3414 環境制御型原子間力顕微鏡を用いたプローブと超薄膜液体潤滑膜との相互作用に関する研究(S70-2 情報機器コンピュータメカニクス(2),S70 情報機器コンピュータメカニクス)

Abstract

Recently, it is important to clarify the interaction forces between slider and disk surfaces in a nanometer head-disk interface region in HDD, in order to achieve ultra-high magnetic recording density. This paper describes the interactions between Atomic Force Microscope (AFM) probe covered by conductive diamond thin film and ultra-thin liquid lubricant films. In this study, AFM was set in the environment controlled chamber. We investigated the difference in a response of the force curve on two types of lubricants (Zdol2000, A20H2000), relative humidity and lubricant film thickness. From the experimental results, it was found that meniscus bridge is easy to be extended at high relative humidity. Touch-down distance gradually increased with the rise in relative humidity and was greater as the lubricant film thickness increases. On the other hand, adhesive force gradually decreased with the rise in relative humidity as well as the lubricant thickness.