Abstract
Abstract In this paper, we demonstrate a novel process of controlling the friction of a continuous rod by adhering inorganic micro-particles. A standardized continuous dip-coating protocol has been developed in our laboratory for depositing particles from a liquid carrier system to the cylindrical elastic rod substrate. Polymeric binder is used to deliver the particles as asperities over the rod substrate and by controlling their size and distribution, the coefficient of friction of the rod is determined. Tabletop experiments are designed and performed to measure the friction coefficient following the capstan equation. The friction coefficient of the coated rod increases with the increase of the particle volume fraction in the suspension. The force-extension curve of these experiments shows that the proposed process can successfully tune the friction between rods.
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