Fig. 2: Electrical anti-friction ability.
From: Anti-friction gold-based stretchable electronics enabled by interfacial diffusion-induced cohesion
a Schematic illustration of Au-based stretchable devices upon cyclic frictions. b Anti-friction performance of Au-PDMS, Au-SEBS, Au-RPU and Au-RPU upon cyclic frictions using an artificial aging skin under 130 kPa pressure. c SEM images of Au-PDMS, Au-SEBS, Au-WPU, and Au-RPU after cyclic frictions. Bright area represents Au and dark area represents the substrate. Scale bar, from left to right: 200 μm, 10 μm, 3 μm and 3 μm. Each experiment was repeated three times independently with similar results. d Anti-friction performance of Au-RPU upon multiple frictions by four friction objects with the increased surface roughness. The vertical pressure is 130 kPa. e Stretchability comparison of the stretchable Au film on PDMS, SEBS and RPU substrates. Data in (b) and (d) are presented as mean values ± SD, n = 3 independent samples.
