Dynamic information storage or retrieval – Specific detail of information handling portion of system – Electrical modification or sensing of storage medium
Patent
1994-10-18
1996-04-30
Epps, Georgia Y.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Electrical modification or sensing of storage medium
369100, 369112, 250305, 250306, H01J 314, G11B 900
Patent
active
055131689
ABSTRACT:
There is provided an optical memory medium comprising a flat plate modified on the surface thereof by a photolytic residual group, an optical recording apparatus comprising an optical probe having a microscopic aperture on the leading end thereof, a light source, X-Y-Z position control means, and a controller for controlling the apparatus as whole and an apparatus for reading the optical memory medium comprising the optical memory medium, a friction detecting probe, an X-Y-Z position control means and a controller for controlling the apparatus as a whole. Further, information is written and read with high density less than the wavelength of light using an apparatus for writing to and reading from an optical memory piezoelectric medium comprising the optical memory piezoelectric medium constituted by a piezoelectric element modified on the surface thereof by a photolytic residual group, an optical probe having a microscopic aperture on the leading end thereof, a light source, an X-Y-Z position control means, a means for measuring the resonance characteristics of the piezoelectric element and a controller for controlling the apparatus as a whole.
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Patent Abstract of Japan, vol. 16, No. 436 (P-1419) 11 Sep. 1992.
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Applied Physics Letters, vol. 61, No. 2, 13 Jul. 1992, New York, pp. 142-144, E. Betzig et al., "Near-Field Magneto-Optics and High Density Data Storage".
Nature, vol. 359, 10 Sep. 1992, London, GB, pp. 133-135, R. M. Overney et al., "Friction Measurements on Phase-Separated Thin Film With a Modified Atomic Force Microscope".
Ataka Tatsuaki
Chiba Norio
Fujihira Masamichi
Muramatsu Hiroshi
Chu Kim-Kwok
Epps Georgia Y.
Fujihira Masamichi
Seiko Instruments Inc.
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