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Nano Research

Article Title

Photo-thermoelectric effect induced electricity in stretchable graphene-polymer nanocomposites for ultrasensitive strain sensing

Authors

Ding Zhang, CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Yiding Song, CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Lu Ping, CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
Suwen Xu, CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
De Yang, Department of Neurology, Fuling Center Hospital of Chongqing City, Chongqing 408000, China
Yuanhao Wang, Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
Ya Yang, CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, China School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, China Center on Nanoenergy Research, School of Physical Science and Technology, Guangxi University, Nanning 530004, China

Keywords

graphene-polymer nanocomposites, photo-thermoelectric effect, strain sensor, stretchable, implantable

Abstract

Stretchable strain sensors play an increasingly important role in artificial intelligent devices. However, high-performance strain sensors have been slowly developed owing to the harsh requirement of self-powered function, long cycle life and high resolution. Here, we report a self-powered stretchable graphene-ecoflex composite strain sensor based on photo-thermoelectric (PTE) effect induced electricity. The device exhibits a high strain sensitivity of −0.056 ln(nA)/% with strains ranged from 0% to 20% under 980 nm light illumination, where the strain sensitivity can be found to increase with increasing light intensity. The strain sensor maintains outstanding dynamic stability under periodic strains ranged from 0 to 100% in 100 cycles. The sensing resolution can be as high as 0.5% with both the response and recovery time of less than 0.6 s. It can precisely monitor human joint motions and stretchable strains by implanting the device in pork.

Graphical Abstract

Publisher

Tsinghua University Press

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