2305 Deformation analyses of ultra-thin lubricant film using long wave equation

Abstract

In the head-disk interface (HDI) of a hard disk drive (HDD), lubricant deformation has an effect on flying attitude of head slider, as the flying height is decreasing. The time-evolution of lubricant deformation is analyzed using long wave theory. We analyzed various problems by long wave equation. Moreover, we established the analytical method for using both long wave equation and Molecular Gas-film Lubrication (MGL) equation with the gas-liquid lubrication problem. This analysis can be useful for HDI study and other tribological studies that need to investigate the behavior of lubricant on solid.