Molecular Study of Dynamic Behavior between Head and Ultrathin Lubricant Film
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概要
- 論文の詳細を見る
The lubricant, perfluoropolyethers (PFPEs), has been modeled and analyzed using molecular dynamics simulations based on a coarse-grained bead-spring model. An ultrathin lubricant film with a thickness of 1-2 nm is coated on a disk to lubricate the head disk interface (HDI) of hard disk drives (HDDs). The retention performance of the lubricant film is studied, which is important to avoid a direct contact between the head and disk. The replenishment performance is also studied, which is essential to repair the lubricant film ruptured by a contact of the head. Finally, the typical phenomenon of touch down-take off hysteresis during the contact between head and disk is confirmed and analyzed because of the nanoscopic interactions in the HDI.
著者
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Liu Bo
Data Storage Institute
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Yu Shengkai
Data Storage Institute
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AMEMIYA Kensuke
Hitachi Asia Ltd, Research and Development Center
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WONG Chee
Data Storage Institute
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LIU Xiangjun
Hitachi Asia Ltd, Research and Development Center
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