Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/49411
Title: An investigation into the head-disk interface technology leading to extremely small mechanical head-disk spacing
Authors: MAN YIJUN
Keywords: head-disk interface (HDI), flying height (FH), surfing recording, electrical/tribo-current, thermal flying height control (TFC) slider, and tribology.
Issue Date: 11-Jul-2013
Source: MAN YIJUN (2013-07-11). An investigation into the head-disk interface technology leading to extremely small mechanical head-disk spacing. ScholarBank@NUS Repository.
Abstract: The research reported in this dissertation aims to investigate the slider-lubricant interactions when the slider and lubricant are in close proximity. The investigations of lubricant transfer by the sliders with different designs show that lubricant transfer is not dependent on the air-bearing pressure but the effective size at the slider?s central trailing pad. Slider design with multi-shallow step and a smaller central trailing pad significantly improves its performances. An electrical current method has been explored to detect the slider-lubricant contact. With the proposed method, the three states of slider-disk interaction, namely non-contact, lubricant-contact and solid-contact regions can be differentiated. The in-depth investigations of lubricant-contact with a modulated driving voltage applying to the specific TFC slider show that the proposed method has a sensitivity which is comparable to that of the LDV method and can also be used to estimate the onset of light lubricant-contact and accurately investigate the lube-surfing state.
URI: http://scholarbank.nus.edu.sg/handle/10635/49411
Appears in Collections:Ph.D Theses (Open)

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