Abstract
In the field of head-disk interfaces, there has been a long-running argument about whether the attractive force between head and disk is caused by van der Waals (vdW) force [13-15] or meniscus force [16-18]. Ono and Nakagawa [19, 20] measured the dynamic adhesion force that was applied on the slider when 1and 2-mm-radius glass sliders collided with a magnetic disk with a molecularly thin lubricant layer. They concluded that the adhesion force observed at the instant of separation after a short contact period of 15-30 µs was caused by the meniscus force rather than by vdW force. However, there were criticisms that the meniscus bridge could not be generated quickly enough to have this effect.
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