Abstract
This paper describes the effects of ultra-thin liquid lubricant films on air bearing dynamics and flyability of nano-spacing flying head sliders in hard disk drives. In particular, the effects of non-uniform lubricant film distributions on head-disk interface dynamics are studied. The dynamics of slider is monitored using Acoustic Emission (AE) and the interactions between the slider and disk are investigated. Complex slider responses were observed, which were sensitive to lubricant film thickness. In addition, it is found that the periodic lubricant modulations or re-distributions caused by the slider-disk interactions can be observed.
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