TY - JOUR
T1 - All-Fabric Ultrathin Capacitive Sensor with High Pressure Sensitivity and Broad Detection Range for Electronic Skin
AU - Yu, Pengtao
AU - Li, Xin
AU - Li, Huayang
AU - Fan, Youjun
AU - Cao, Jinwei
AU - Wang, Hailu
AU - Guo, Zihao
AU - Zhao, Xuejiao
AU - Wang, Zhonglin
AU - Zhu, Guang
N1 - Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/5/26
Y1 - 2021/5/26
N2 - Flexible pressure sensors have emerged as an indispensable part of wearable devices due to their application in physiological activity monitoring. To realize long-term on-body service, they are increasingly required for properties of conformability, air permeability, and durability. However, the enhancement of sensitivity remains a challenge for ultrathin capacitive sensors, particularly in the low-pressure region. Here, we introduced a highly sensitive and ultrathin capacitive pressure sensor based on a breathable all-fabric network with a micropatterned nanofiber dielectric layer, an all-fabric capacitive sensor (AFCS). This all-fabric network endows a series of exceptional performances, such as high sensitivity (8.31 kPa-1 under 1 kPa), ultralow detection limit (0.5 Pa), wide detection range (0.5 Pa to 80 kPa), and excellent robustness (10 000 dynamic cycles). Besides, the all-fabric structure provides other properties for the AFCS, e.g., high skin conformability, super thinness (dozens of micrometers), and exceptional air permeability. Our AFCS shows promising potential in breathing track, muscle activity detection, fingertip pressure monitoring, and spatial pressure distribution, paving way for comfortable skinlike epidermal electronics.
AB - Flexible pressure sensors have emerged as an indispensable part of wearable devices due to their application in physiological activity monitoring. To realize long-term on-body service, they are increasingly required for properties of conformability, air permeability, and durability. However, the enhancement of sensitivity remains a challenge for ultrathin capacitive sensors, particularly in the low-pressure region. Here, we introduced a highly sensitive and ultrathin capacitive pressure sensor based on a breathable all-fabric network with a micropatterned nanofiber dielectric layer, an all-fabric capacitive sensor (AFCS). This all-fabric network endows a series of exceptional performances, such as high sensitivity (8.31 kPa-1 under 1 kPa), ultralow detection limit (0.5 Pa), wide detection range (0.5 Pa to 80 kPa), and excellent robustness (10 000 dynamic cycles). Besides, the all-fabric structure provides other properties for the AFCS, e.g., high skin conformability, super thinness (dozens of micrometers), and exceptional air permeability. Our AFCS shows promising potential in breathing track, muscle activity detection, fingertip pressure monitoring, and spatial pressure distribution, paving way for comfortable skinlike epidermal electronics.
KW - all-fabric structure
KW - capacitive effect
KW - flexible ultrathin sensors
KW - high sensitivity
UR - http://www.scopus.com/inward/record.url?scp=85106362590&partnerID=8YFLogxK
U2 - 10.1021/acsami.1c05478
DO - 10.1021/acsami.1c05478
M3 - Article
C2 - 33977715
AN - SCOPUS:85106362590
SN - 1944-8244
VL - 13
SP - 24062
EP - 24069
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 20
ER -