6PM2-C-2 Theoretical analyses of van der Waals pressures acting between solid surfaces considering spatially periodic distribution of material properties : Pressure characteristics for two-dimensional material distribution

Abstract

Recording media with grooves such as discrete track media (DTM) and bit-patterned media (BPM) are considered to be some of the most promising media for achieving ultrahigh track densities. It is becoming increasingly important to analyze the static and dynamic characteristics of flying head sliders over DTM/BPM media using the molecular gas-film lubrication (MGL) equation. In this paper, we established an analysis method of van der Waals forces acting between slider and a disk with two-dimensional distribution of material properties by using Fourier series expansion. The characteristics of the van der Waals forces are quantitatively clarified.