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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/4730

Title: Physics of ultra-thin surface films on molecularly smooth surfaces
Authors: Teodorescu, M.
Balakrishnan, Sashi
Rahnejat, Homer
Keywords: Hydrodynamics
Solvation force
Van der waals force
Ultra-thin fluid films
Subsurface stress tensor
Issue Date: 2006
Publisher: Professional Engineering Publishing / © IMECHE
Citation: TEODORESCU, M., BALAKRISHNAN, S. and RAHNEJAT, H., 2006. Physics of ultra-thin surface films on molecularly smooth surfaces. Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanoengineering and Nanosystems, 220 (1), pp. 7-19
Abstract: This paper investigates the physics of ultra-thin surface films in nano-scale counterformal conjunctions. A novel approach is proposed in which the transient behaviour of the fluid film is integrated with the contact mechanics of the approaching bodies. The method predicts film thickness and pressure distribution, as well as local elastic deflection and resulting sub-surface stress tensor. It is found that inertial dynamics of bodies, as determined by local squeeze film effect, prevents diminution of film below certain thickness and reduces the solvation effect. This approach has direct applications for micro-scale mechanisms, where prediction of thin surface adhered film thickness is required for tribological purposes, as well as structural in-service integrity of contacts of vanishing dimensions.
Description: This article was published in the Journal, Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanoengineering and Nanosystems [© IMECHE]. The definitive version is available at: http://www.pepublishing.com/
Version: Published
DOI: 10.1243/17403499JNN59
URI: https://dspace.lboro.ac.uk/2134/4730
ISSN: 1740-3499
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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