Heat Dissipation Method Using Frequency-Selective Thin-Film Coatings for Cryogenic Electronic Circuits
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsSergio A. Montoya, Marcio C. de Andrade
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Abstract
A heat dissipation method comprising: providing a superconducting electronic circuit; applying a thin-film coating over a surface of the circuit, wherein the thin-film coating is mostly transparent to broadband electromagnetic radiation, has a thickness of less than 100 nanometers, and is designed to dissipate visible-spectrum radiation so as to reduce radiative heat absorption by the circuit; and enclosing the thin-film-coated circuit within a broadband-frequency-transparent enclosure that is capable of maintaining superconducting conditions within the enclosure such that the circuit is exposed to broadband-frequency radiation emanating from a location outside of the enclosure.
Claims20
A heat dissipation method comprising:
- providing a superconducting electronic circuit;
- applying a thin-film coating over a surface of the circuit, wherein the thin-film coating is mostly transparent to broadband electromagnetic radiation, has a thickness of less than 100 nanometers, and is designed to dissipate radiative heat so as to reduce radiative heat absorption by the circuit;
- and
- enclosing the thin-film-coated circuit within a mostly broadband-frequency-transparent enclosure that is capable of maintaining superconducting conditions within the enclosure;
- and
- exposing the circuit to broadband electromagnetic radiation emanating from a location outside of the enclosure.
A heat dissipation method comprising:
- providing a cryogenic electronic circuit;
- applying a multi-layer thin-film coating directly on a surface of the circuit, wherein the thin-film coating is mostly transparent to broadband-electromagnetic radiation, has a thickness of less than 100 nanometers, and is designed to dissipate one or more of visible-spectrum radiation and ultraviolet-spectrum radiation so as to reduce radiative heat absorption by the circuit, wherein each layer of the thin-film coating possesses different frequency-dependent permittivity and permeability characteristics;
- enclosing the thin-film-coated circuit within a broadband-frequency-transparent enclosure that is capable of maintaining cryogenic conditions within the enclosure;
- and
- exposing the circuit to broadband electromagnetic radiation emanating from a location outside of the enclosure.
Dependencies are inferred from the claim text.