Watkins, M;
Shluger, AL;
(2010)
Mechanism of Contrast Formation in Atomic Force Microscopy in Water.
PHYS REV LETT
, 105
(19)
, Article 196101. 10.1103/PhysRevLett.105.196101.
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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.
| Type: | Article |
|---|---|
| Title: | Mechanism of Contrast Formation in Atomic Force Microscopy in Water |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.105.196101 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.105.196101 |
| Language: | English |
| Additional information: | © 2010 The American Physical Society |
| Keywords: | MOLECULAR-DYNAMICS, SIMULATION, SCALE |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/467981 |
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