Self-Assembly Enabled Printable Asymmetric Self-Insulated Stretchable Conductor for Human Interface.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 38563579.
- Also identified by DOI 10.1002/adma.202400082.
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Abstract
Soft and stretchable conductors with high electrical conductivity and tissue-like mechanical properties are crucial for both on-skin and implantable electronic devices. Liquid metal-based conductors hold great promise due to their metallic conductivity and minimal stiffness. However, the surface oxidation of liquid metal particles in polymeric matrices poses a challenge in forming a continuous pathway for highly conductive elastic composites. Here, it is reported a printable composite material based on liquid metal and conducting polymer that undergoes a self-assembly process, achieving high conductivity (2089 S cm<sup>-1</sup>) in the bottom surface while maintaining an insulated top surface, high stretchability (>800%), and a modulus akin to human skin tissue. This material is further applied to fabricate skin-interfaced strain sensors and electromyogram sensors through 3D printing.
Medical subject headings
- Electric Conductivity
- Wearable Electronic Devices
- Printing, Three-Dimensional