Gosvami, NN;
Sinha, SK;
O'Shea, SJ;
(2008)
Squeeze-out of branched alkanes on graphite.
PHYS REV LETT
, 100
(7)
, Article 076101. 10.1103/PhysRevLett.100.076101.
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Abstract
We study squalane and heptamethylnonane (HMN) confined between a conducting atomic force microscope tip and a graphite surface. Solvation layering occurs for both liquids but marked differences in the squeeze out mechanics are observed for ordered or disordered monolayers. The squalane monolayer at 25 degrees C is an ordered solid, as verified by direct imaging, and the squeeze out can be modeled using elastic continuum mechanics. HMN is in a disordered state at 25 degrees C and cannot be modeled as a single elastic asperity even in solid-solid contact because HMN liquid is trapped in the contact zone.
| Type: | Article |
|---|---|
| Title: | Squeeze-out of branched alkanes on graphite |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.100.076101 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.100.076101 |
| Language: | English |
| Additional information: | © 2008 The American Physical Society |
| Keywords: | CONFINED THIN-FILMS, MOLECULAR-DYNAMICS, SOLVATION FORCES, SURFACES, LIQUID, MONOLAYERS, DISORDER, SQUALANE, FLUIDS, MICA |
| 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 |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1301375 |
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