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Highly conductive 3D metal-rubber composites for stretchable electronic applications

Authors :
Yue Zhao
Weidong Yang
Yu Jun Tan
Si Li
Xianting Zeng
Zhuangjian Liu
Benjamin C.-K. Tee
Source :
APL Materials, Vol 7, Iss 3, Pp 031508-031508-7 (2019)
Publication Year :
2019
Publisher :
AIP Publishing LLC, 2019.

Abstract

Stretchable conductors are critical building blocks for enabling new forms of wearable and curvilinear electronics. In this paper, we introduce a new method using the interfacial design to enable stretchable conductors with ultra-high conductivity and robustness to strain using three-dimensional helical copper micro-interconnects embedded in an elastic rubber substrate (eHelix-Cu). We studied the interfacial mechanics of the metal-elastomer to achieve highly reversible conductivities with strains. The stretchable eHelix-Cu interconnect has an ultra-high conductivity (∼105 S cm−1) that remains almost invariant when stretched to 170%, which is significantly higher than in other approaches using nanomaterials. The stretchable conductors can withstand strains of 100% for thousands of cycles, demonstrating remarkable durability for exciting potential wearable electronic applications.

Details

Language :
English
ISSN :
2166532X
Volume :
7
Issue :
3
Database :
Directory of Open Access Journals
Journal :
APL Materials
Publication Type :
Academic Journal
Accession number :
edsdoj.4449a63b7f6f4edeabc0d014e608f2da
Document Type :
article
Full Text :
https://doi.org/10.1063/1.5083942