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      Adhesive energy, force and barrier height between simple metal surfaces

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      Author(s)
      Çıracı, Salim
      Tekman, E.
      Gökçedag, M.
      Batra, I. P.
      Baratoff, A.
      Date
      1992
      Source Title
      Ultramicroscopy
      Print ISSN
      0304-3991
      Volume
      42-44
      Issue
      PART 1
      Pages
      163 - 168
      Language
      English
      Type
      Article
      Item Usage Stats
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      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
      Adhesion
      Atomic 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
      Permalink
      http://hdl.handle.net/11693/26122
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/0304-3991(92)90261-H
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      • Department of Physics 2550
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