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US 11,236,239 B2Granted
Stable thermochromics polymer films with vanadium dioxide nanowires
AssigneeKonica Minolta Business Solutions U.S.A., Inc.
InventorJun Amano
Life of this patent
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Abstract
A thermochromic device includes a film and a number of vanadium dioxide nanowires disposed within the film. The film is manufactured by hot extruding a material that includes a polymer and a plurality of vanadium dioxide nanowires on a drum to form a rough film.
Claims10
A method of manufacturing a film, comprising:
- mixing a polymer and a plurality of vanadium dioxide nanowires;
- forming a finished film with the mixture of the polymer and the plurality of vanadium dioxide nanowires;
- heating the plurality of vanadium dioxide nanowires above a non-conducting to conductor phase transition temperature of the vanadium dioxide;
- applying an electric field to orient each of the plurality of vanadium dioxide nanowires while above the phase transition temperature;
- and
- modifying optical characteristics of the finished film with transmission characteristics and polarization dependence of the oriented plurality of vanadium dioxide nanowires.
3 more elements
Dependencies are inferred from the claim text.