Watkins, Matthew and Shluger, Alexander L. (2010) Mechanism of contrast formation in atomic force microscopy in water. Physical Review Letters, 105 (19). ISSN 0031-9007
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Item Type: | Article |
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Item Status: | Live Archive |
Abstract
We use computer modeling to investigate the mechanism of atomic-scale corrugation in frequency-modulation atomic force microscopy imaging of inorganic surfaces in solution. Molecular dynamics simulations demonstrate that the forces acting on a microscope tip result from the direct interaction between a tip and a surface, and forces entirely due to the water structure around both tip and surface. The observed force depends on a tip structure and is a balance between largely repulsive potential energy changes as the tip approaches and the entropic gain when water is sterically prevented from occupying sites near the tip and surface. © 2010 The American Physical Society.
Keywords: | atomic force microscopy, contrast formation, atomic scale corrugation, Inorganic surfaces, Molecular dynamics, Water, Potential energy, entropic gain |
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Subjects: | F Physical Sciences > F300 Physics |
Divisions: | College of Science > School of Mathematics and Physics |
Related URLs: | |
ID Code: | 17711 |
Deposited On: | 19 Aug 2015 13:28 |
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