SEMINAR ON PIXIE DUST : In each of the last five years, hard disk capacity has doubled, to keep costs low and storage of technophiles and allow users to PC data to sock away more. However, preservation buffs thought that the rate of growth could only go on much longer, and many have argued that the storage industry was about to hit the physical limit of greater capacity. But according to IBM, A new innovation will push that limit. The company is the first mass-produced Hard disk drive computer with a revolutionary new type magnetic layer is expected to eventually quadruple the data density The current products hard drive - the level of thought impossible, but the importance of continuing to feed the hungry information on the Internet economy. Consumers more information to help speed up the frequency of transition in home entertainment from passive analog technologies to interactive digital format. The key to IBM's Breakthrough threeatom new record-thick element ruthenium, a precious metal similar to the platinum, sandwiched between two magnetic layers. This is only a few atoms could have a dramatic effect caused some IBM scientists to refer to ruthenium layer informally "Pixie Dust". Well known technically as "Antiferromagnetically coupled (AFC) media," the new multilayer coating should allow hard drives to store 100 billion bits (gigabytes) of data per square inch of disk surface in 2003. Current hard drives can store 20 gigabits of data per square inch. IBM began shipping the Travelstar hard drives May 2001, which is capable of storing 25.7 gigabits per square inch. Discs delivered later this year should be able density 33% greater.

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