[Ernest_at_the_Beach]

Design work is happening on the R/W Heads also....see this:

Hitachi halves hard drive head size

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By Tony Smith [More by this author]

15th October 2007 10:21 GMT

Hitachi has developed a hard drive read/write head that's half the size of the units found in today's top-of-the-line HDDs - a crucial step, it claimed, to delivering a 4TB desktop drive, albeit not until 2009 at the earliest.

Hitachi's new head may be tiny - 30-50nm in size, one two-thousandth of the thickness of a human hair - but the technology it's based on is something of a mouthful: Current Perpendicular-to-the-Plane Giant Magneto-Resistive (CPP-GMR).

[Quix]

interesting. Thanks.