Abstract
As head-disk spacing approaches sub-micro-inch level, the challenges to the current optical flying height testing setups are not only spacing measurement accuracy at small head-disk spacing hut also how to make the interface similar to the interface in actual disk drives and how to investigate the head-disk interaction caused by lubricant. This paper presents a set of more reliable results. tested by a novel setup. on slider-disk interaction at small head-disk spacing and with the effect caused by lubricant into account.
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