Optical: systems and elements – Optical computing without diffraction
Patent
1993-12-16
1996-09-10
Nguyen, Viet Q.
Optical: systems and elements
Optical computing without diffraction
359 36, 25229901, 252 629PZ, H01L 2710
Patent
active
055552196
ABSTRACT:
A ferroelectric material has hysteresis characteristics in the polarization--electric field relationship thereof, exhibits an antiferroelectric phase at room temperature, and carries out a structural phase transition from the antiferroelectric state to a ferroelectric phase with the application of an electric field thereto, and a phase transition electric field with which the antiferroelectric-to-ferroelectric phase transition is carried out is shifted to a lower electric field with the elevation of the temperature thereof, and a phase transition electric field with which a ferroelectric-to-antiferroelectric phase transition is carried out has a negative value. A semiconductor non-volatile memory, a rewritable optical recording medium, a highly integrated micro-displacement control device, and a shape memory device, each utilizing the above-mentioned ferroelectric material, are provided.
REFERENCES:
patent: 3973247 (1976-08-01), Kumada et al.
patent: 3990057 (1976-11-01), Kumada
patent: 5202054 (1993-04-01), Suzuki et al.
patent: 5374375 (1994-12-01), Yui et al.
Akiyama Yoshikazu
Kimura Sachiko
Nguyen Viet Q.
Ricoh & Company, Ltd.
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