Grazing-angle thermal emission (GATE) and thermal antenna array (TAA) for multi-channel thermal communications
First Claim
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1. A metamaterial coating for using on a hot object, comprising:
- at least one metallic subwavelength feature to redirect thermal radiation patterns from the hot object and to reduce a radiation cone or angular spread; and
at least one bandpass frequency filter to reduce a bandwidth of said thermal radiation, wherein said at least one metallic subwavelength feature and said at least one filter are associated with each other to produce a desired narrow cone and narrow bandwidth thermal emission into a grazing angle creating at least one hot spot, wherein each said hot spot acts as a highly directional thermal antenna (or arrays) radiating at different frequencies and different angles to achieve narrow-beam multidirectional and multi-frequency emissions.
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Abstract
Altering the direction of thermal radiation of any objects into any construction directions including grazing angles. Embodiments of the invention provide a new technique for thermal control and management.
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Citations
17 Claims
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1. A metamaterial coating for using on a hot object, comprising:
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at least one metallic subwavelength feature to redirect thermal radiation patterns from the hot object and to reduce a radiation cone or angular spread; and at least one bandpass frequency filter to reduce a bandwidth of said thermal radiation, wherein said at least one metallic subwavelength feature and said at least one filter are associated with each other to produce a desired narrow cone and narrow bandwidth thermal emission into a grazing angle creating at least one hot spot, wherein each said hot spot acts as a highly directional thermal antenna (or arrays) radiating at different frequencies and different angles to achieve narrow-beam multidirectional and multi-frequency emissions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for using metamaterial coatings on hot objects, comprising:
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coating at least one hot object having at least one metallic subwavelength feature to redirect thermal radiation from said hot object and to reduce the radiation cone or angular spread; and providing at least one bandpass frequency filter to reduce the bandwidth of said thermal radiation, wherein said at least one metallic subwavelength feature and said filter are associated with each other to produce a desired narrow cone and narrow bandwidth thermal emission into the grazing angle creating at least one hot spot, wherein each said hot spot acts as a highly directional thermal antenna radiating at different frequencies and different angles to achieve narrow-beam multidirectional and multi-frequency emissions.
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Specification