Atomic Structure Affects the Directional Dependence of Friction

URN to cite this document:: urn:nbn:de:bvb:355-epub-295753
DOI to cite this document:: 10.5283/epub.29575

Weymouth, Alfred J. ; Meuer, Daniel ; Mutombo, Pingo ; Wutscher, Thorsten ; Ondracek, Martin ; Jelinek, Pavel ; Giessibl, Franz J.

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Date of publication of this fulltext: 06 Mar 2014 13:10

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Abstract

Friction between two objects can be understood by the making, stretching, and breaking of thousands of atomic-scale asperities. We have probed single atoms in a nonisotropic surface [the H-terminated Si(100) surface] with a lateral force microscope operating in noncontact mode. We show that these forces are measurably different, depending upon the direction. Experimentally, these differences are ...