Microsphere-Based Coatings for Radioactive Cooling Under Direct Sunlight
AssigneeStc.Unm
InventorsSang Eon Han, Sang M. Han
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Abstract
The present prevention provides a surface coating for cooling a surface by light scattering comprising a plurality of successive layers, each of the layers may be comprised of a plurality of spheres arranged to form a structure comprised of packed spheres. Each layer may have a different arrangement of packed spheres to create to a different light scattering property in each of the layers. The coating of the structures may also be formed by randomly packed spheres and the spheres may have a uniform diameter.
Claims18
A surface coating for cooling a surface by light scattering comprising:
- a plurality of successive layers;
- each of said layers comprised of a plurality of spheres arranged to form a structure comprised of packed or non-packed spheres;
- and
- each structure of each layer has a different arrangement of packed or non-packed spheres to create to a different light scattering property in each of said layers.
A method for cooling a substrate by applying a coating to the surface of the substrate comprising the steps of applying layers of spheres by randomly packing said spheres on said surface wherein the cooling power is enhanced by decreasing the sphere filling fraction to a filling fraction of less than 55% in each of said layers.
18-34. (canceled)
Dependencies are inferred from the claim text.