Grazing-angle thermal emission (GATE) and thermal antenna array (TAA) for multi-channel thermal communications

摘要

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.

主权项

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.