Science and Nature

Highly conductive and elastic nanomembrane for skin electronics

Thin, sensitive skin electronics

The properties of the human sense of touch, including high sensitivity to differences in temperature, strain, or ground roughness, are robust to replicate in robotics because skin materials must always be highly conductive, stretchable, and thin. Jung et al. developed a process to assemble nanomaterials as a monolayer that’s partially embedded in an extremely-thin elastomer. The system works by depositing a mixed solvent containing nanostructured silver and/or gold, alongside with elastomer, onto deionized water. This ends up in a layer of nanoparticles residing at the interface coating with elastomer, which is further densified by the addition of surfactant. The system is scalable, and the resulting elastomer membranes may perchance additionally be transferred to assorted substrates.

Science, abh4357, this residing p. 1022

Abstract

Skin electronics require stretchable conductors that fulfill metallike conductivity, high stretchability, ultrathin thickness, and facile patternability, nevertheless achieving these characteristics simultaneously is hard. We expose a waft assembly system to assemble a nanomembrane that meets all these requirements. The style enables a compact assembly of nanomaterials at the water–oil interface and their partial embedment in an ultrathin elastomer membrane, which is ready to distribute the utilized strain in the elastomer membrane and thus lead to a high elasticity even with the high loading of the nanomaterials. Moreover, the structure enables frigid welding and bilayer stacking, resulting in high conductivity. These properties are preserved even after high-resolution patterning by the employ of photolithography. A multifunctional epidermal sensor array may perchance additionally be fabricated with the patterned nanomembranes.

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