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Synthesis of atomically thin GaSe wrinkles for strain sensors

Abstract

A wrinkle-based thin-film device can be used to develop optoelectronic devices, photovoltaics, and strain sensors. Here, we propose a stable and ultrasensitive strain sensor based on two-dimensional (2D) semiconducting gallium selenide (GaSe) for the first time. The response of the electrical resistance to strain was demonstrated to be very sensitive for the GaSe-based strain sensor, and it reached a gauge factor of–4.3, which is better than that of graphene-based strain sensors. The results show us that strain engineering on a nanoscale can be used not only in strain sensors but also for a wide range of applications, such as flexible field-effect transistors, stretchable electrodes, and flexible solar cells.

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Correspondence to Xin-Zheng Zhang or Qian Liu.

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Wang, C., Yang, SX., Zhang, HR. et al. Synthesis of atomically thin GaSe wrinkles for strain sensors. Front. Phys. 11, 116802 (2016). https://doi.org/10.1007/s11467-015-0522-9

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  • DOI: https://doi.org/10.1007/s11467-015-0522-9

Keywords

  • GaSe wrinkles
  • strain sensor