Highly conductive 3D metal-rubber composites for stretchable electronic applications
Source abstract
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.
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Research context
OpenAlex topics: Advanced Sensor and Energy Harvesting Materials · Advanced Materials and Mechanics · Conducting polymers and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore 1 , 117456, Singapore
Singapore Institute of Manufacturing Technology, Agency for Science, Technology and Research (A*STAR) 2 , 138634, Singapore
Department of Material Science and Engineering, National University of Singapore 3 , 117583, Singapore
Biomedical Institute for Global Health Research and Technology (BIGHEART), National University of Singapore 4 , 117599, Singapore
Institute of High Performance Computing, Agency for Science, Technology and Research (A*STAR) 5 , 138632, Singapore
Funding
National University of Singapore · National Research Foundation Singapore
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