Corrected expression of the van der Waals pressure for multilayered system with application to analyses of static characteristics of flying head sliders with an ultrasmall spacing

A corrected and approximate expression of the van der Waals pressure for a multilayered system was developed. The conventional expression cannot be applied to a general multilayered system, while the corrected expression can be applied to multilayered system composed of any materials. Applying the corrected expression to the analyses of the static characteristics of an inclined flying head slider, the dependences of the static load-carrying capacity and the static limit minimum spacing on the PFPE film thickness were clarified.