TY - JOUR
T1 - Vertical Graphene Canal Mesh for Strain Sensing with a Supereminent Resolution
AU - Ma, Yifei
AU - Li, Zijian
AU - Han, Jiemin
AU - Li, Linhan
AU - Wang, Mei
AU - Tong, Zhaomin
AU - Suhr, Jonghwan
AU - Xiao, Liantuan
AU - Jia, Suotang
AU - Chen, Xuyuan
N1 - Publisher Copyright:
© 2022 American Chemical Society.
PY - 2022/7/20
Y1 - 2022/7/20
N2 - The development of microstrain sensors offers significant prospects in diverse applications, such as microrobots, intelligent human-computer interaction, health monitoring, and medical rehabilitation. Among strain sensor materials, vertical graphene (VG) has demonstrated considerable potential as a resistive material; however, VG-based strain sensors with high resolution are yet to be developed. In addition, the detection mechanism of VG has not been extensively investigated. Herein, we developed a VG canal mesh (VGCM) to fabricate a flexible strain sensor for ultralow strain sensing, achieving an accurate response to strains as low as 0.1‰ within a total strain range of 0%-4%. The detection of such low strains is due to the rigorous structural design and strain concentration effect of the three-dimensional micronano structure of the VGCM. Through experimental results and theoretical simulation, the evolution of microcracks in VG and the sensing mechanism of VG and VGCM are elaborated, and the unique advantages of VGCM are revealed. Finally, the VGCM-based strain sensors are proposed as portable breathing test equipment for rapid breathing detection.
AB - The development of microstrain sensors offers significant prospects in diverse applications, such as microrobots, intelligent human-computer interaction, health monitoring, and medical rehabilitation. Among strain sensor materials, vertical graphene (VG) has demonstrated considerable potential as a resistive material; however, VG-based strain sensors with high resolution are yet to be developed. In addition, the detection mechanism of VG has not been extensively investigated. Herein, we developed a VG canal mesh (VGCM) to fabricate a flexible strain sensor for ultralow strain sensing, achieving an accurate response to strains as low as 0.1‰ within a total strain range of 0%-4%. The detection of such low strains is due to the rigorous structural design and strain concentration effect of the three-dimensional micronano structure of the VGCM. Through experimental results and theoretical simulation, the evolution of microcracks in VG and the sensing mechanism of VG and VGCM are elaborated, and the unique advantages of VGCM are revealed. Finally, the VGCM-based strain sensors are proposed as portable breathing test equipment for rapid breathing detection.
KW - canal mesh
KW - concentration effect
KW - high resolution
KW - strain sensor
KW - vertical graphene
UR - https://www.scopus.com/pages/publications/85134854308
U2 - 10.1021/acsami.2c07658
DO - 10.1021/acsami.2c07658
M3 - Article
C2 - 35818991
AN - SCOPUS:85134854308
SN - 1944-8244
VL - 14
SP - 32387
EP - 32394
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 28
ER -