A demonstration of terabit-per-square-inch densities for hard-disk media used self-assembling block co-polymers to perform "density multiplication." The technique, demonstrated by researchers from Hitachi Global Storage Technologies (San Jose, Calif.) and the University of Wisconsin in Madison, used current lithographic tools to pattern magnetic domains for a 250-megabit disk. A self-assembling block co-polymer was then added to divide each track into fourths, resulting in terabit-per-inch2 densities.
Text: http://www.eetimes.com/showArticle.jhtml?articleID=210004196
