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Updated: May 20, 2026

A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires
Published on: January 21, 2016
Size-Dependent Rupture Strain of Elastically Stretchable Metal Conductors
O Graudejus1, Z Jia, T Li
1Department of Chemistry and Biochemistry, and Center for Adaptive Neural Systems, Arizona State University, Tempe, Arizona 85287.
Abstract:
Experiments show that the rupture strain of gold conductors on elastomers decreases as the conductors are made long and narrow. Rupture is caused by the irreversible coalescence of microcracks into one long crack. A mechanics model identifies a critical crack length ℓ(cr), above which the long crack propagates across the entire conductor width. ℓ(cr) depends on the fracture toughness of the gold film and the width of the conductor. The model provides guidance for the design of highly stretchable conductors.
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