Flexible, Highly Sensitive, and Wearable Pressure and Strain Sensors with Graphene Porous Network Structure.
A mechanical sensor with graphene porous network (GPN) combined with polydimethylsiloxane (PDMS) is demonstrated by the first time. Using the nickel foam as template and chemically etching method, the GPN can be created in the PDMS-nickel foam coated with graphene, which can achieve both pressure and strain sensing properties. Because of the pores in the GPN, the composite as pressure and strain sensor exhibit wide pressure sensing range and highest sensitivity among the graphene foam-based sensors, respectively. In addition, it shows potential applications in monitoring or even recognize the walking states, finger bending degree, and wrist blood pressure.
Institute of Microelectronics, Tsinghua University , 100084 Beijing, China.
Yu
Y
Pang
Ming Hsieh Department of Electrical Engineering, University of Southern California , Los Angeles, California 90089, United States.
He
H
Tian
Institute of Microelectronics, Tsinghua University , 100084 Beijing, China.
Luqi
L
Tao
Institute of Microelectronics, Tsinghua University , 100084 Beijing, China.
Yuxing
Y
Li
Institute of Microelectronics, Tsinghua University , 100084 Beijing, China.
Xuefeng
X
Wang
Institute of Microelectronics, Tsinghua University , 100084 Beijing, China.
Ningqin
N
Deng
Institute of Microelectronics, Tsinghua University , 100084 Beijing, China.
Yi
Y
Yang
Institute of Microelectronics, Tsinghua University , 100084 Beijing, China.
Tian-Ling
TL
Ren
graphene network; piezoresistivity; porous structure; pressure sensor; strain sensor