Journal
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
Volume 20, Issue 12, Pages 1281-1293Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1163/156856106778456555
Keywords
quasi-continuum model; adhesion; SAMs; chain length; Lennard-Jones potential; van der Waals force; pull-off point
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It has been confirmed experimentally that the adhesion force measured between an atomic force microscope (AFM) tip and the self-assembled monolayers (SAMs) has a direct correlation with the chain length of SAMs, and that the adhesion force decreases with the increase of the chain length. In this paper, a theoretical model is put forward to calculate the adhesion force between the AFM tip and the SAMs by integrating the Lennard-Jones potential. The theoretical results are in good agreement with the existing experimental results.
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