TY - JOUR
T1 - Hierarchically Structured Vertical Gold Nanowire Array-Based Wearable Pressure Sensors for Wireless Health Monitoring
AU - Zhu, Bowen
AU - Ling, Yunzhi
AU - Yap, Lim Wei
AU - Yang, Mingjie
AU - Lin, Fenge
AU - Gong, Shu
AU - Wang, Yan
AU - An, Tiance
AU - Zhao, Yunmeng
AU - Cheng, Wenlong
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/8/14
Y1 - 2019/8/14
N2 - We have recently demonstrated that vertically aligned gold nanowires (v-AuNWs) are outstanding material candidates for wearable biomedical sensors toward real-time and noninvasive health monitoring because of their excellent tunable electrical conductivity, biocompatibility, chemical inertness, and wide electrochemical window. Here, we show that v-AuNWs could also be used to design a high-performance wearable pressure sensor when combined with rational structural engineering such as pyramid microarray-based hierarchical structures. The as-fabricated pressure sensor featured a low operation voltage of 0.1 V, high sensitivity in a low-pressure regime, a fast response time of <10 ms, and high durability with stable signals for the 10 000 cycling test. In conjunction with printed electrode arrays, we could generate a multiaxial map for spatial pressure detection. Furthermore, our flexible pressure sensor could be seamlessly connected with a Bluetooth low-energy module to detect high-quality artery pulses in a wireless manner. Our solution-based gold coating strategy offers the benefit of conformal coating of nanowires onto three-dimensional microstructured elastomeric substrates under ambient conditions, indicating promising applications in next-generation wearable biodiagnostics.
AB - We have recently demonstrated that vertically aligned gold nanowires (v-AuNWs) are outstanding material candidates for wearable biomedical sensors toward real-time and noninvasive health monitoring because of their excellent tunable electrical conductivity, biocompatibility, chemical inertness, and wide electrochemical window. Here, we show that v-AuNWs could also be used to design a high-performance wearable pressure sensor when combined with rational structural engineering such as pyramid microarray-based hierarchical structures. The as-fabricated pressure sensor featured a low operation voltage of 0.1 V, high sensitivity in a low-pressure regime, a fast response time of <10 ms, and high durability with stable signals for the 10 000 cycling test. In conjunction with printed electrode arrays, we could generate a multiaxial map for spatial pressure detection. Furthermore, our flexible pressure sensor could be seamlessly connected with a Bluetooth low-energy module to detect high-quality artery pulses in a wireless manner. Our solution-based gold coating strategy offers the benefit of conformal coating of nanowires onto three-dimensional microstructured elastomeric substrates under ambient conditions, indicating promising applications in next-generation wearable biodiagnostics.
KW - health monitoring
KW - hierarchical structures
KW - pressure sensors
KW - vertical gold nanowires
KW - wireless sensing
UR - http://www.scopus.com/inward/record.url?scp=85071352655&partnerID=8YFLogxK
U2 - 10.1021/acsami.9b06260
DO - 10.1021/acsami.9b06260
M3 - 文章
C2 - 31322334
AN - SCOPUS:85071352655
SN - 1944-8244
VL - 11
SP - 29014
EP - 29021
JO - ACS applied materials & interfaces
JF - ACS applied materials & interfaces
IS - 32
ER -