3 years ago

Ultrafast Dynamic Pressure Sensors Based on Graphene Hybrid Structure

Ultrafast Dynamic Pressure Sensors Based on Graphene Hybrid Structure
Xiaofeng Zhou, Congwei Guo, Shanbiao Liu, Hejun Xu, Jian Zhang, Junhao Chu, Xinming Li, Dongdong Zhang, Xing Wu, Peng Wang, Chen Luo, Weida Hu
Mechanical flexible electronic skin has been focused on sensing various physical parameters, such as pressure and temperature. The studies of material design and array-accessible devices are the building blocks of strain sensors for subtle pressure sensing. Here, we report a new and facile preparation of a graphene hybrid structure with an ultrafast dynamic pressure response. Graphene oxide nanosheets are used as a surfactant to prevent graphene restacking in aqueous solution. This graphene hybrid structure exhibits a frequency-independent pressure resistive sensing property. Exceeding natural skin, such pressure sensors, can provide transient responses from static up to 10 000 Hz dynamic frequencies. Integrated by the controlling system, the array-accessible sensors can manipulate a robot arm and self-rectify the temperature of a heating blanket. This may pave a path toward the future application of graphene-based wearable electronics.

Publisher URL: http://dx.doi.org/10.1021/acsami.7b07311

DOI: 10.1021/acsami.7b07311

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