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<p>Flexible pressure sensors show significant potential for applications in the fields of intelligent wearable devices, electronic skins, and health monitoring. However, the fast response saturation and high viscoelasticity of the flexible sensing materials often result in reduced sensitivity and increased response hysteresis, limiting the practical application of these sensors. Therefore, achieving flexible pressure sensors with both high sensitivity and wide detection range still remains great challenges. In this study, bioinspired by the forcesensitive sensing mechanism and physiological structure of human skin, we propose a low-cost flexible fabrication method for high-performance piezoresistive flexible pressure sensor based on graphene/polydimethylsiloxane (PDMS) composite materials. The results show that the sensor has an ultra-high sensitivity (321 kPa<sup>−1</sup>), wide detection range (0.01–1000 kPa), fast response time (29 ms), and exhibits stability over 5000 cycles. In addition, the successful detections and applications indicate the wide application prospect of the developed sensor in fields of health monitoring, human-machine interactions and intelligent robotic perception.</p>

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Bioinspired fabrication of graphene/PDMS composite materials for high-performance flexible pressure sensor

  • 期刊论文

  • 发表日期：

    2025年3月11日

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  • Dandan Xu,
  • Peilin Zhou,
  • Haibo Yu,
  • Jianhang Chen,
  • Ya Zhong,
  • Hongji Guo,
  • Xiuli Zhang,
  • Yueqing Xia,
  • Guangrui Xiang,
  • Lianqing Liu

摘要

Flexible pressure sensors show significant potential for applications in the fields of intelligent wearable devices, electronic skins, and health monitoring. However, the fast response saturation and high viscoelasticity of the flexible sensing materials often result in reduced sensitivity and increased response hysteresis, limiting the practical application of these sensors. Therefore, achieving flexible pressure sensors with both high sensitivity and wide detection range still remains great challenges. In this study, bioinspired by the forcesensitive sensing mechanism and physiological structure of human skin, we propose a low-cost flexible fabrication method for high-performance piezoresistive flexible pressure sensor based on graphene/polydimethylsiloxane (PDMS) composite materials. The results show that the sensor has an ultra-high sensitivity (321 kPa−1), wide detection range (0.01–1000 kPa), fast response time (29 ms), and exhibits stability over 5000 cycles. In addition, the successful detections and applications indicate the wide application prospect of the developed sensor in fields of health monitoring, human-machine interactions and intelligent robotic perception.