抄録
Recently, the head flying height between the slider and the disk becomes to be a few nanometer to improve the recording density of hard disk drives (HDDs). As the head flying height decreases, the slider-disk contacts increase and the role of the ultra-thin liquid lubricant film with 1-2 nm on the disk surface becomes important. In this study, we investigated the surface energy as well as the interaction with water molecules using conventional Z-tetraol2000 and novel lubricants of TA-30, QA-40, QG-40 and QX-40. It was found that the surface energy of novel lubricants is lower than that of Z-tetraol2000 and that the interactions of novel lubricants with water molecules is stronger than that of Z-tetraol2000, depending on the conformation of the lubricant molecules.
