Fujitsu to increase hard drive capacity with advanced lubricants

Okay, very soon we'll be proud owners of hard drives with storage in excess of 2000 GB, but what about their stability? Fujitsu has answered this by bonding lubrication to drive platters ultimately increasing densities and adding robustness to the drives.

terabytes

Fujitsu claims to touch one terabit per square inch densities by 2010. To achieve the desired effect, Fujitsu has reduced the thickness of the lubricating layer, which protects corrosion of magnetic layer, and ultimately bringing the drive head closer to the platter resulting in tinier bits. The conventional four layers including a substrate layer, a magnetic layer, a protective layer, and a thin layer of lubricant, are now reduced to three by reducing the lubrication height and bonding it to the protective layer through ultraviolet radiation.

Fujitsu claims:

The lubricant was made to bond to the protective layer by exposure to ultraviolet light with a wavelength of less than 200nm. As a result, the surface free energy of the hard disk media that determines the performance of the media surface such as the absorption of contaminants and water was reduced to be equal or superior to that of Teflon.

Via: dailytech