High-density data storage

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. 

Fullerton EE, Margulies DT, Moser A, Takano K. Advanced magnetic recording media for high-density data storage. Solid State Technol 2001 449 87-94. 

Nanostructured polymers, in particular block copolymers, have immense potential in areas ranging from templating inorganic materials to permeation/ filtration media, nano-assaying, nanolithography and high density data storage media. 

For silver sodalltes a variety of physical and chemical properties, e.g. photochromy, barochromy or thermochromy, are summarized which could find possible utilization in high resolution imaging or high density data storage [64], The effects are observed following the reduction of silver... 

Ruger et al. (1987) discuss furthermore the possibility of using submicron magneto-optic domains for high-density data storage. 

Chui et al. [55] also describe high resolution silicon (piezo)resistive cantilevers designed not for SThM, but for high-density data storage. An array of probes are used to write 10-50 nm diameter pits in a spinning polymer coated silicon... 

Multilayer structures containing PEEK have been described for use in high density data storage devices [98]. The recording medium comprises a layer of a PEEK resin overlying a substrate, in which topographical states of the layer of the PEEK resin represent the data. The copolymers have two terminal ends with a phenylethynyl moiety. The crosslinking should be thermally reversible. 

DiPietro RA, Duerig UT, Frommer JE, Gots-mann BW, Hedrick JL, Knoll AW, et al. Thermally reversible cross-linked poly (aryl ether ketone) media and method for high density data storage. US Patent 8012541, assigned to International Business Machines Corporation, Armonk, NY 2011. 

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