Researchers at Graphene Flagship Partners have found that graphene can be used to produce ultra-high density hard disk drives (HDD), which can lead to the development of ultrahigh density magnetic data storage: a big jump from the current one terabit per square inch (Tb/in2) to 10 terabits over the same area. HDDs first appeared in the 1950s, but their use as storage devices in personal computers only took off from the mid-1980s. They have become ever smaller in size, and denser in terms of the...