Adhesive energy, force and barrier height between simple metal surfaces
Date
1992Source Title
Ultramicroscopy
Print ISSN
0304-3991
Volume
42-44
Issue
PART 1
Pages
163 - 168
Language
English
Type
ArticleItem Usage Stats
225
views
views
212
downloads
downloads
Abstract
Using the self-consistent field pseudopotential method we calculated the adhesive energy, perpendicular and lateral forces and barrier height between two rigid A1(001) slabs modeling the sample and a blunt tip. We found that the adhesive energy and forces are site specific, and can lead to a significant corrugation in the constant force mode with negative force gradient. Lateral forces, which determine friction on the atomic scale are not simply proportional to the perpendicular force, and are typically one order of magnitude smaller. Our results confirm that perpendicular tip force and barrier height are interrelated for separations where the force gradient is positive. © 1992.
Keywords
AdhesionAtomic Physics
Calculations
Force Measurement
Hysteresis
Mathematical Models
Microscopic Examination
Adhesive Energy
Barrier Height
Field Pseudopotential Method
Lateral Forces
Scanning Force Microscopy
Surfaces
conference paper
microscopy
scanning force microscopy