Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/88197
Title: Molecular dynamics studies of lubricant depletion under moving laser heating: Effects of laser power and film thickness
Authors: Li, Bei
Wong, Chee How
Keywords: Lubricant Depletion
Molecular Dynamics
Issue Date: 2015
Source: Li, B., & Wong, C. (2015). Molecular dynamics studies of lubricant depletion under moving laser heating: Effects of laser power and film thickness. Tribology International, 92, 38-46.
Series/Report no.: Tribology International
Abstract: Molecular dynamics simulation is employed to study the depletion behaviors of perfluoro-lubricants under scanning laser heating for heat-assisted magnetic recording hard disk drives. A partial lubricant near the substrate is irradiated by the laser beam to mimic nano-scale heat transfer from disk to lubricant. The lubricant surface morphology and thickness profiles are examined to reveal the dynamic depletion behaviors. The localized temperature evolution is also evaluated to illustrate the direction-dependent ridge formation around the depletion zone. In addition, the effects of laser power and film thickness on lubricant depletion are explored. Although evaporation is enhanced significantly at high laser powers or for lubricant with thickness around one monolayer, thermodiffusion is the primary mode of lubricant depletion under scanning laser heating.
URI: https://hdl.handle.net/10356/88197
http://hdl.handle.net/10220/44571
ISSN: 0301-679X
DOI: http://dx.doi.org/10.1016/j.triboint.2015.05.015
Rights: © 2015 Elsevier Ltd.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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