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Scalable Solution-processed Fabrication Strategy for High-performance, Flexible, Transparent Electrodes with Embedded Metal Mesh

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Microstructured silicone substrate for printable and stretchable metallic films.

Adam P Robinson¹, Ivan Minev, Ingrid M Graz

¹Nanoscience Centre, Department of Engineering, University of Cambridge, 11 J. J. Thomson Avenue, Cambridge CB3 0FF, United Kingdom. ar433@cam.ac.uk

Langmuir : the ACS Journal of Surfaces and Colloids

|March 18, 2011

Summary

This summary is machine-generated.

Researchers developed stretchable metallic films for electronics by printing silver ink onto patterned silicone. These elastic wires maintain high conductivity after repeated stretching, enabling durable stretchable electronic devices.

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Area of Science:

Materials Science
Nanotechnology
Electrical Engineering

Background:

Stretchable electronics require reliable elastic wiring.
Integrating inorganic or organic circuits on elastomeric substrates presents challenges for conductivity and durability.

Purpose of the Study:

To develop a technique for fabricating reversibly stretchable metallic films.
To optimize ink-substrate interactions for enhanced mechanical and electrical properties.

Main Methods:

Printing silver-based ink onto microstructured silicone (polydimethylsiloxane - PDMS) substrates.
Optimizing ink wetting and pinning by varying micropillar array geometry.
Characterizing electrical conductivity and reversible stretchability.

Main Results:

Achieved high electrical conductivity of approximately 11,000 S/cm.
Demonstrated reversible stretching to 20% strain over 1000 cycles without electrical failure.
Engineered strain relief in the metallic film on patterned PDMS for enhanced stretchability.

Conclusions:

The developed technique enables the fabrication of highly conductive and durable stretchable metallic films.
Microstructured silicone substrates with engineered strain relief are crucial for reliable elastic wiring in stretchable electronics.