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Seagate patents nanotube lubricated HDDs

Posted on Tuesday, July 04 2006 @ 00:45:07 CEST by

Seagate filed a patent for a technology that could increase storage capacities of its hard drives by placing the write head even closer to the spinning platter than it already is today:
Using nanotubes, Seagate's patent involves coating the surface of a hard drive's platter with an extremely thin layer of extremely tough lubricant. The lubricant is designed to protect the actual magnetic medium, which in itself ranges from 2 to 50nm in thickness. Using this lubricant, Seagate will lower the read/write head to the point where it actually may come into contact with the platter. Seagate will also be introducing a heating mechanism such as a laser, which will heat up a small area of the platter allowing magnetic particles to be arranged more precisely -- thus allowing greater data densities. The laser itself will be positioned adjacent to the read and write head.

Since the lubricant layer is so thin however, the area that was heated will have some of the lubricant evaporated. To combat this, a reservoir that contains lubricant made of hundreds of thousands to millions of nanotubes is contained within the hard drive. Using precise pressure, the lubricant is evaporated into a vapor, and the vapor then deposits itself onto the area where there was depleted lubricant. According to Seagate, the vapor lubricant will take no more than a single disc rotation to complete the filling processes. The patent also says that hard drives will contain enough nanotube lubricant to last anywhere from 5 to 10 years.
More info at DailyTech.



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