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<p>Protecting sensitive equipment from electromagnetic radiation damage requires the development of high-performance electromagnetic interference shielding films. As the film thickness is reduced to micro/nano scales, electromagnetic interference shielding capability generally decreases rapidly due to the weaker reflection. As a result, enhanced electromagnetic interference shielding performance in sub-μm thin films remains as an unsolved challenge. Inspired by the naturally wrinkling of fruit skin, we propose a homogeneous strain strategy to achieve self-wrinkling-induced lattice-structured MXene by uniform polymer shrinkage due to dehydration. Uniform wrinkle amplitude can be tuned from 0.8 to 6 μm, which results in additional surface scattering of electromagnetic-waves and electrical conduction paths. The obtained lattice-structured films demonstrate an excellent electromagnetic interference shielding of up to 81.5 dB for a thickness of 17 μm, maintaining high electromagnetic interference shielding performance and stability after enduring various harsh testing conditions. These results demonstrate the potential of wrinkling-induced, surface regular patterns for improving the electromagnetic interference shielding performance of ultra-thin films based on conventional materials.</p>

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Regular-wrinkling tunable MXene lattice for electromagnetic interference shielding

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月10日

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  • Shan Zhang,
  • Juntao Wu,
  • Zhi-Ling Hou,
  • Pengfei Hu,
  • Bo Cai,
  • Chenming Liang,
  • Lu Zhou,
  • Wenhao Liang,
  • Yufeng Xue,
  • Martin C. Koo,
  • Pei-Yan Zhao,
  • Li-Min Liu,
  • Mingjie Liu,
  • Guang-Sheng Wang

摘要

Protecting sensitive equipment from electromagnetic radiation damage requires the development of high-performance electromagnetic interference shielding films. As the film thickness is reduced to micro/nano scales, electromagnetic interference shielding capability generally decreases rapidly due to the weaker reflection. As a result, enhanced electromagnetic interference shielding performance in sub-μm thin films remains as an unsolved challenge. Inspired by the naturally wrinkling of fruit skin, we propose a homogeneous strain strategy to achieve self-wrinkling-induced lattice-structured MXene by uniform polymer shrinkage due to dehydration. Uniform wrinkle amplitude can be tuned from 0.8 to 6 μm, which results in additional surface scattering of electromagnetic-waves and electrical conduction paths. The obtained lattice-structured films demonstrate an excellent electromagnetic interference shielding of up to 81.5 dB for a thickness of 17 μm, maintaining high electromagnetic interference shielding performance and stability after enduring various harsh testing conditions. These results demonstrate the potential of wrinkling-induced, surface regular patterns for improving the electromagnetic interference shielding performance of ultra-thin films based on conventional materials.