A hard disk drive (HDD)[note 2] is a data storage device used for storing and retrieving digital information using rapidly rotating discs (platters) coated with magnetic material. An HDD retains its data even when powered off. Data is read in a random-access manner, meaning individual blocks of data can be stored or retrieved in any order rather than just sequentially. An HDD consists of one or more rigid ("hard") rapidly rotating discs (platters) with magnetic heads arranged on a moving actuator arm to read and write data to the surfaces.
Data storage has reached great heights in the past two decades. You can now fit in a typical PC hard-drive thousands of CDs and millions of floppy disks (who else remembers these?). However, magnetic hard drive developers have almost reached the physical limit to where they can cram up data. Researchers at University of Texas at [...]
Miniaturization seems to be the buzzword of the 21st century in this global village. Thanks to the genius of German and American scientists who have pioneered a revolutionary technique that could be used to develop a new class of hard disk drives with nanomaterials which could store larger amounts of information in a tiny space [...]