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Planar patterned stretchable electrode arrays based on flexible printed circuits
R E Taylor1, C M Boyce, M C Boyce
1Department of Mechanical Engineering, Stanford University, CA 94305 (USA).
Journal of Micromechanics and Microengineering : Structures, Devices, and Systems
|November 19, 2013
Summary
Researchers developed a new method for creating reliable planar stretchable electronics using novel perforations. This strategy ensures consistent electrical performance and planarity even under significant strain, paving the way for industrial applications.
Area of Science:
- Materials Science
- Electrical Engineering
- Mechanical Engineering
Background:
- Stretchable electronics require robust manufacturing and performance under deformation for industrial use.
- Current technologies face challenges in maintaining reliability and planarity during large strains.
Purpose of the Study:
- To present a novel strategy for fabricating planar stretchable electronics.
- To demonstrate a stretchable microelectrode array using flex circuit technology.
Main Methods:
- Designing novel, rational perforations to create low-strain islands and conductive pathways.
- Utilizing standard flex circuit technology for device fabrication.
- Testing electrical properties and planarity under applied strains up to 15% and 120,000 cycles.
Main Results:
- The novel perforation strategy enables devices to maintain constant electrical properties and planarity under strain.
- The stretchable microelectrode device exhibited constant resistance up to 20% strain.
- The device maintained less than a 4% resistance offset over 120,000 cycles at 10% strain.
Conclusions:
- The presented strategy offers a reliable method for manufacturing planar stretchable electronics.
- This approach is compatible with various substrates and conductors, enhancing material flexibility.
- The technology demonstrates significant potential for broad industrial application in stretchable electronics.
