Extended Data Fig. 6: SEM images of PAni nanowires with/without sputtered gold at different depths of designed hexagon-walled pillar-array structure.
From: Frictionless multiphasic interface for near-ideal aero-elastic pressure sensing

a, SEM images of PAni nanowires without gold sputtered. b, SEM images of PAni nanowires with gold sputtered. The SEM images show the gold sputtering at different depth positions on a pillar at different magnifications. The nanostructures of PAni nanowires w/wo metal sputtered are evenly distributed on the surface of designed complex 3D microstructures. This uniform nanostructures with further ODT treatments are hydrophobic and oleophilic which provide an excellent oil-locking ability to form ultra-slippery surfaces on pillars.