
17 Dec
2003
17 Dec
'03
11:17 p.m.
Tim May writes:
Much more expensive would be various electron microscope-based imaging methods to directly image the domains and extract subtle signs of past write cycles.
I recently took a tour of Park Scientific, the scanning-probe microscopy people, in Sunnyvale. One of their demo-stations showed a small portion of a hard disk (taken with an AFM tip fitted with a small magnet to generate the force). Most impressive. (I did look closely at the edges of the track, but saw no sign of previous writes.) Cheers, Peter Monta pmonta@qualcomm.com Qualcomm, Inc./Globalstar