a-means-for-tuning-fri-3

The image shows a sketch of a metainterface between a rigid smooth transparent solid on the top and a soft blue rough solid on the bottom. Dark gray ellipses represent real contact regions. The topography is made of an array of spherical asperities, each with a specifically designed height. The red arrow shows the direction of motion applied to the top solid to probe the friction behavior of the metainterface. Credit: Nazario Morgado