We present preliminary results from a study of the friction of surfaces with nanoscopic roughness. Surfaces with asperities of a chosen height and average spacing were formed by self-assembly of nanometer-sized solid particles on a flat substrate. The adsorption density of particles was investigated with Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM), and the suitability of these substrates for friction experiments at different length scales was evaluated. Initial results from friction experiments with a nanoparticle-covered surface in non-adhesive contact with an atomically flat surface in a surface forces apparatus (SFA) are presented.
Volume Subject Area:
Nanotribology
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