Please use this identifier to cite or link to this item:
Title: Nanolubrication: Characterization of patterned lubricant films on magnetic hard disks
Authors: Guddati, S.
Zhang, J.
Sinha, S.K. 
Hsu, S.M.
Keywords: Head-disk interface tribology
Pattern-bonded lubricant
Issue Date: Mar-2006
Citation: Guddati, S., Zhang, J., Sinha, S.K., Hsu, S.M. (2006-03). Nanolubrication: Characterization of patterned lubricant films on magnetic hard disks. Tribology Letters 21 (3) : 253-261. ScholarBank@NUS Repository.
Abstract: Patterned lubricant films on magnetic hard disks offer potential advantages in controlled bonding sites, higher average shear strength, and longer durability. However, since the lubricant film thickness is at 1 or 2 nm, characterization of the pattern is difficult. Normal atomic force microscopic techniques can only image very small area in the nanometer range and the sharp tip can potentially modify the pattern. A wide area optical technique is needed to characterize the patterns. This paper examines patterned lubricant film using an optical surface analyzer (OSA) to image the bonded phase and mobile phase of an alcohol functionalized perfluoropolyether (PFPE) on magnetic hard disks. The phase shift signal and reflectivity intensity of the polarized light spectra provide clear optical images of the lubricant film at nanometer thickness. Optical images were successfully obtained before and after the buffing process and the ramp load and unload (L/UL) testing. Results of 100% bonded, 100% mobile, and 20% zigzag patterned lubricant films confirm that the patterned lubricant films can control the bonded/mobile ratio of such films better. © 2006 Springer Science+Business Media, Inc.
Source Title: Tribology Letters
ISSN: 10238883
DOI: 10.1007/s11249-006-9031-x
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Nov 14, 2018


checked on Nov 6, 2018

Page view(s)

checked on Nov 10, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.