Universal aspects of adhesion and atomic force microscopy
A Banerjea; J R Smith; J Ferrante; A Banerjea; NASA Lewis Res. Center, Cleveland, OH, USA; J R Smith; NASA Lewis Res. Center, Cleveland, OH, USA; J Ferrante; NASA Lewis Res. Center, Cleveland, OH, USA
Журнал:
Journal of Physics: Condensed Matter
Дата:
1990-11-05
Аннотация:
Adhesive energies are computed for flat and atomically sharp tips as a function of the normal distance to the substrate. The dependence of binding energies on tip shape is investigated. The magnitudes of the binding energies for the atomic force microscope are found to depend sensitively on tip material, tip shape and the sample site being probed. The form of the energy-distance curve, however, is universal and independent of these variables, including tip shape.
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