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US 7,150,904 B2Granted
Composite, ordered material having sharp surface features
AssigneeUT-Battelle, LLC
InventorsBrian R. D'Urso, John T. Simpson
Life of this patent
Estimating the term…
Abstract
A composite material having sharp surface features includes a recessive phase and a protrusive phase, the recessive phase having a higher susceptibility to a preselected etchant than the protrusive phase, the composite material having an etched surface wherein the protrusive phase protrudes from the surface to form a sharp surface feature. The sharp surface features can be coated to make the surface super-hydrophobic.
Claims18
A composite article comprising:
- a support structure comprising a recessive phase matrix material and a protrusive phase material that forms a plurality of spaced apart, essentially parallel cores within said recessive phase matrix material, said recessive phase matrix material being different from protrusive phase material,
- said plurality of cores defining a plurality of spaced apart surface features, each of said surface features comprising a distal end opposite said support structure, integrated with said support structure, and protruding distally from a surface of said support structure, each of said surface features reducing in cross sectional area distally from said support structure to provide a lowest cross sectional area at said distal end,
- said recessive phase material supporting and separating said surface features and defining a contiguous recessed surface area between said surface features.
A composite article comprising:
- a support structure comprising a protrusive phase matrix material and a recessive phase material that forms a plurality of spaced apart, essentially parallel cores within said protrusive phase matrix material, said protrusive phase matrix material being different from said recessive phase material,
- said protrusive phase matrix material defining a plurality of spaced apart surface features, each of said surface features comprising a distal end opposite said support structure, integrated with said support structure, and protruding distally from a surface of said support structure, each of said surface features reducing in cross sectional area distally from said support structure to provide a lowest cross sectional area at said distal end,
- said plurality of spaced apart cores separating said surface features and defining recessed surface areas between said surface features,
- said protrusive phase material supporting and separating said recessed surface areas and defining a contiguous surface area between said recessed surface areas.
1 more element
Dependencies are inferred from the claim text.