Electrically Conductive Liquid Metal Composite Adhesives for Reversible Bonding of Soft Electronics
Abstract
Conductive adhesives are required for the integration of dissimilar material components to create soft electronic and robotic systems. Here, a heterogeneous liquid metal‐based conductive adhesive is developed that reversibly attaches to diverse surfaces with high stretchability (>100% strain), low modulus ( 70 Jm−2 (≈ 25x enhancement over unmodified composites) and described with a viscoelastic analysis, providing design guidelines for controllable yet reversible adhesion in electrically conductive systems. The architecture of STICK‐LM adhesives provides anisotropic and heterogeneous electrical conductivity and enables direct integration into soft functional systems. This is demonstrated with deformable fuses for robotic joints, repositionable electronics that rapidly attach on curvilinear surfaces, and stretchable adhesive conductors with nearly constant electrical resistance. This study provides a methodology for electrically conductive, reversible adhesives for electrical and mechanical integration of multicomponent systems in emerging technologies.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 06, 2023
- Source ID
- 10.1002/adfm.202304101
Entities
People
- A. Haque
- Chanhong Lee
- Dohgyu Hwang
- Dong Hae Ho
- Michael D. Bartlett
- Ravi Tutika
Organizations
- Defense Advanced Research Projects Agency
- National Science Foundation
- Virginia Tech