A-14 表面張力の温度・膜厚依存性を考慮した液体超薄膜の変形特性 : 非定常線形長波方程式による3次元解析(口頭発表:ヘッド・ディスク・インターフェイス)

概要

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In the head-disk interface (HDI) of a hard disk drive (HDD), lubricant deformation affects flying characteristics of the head slider, as the flying height decreases. Therefore, it is very important to investigate the deformation and flow characteristics of lubricant on a recording disk. In particular, in heat-assisted magnetic recording (HAMR), laser heating of the lubricant induces surface tension distribution, which may cause deformation of the lubricant film. In this paper, we three-dimensionally analyzed the liquid film deformation caused by the temperature distribution by using the unsteady state and linearized long wave equation with consideration to temperature and film thickness dependence of the surface tension.
2010-03-16