DocumentCode :
1499402
Title :
Molecular Spreading of Pure and Binary Mixture PFPE Nano Films on Carbon-Overcoated Disks
Author :
Chung, Pil Seung ; Jhon, Myung S.
Author_Institution :
Dept. of Chem. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
Volume :
46
Issue :
6
fYear :
2010
fDate :
6/1/2010 12:00:00 AM
Firstpage :
2405
Lastpage :
2408
Abstract :
Due to continuous increase in areal density, the head-media spacing combining head & media overcoat, lubricant film and fly height, is expected to be less than 6.5 nm for 1 Tbits/in2 hard disk drives (HDDs). The intermittent contacts between head and disk during operation are unavoidable and cause lubricant depletion in the film. Therefore, the nanoscale conformation and self-healing ability (i.e., spreading) of perfluoropolyether (PFPE) lubricant nano films is critically important in the head-disk interface to maintain long-term reliability of HDDs. In this paper, the spreading phenomena for pure and binary mixture PFPE lubricant nano films on the carbon-overcoated media were examined via molecular dynamics simulation.
Keywords :
carbon; hard discs; lubricants; molecular dynamics method; nanostructured materials; polymer films; wetting; C; areal density; binary mixture; carbon-overcoated disks; carbon-overcoated media; hard disk drives; head-disk interface; head-media spacing; intermittent contacts; lubricant depletion; molecular dynamics simulation; molecular spreading; nanoscale conformation; perfluoropolyether lubricant nanofilms; self-healing ability; Character generation; Chemical engineering; Data engineering; Data storage systems; Equations; Hard disks; Lubricants; Maintenance; Materials science and technology; Polymer films; Binary mixture; molecular dynamics; perfluoropolyether (PFPE); spreading;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2010.2044762
Filename :
5467590
Link To Document :
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