human-machine collaboration
KW - Microcylindrical structure
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U2 - 10.1016/j.measurement.2022.111817
DO - 10.1016/j.measurement.2022.111817
M3 - Article
AN - SCOPUS:85138441335
SN - 0263-2241
VL - 202
JO - Measurement: Journal of the International Measurement Confederation
JF - Measurement: Journal of the International Measurement Confederation
M1 - 111817
ER -