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Printable Stretchable Serpentine Electrodes Incorporating Support Patterns for Stretchable Electronics.

Youngwook Noh1, Geonhui Lee1, Horim Lee1

  • 1Department of Mechanical Design and Production Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.

ACS Applied Materials & Interfaces
|October 29, 2025
PubMed
Summary
This summary is machine-generated.

Researchers improved stretchable electronics by adding elliptical support patterns to serpentine interconnects. This design reduces maximum strain by up to 50%, enhancing elasticity within limited space without extra steps.

Keywords:
finite element analysisserpentine patternstretchable electrodestretchable electronicssupport pattern

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Electrical Engineering

Background:

  • Serpentine interconnects are crucial for stretchable electronics using island-bridge architectures.
  • Their elasticity is highly dependent on dimensions, often constrained by manufacturing and space limitations.

Purpose of the Study:

  • To enhance the stretchability of serpentine interconnects within existing dimensional constraints.
  • To investigate the impact of support patterns on strain distribution and magnitude.

Main Methods:

  • Optimized serpentine line width for printing processes.
  • Introduced various support patterns (size, position) within dimensional limits.
  • Utilized finite element analysis (FEA) to evaluate strain distribution.
  • Performed tensile tests on screen-printed stretchable electrodes.

Main Results:

  • Solid elliptical supports at specific locations significantly improved strain distribution.
  • Maximum strain was reduced by up to 50% due to elliptical supports.
  • FEA results were validated by tensile testing of screen-printed electrodes.

Conclusions:

  • Incorporating elliptical support patterns effectively enhances serpentine interconnect stretchability.
  • This method improves elasticity in limited areas without additional processing.
  • The findings are applicable to the design of advanced stretchable electronic devices.