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Stretchable Liquid Metal-Based Conductive Textile for Electromagnetic Interference Shielding.

Li-Chuan Jia1,2, Xian-Xiang Jia2, Wen-Jin Sun2

  • 1College of Electrical Engineering, Sichuan University, Chengdu 610065, China.

ACS Applied Materials & Interfaces
|November 12, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed a highly stretchable conductive textile for electromagnetic interference (EMI) shielding. This material maintains excellent EMI shielding even after extensive stretching and washing, enabling new electronic devices.

Keywords:
EMI shieldingconductive textileliquid metalreliabilitystretchability

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Nanotechnology

Background:

  • Conductive textiles (CTs) are crucial for electromagnetic interference (EMI) shielding.
  • Existing CTs lack stretchability and reliability due to rigid conductive networks, limiting their use in flexible electronics.

Purpose of the Study:

  • To develop a highly stretchable and reliable conductive textile for effective EMI shielding.
  • To overcome the limitations of conventional CTs in stretchable electronic applications.

Main Methods:

  • Designing a deformable liquid-metal (LM) coating on a textile substrate.
  • Applying a polydimethylsiloxane (PDMS) protective layer over the LM coating.
  • Evaluating EMI shielding efficiency (EMI SE) under various strain conditions and after mechanical stress.

Main Results:

  • The PDMS-LM/Textile achieved an EMI SE of 72.6 dB at 0.35 mm thickness.
  • Maintained high EMI SEs of 66.0 dB (30% strain) and 52.4 dB (50% strain).
  • Demonstrated excellent durability with 91.7% and 80.3% EMI SE retention after 5000 stretching cycles.

Conclusions:

  • The novel PDMS-LM/Textile offers superior and durable EMI shielding performance.
  • The deformable LM network and PDMS protection ensure excellent stretchability and reliability.
  • This provides a promising pathway for advanced EMI shielding in stretchable electronic devices.