Technological Applications Hard Disk Drive

Further employment of the coarse-graining process to represent PFPE molecules with few parameter models (having the least 

Develop an LBM scheme with generalized SRS model to accurately describe the dynamics of PFPE systems. The model is based on the mathematically simple yet physically realistic LBM models capturing the bottom level (atomistic) information. This novel formulation is based on our system for electron-phonon coupling with two states (Ghai et al., 2005), which is analogous to spin system description for endgroups. 

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Molecularly thin lubricant film is an important application of nanoscale confined polymeric fluids, and is the focus of this chapter. Ultrathin lubricant films are necessary in high-density data storage to increase the reliability and performance of hard-disk drive (HDD) systems [2-4]. Spinoff and intermittent contact between the slider (or head) and the lubricated disk [ultrathin perfluoropolyether (PFPE) films are applied to the disk s carbon-overcoated surface, as shown in Fig. 1.1] cause loss and reflow of the lubricant film. The relevant HDD technology is summarized briefly in the end-of-chapter Appendix Section A.I, which provides an overview of how certain information technology devices are controlled by nanoscale chemistry. 

Microfabrication to a large extent relies on microelectronic processing technologies. Therefore, all aforementioned materials have found their way into various microsystem applications. Beyond that, other metals to be planarized like Ni or alloys like NiFe are regularly used for applications such as hard-disk drives. In microfabrication, the spectrum of materials is extended by including... 

Considerable interest still exists in the application of fluorine-containing cyclophosphazenes in lubricant technology. Recent advances in the use of N3P3(OC6H4F-4) (OC6H4CF3-3)6-n (n 2 code name X-IP) as lubricant either by itself or as an additive to perfluoropolyethers (PFPE) have been reviewed. Addition of X-IP to PFPE films reduces the critical dewetting thickness on amorphous nitrogenated carbon compared to that of neat PFPE. The influence of X-IP on the stabilization of the PFPE lubricant for the slider/disk interface in hard disk drives has been studied. Micro-phase separation of X-IP... 

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