Super-pyroelectric films and process of their preparation
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United States of America Patent
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Apr 16, 2013
Grant Date -
Mar 11, 2010
app pub date -
Jun 17, 2007
filing date -
Jun 15, 2006
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Expired
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Abstract
A film is presented having super-pyroelectric properties. The film comprises nano-sized grains being in a ferroelectric phase and having at least three different crystallographic variants defining at least two polycrystalline macro-domains. The film is shaped to define at least one film region with the macro-domains of a predetermined shape and different orientations of crystallographic axes with respect to the film's surface, thereby enabling to apply a temperature change to the film to induce movement of the polycrystalline macro-domains boundaries enabling super-pyroelectric properties.
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