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<p>Flexible electronics have advanced wearable health monitoring and wireless communication, yet their long-term deployment is constrained by mechanical mismatch, power-source dependence and limited transmission distance. Here we present a fully chip-less, self-powered and wireless electronic patch that operates through friction-induced electromagnetic waves. Using one dielectric layer and two patterned metal layers, the device integrates sensing, energy supply and wireless communication in a compact architecture. Grid and antenna patterns enable vector sensing and information encoding. The patch achieves a wireless working distance exceeding 96 m, enabling self-powered motion sensing and wireless communication from centimetre to near-hundred-metre scales. We demonstrate an adhesive, stretchable patch for knee and finger-bending monitoring and a wristband for binary-coded messaging. Our platform highlights a practical strategy for wearable sensing and wireless communication.</p>

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Chip-less, self-powered electronic patch for wireless sensing and communication

  • 期刊论文

  • 发表日期：

    2026年2月27日

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  • Chengyu Li,
  • Shuxing Xu,
  • En Zhao,
  • Yanshuo Sun,
  • Tingyu Wang,
  • Guanbo Min,
  • Jian He,
  • Zhong Lin Wang,
  • Wei Tang

摘要

Flexible electronics have advanced wearable health monitoring and wireless communication, yet their long-term deployment is constrained by mechanical mismatch, power-source dependence and limited transmission distance. Here we present a fully chip-less, self-powered and wireless electronic patch that operates through friction-induced electromagnetic waves. Using one dielectric layer and two patterned metal layers, the device integrates sensing, energy supply and wireless communication in a compact architecture. Grid and antenna patterns enable vector sensing and information encoding. The patch achieves a wireless working distance exceeding 96 m, enabling self-powered motion sensing and wireless communication from centimetre to near-hundred-metre scales. We demonstrate an adhesive, stretchable patch for knee and finger-bending monitoring and a wristband for binary-coded messaging. Our platform highlights a practical strategy for wearable sensing and wireless communication.