Abstract
Fundamental microtribological properties such as the interaction force between surfaces, friction, and wear are studied by performing atomic and lateral force microscopy measurements on Au(001) under ultrahigh vacuum conditions. The system tip/sample surface is treated as a model-like micromechanical system in sliding motion. The adhesion force appears to be a substantial contribution to the interaction force between tip and sample surface. The wear of the Au(001) surface is estimated and its impact is discussed, identifying elastic deformation as the main dissipative contribution to the friction process. Combining the results of the friction study with those of the adhesion force measurements, the friction behavior of the microsystem is favored to be explained by a sliding single-asperity contact.
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