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A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
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A Mechanically Interlocking Strategy Based on Conductive Microbridges for Stretchable Electronics.

Ming Zhu1,2, Shaobo Ji2, Yifei Luo2

  • 1State Key Laboratory of Advanced Welding and Joining, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|January 3, 2022
PubMed
Summary

Researchers developed novel solderless interconnections for stretchable electronics, enabling reliable connections for wearable healthcare devices. This breakthrough enhances stretchability and integration for advanced, all-stretchable systems.

Keywords:
all-stretchable platformshealthcare electronicsinterlocking structuresstretchable electronics packagingstretchable interconnections

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Biomedical Engineering

Background:

  • Stretchable electronics are vital for wearable healthcare, but integrating individual devices into functional systems remains challenging.
  • Reliable stretchable interconnections are a key bottleneck for creating fully stretchable electronic systems.

Purpose of the Study:

  • To develop a novel, solderless interconnection method for assembling stretchable devices onto soft circuits.
  • To create multifunctional, all-stretchable electronic platforms for advanced applications.

Main Methods:

  • Mechanically interlocking microbridges were designed for solderless stretchable interconnections.
  • Conductive microbridges and adhesive polymers were used to ensure conductivity and adhesion.
  • Surface mounting of stretchable strain sensors and supercapacitors onto soft circuits was demonstrated.

Main Results:

  • The developed interconnections achieved enhanced stretchability up to 35% strain with minimal resistance change.
  • Conventional solder-assisted connections failed at strains below 5%.
  • A self-powered, all-stretchable data-acquisition platform was successfully fabricated as a proof of concept.

Conclusions:

  • Solderless interconnections based on mechanically interlocking microbridges offer a robust solution for integrating stretchable devices.
  • This technology enables the creation of highly stretchable, multifunctional electronic systems for applications like wearable healthcare.
  • The developed strategy is valuable for advancing the field of all-soft, integrated electronic systems.