Search Results - superhydrophobic

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Micro-Trenches That Retain Trapped Gas Under High-Speed Water Flows (UCLA Case No. 2023-204)
Summary: UCLA researchers in the Department of Mechanical and Aerospace Engineering have developed a design of microstructured surfaces capable of retaining air pockets under water at flow speeds above 10 knots so that watercraft can travel with a reduced drag. Background: A major challenge limiting efficiency and speed of watercraft is the friction...
Published: 8/14/2024   |   Inventor(s): Chang-Jin Kim, Ning Yu
Keywords(s): boats, Drag (Physics), drag reduction, fluid mechanics, friction reduction, fuel efficiency, hull, Hydrophobic, liquid-air interface, marine applications, maritime, microtrenches, navy, planing hull, Seawater, ships, Superhydrophobic, water sports, watercraft
Category(s): Mechanical, Materials
Durable Colored Paint That Makes Surfaces Superhydrophobic and Self-Cleaning
Exhibits Higher Rates of Superhydrophobicity than Paints Without Added Color Pigments This durable colored paint supplies superhydrophobic and self-cleaning properties to a variety of surfaces. A material exhibits hydrophobic properties when its surface is difficult to wet due to the organization of its particles. This resistance to wetness brings about...
Published: 6/27/2021   |   Inventor(s): Wolfgang Sigmund, Yung-Chieh Hung
Keywords(s): Coating, Nanoparticle, PMMA, PVDF, Solubility, Solvent, Superhydrophobic
Category(s): Technology Classifications > Engineering > Chemical, Technology Classifications > Engineering > Materials
Transparent, Durable, Superhydrophobic Ceramic Coating
Silica Nanoparticles Applied to Substrate Surface Gives Superhydrophobic PropertiesThis transparent, durable ceramic coating can be applied to surfaces to supply superhydrophobic and self-cleaning properties. Superhydrophobic surfaces are those that have a water contact angle larger than 150 degrees. These types of surfaces, modeled after lotus plants,...
Published: 6/27/2021   |   Inventor(s): Wolfgang Sigmund, Yung-Chieh Hung
Keywords(s): Ceramics Nanoparticles, silica gel, Superhydrophobic, Transparent Coating
Category(s): Technology Classifications > Engineering, Technology Classifications > Engineering > Chemical, Technology Classifications > Engineering > Materials
Ceramic-Polymer Composite for More Durable Superhydrophobic and Oleophobic Surface Coating
Liquid Solution Is Easily Applied to Make a Variety of Substrates Repel Water, Oil, and DirtWhen applied to a surface, this ceramic-polymer composite results in articles with more durable superhydrophobic and oleophobic coatings. Surface cleaning and repainting of buildings, vehicles and energy collection devices can be costly and time consuming. For...
Published: 6/27/2021   |   Inventor(s): Wolfgang Sigmund, Shu-Hau Hsu, Ravi Vasudevan
Keywords(s): ceramic materials and powders, ceramic-polymer, Coating, Composites, Oleophobic, Paint, polymer, Superhydrophobic, thermoplastic, thermoset
Category(s): Technology Classifications > Engineering, Technology Classifications > Engineering > Materials
Superhydrophobic and Oleophobic Surface Treatment that Outlasts Available Coatings
Wear-Resistant Coating Repels Water and Oil, Making Surfaces Truly Self-CleaningThis surface treatment far exceeds the durability of available self-cleaning superhydrophobic and oleophobic coatings, increasing the lifetime of the coating and providing a significant marketing advantage. This water and oil repellent coating could be applied to surfaces...
Published: 6/27/2021   |   Inventor(s): Wolfgang Sigmund, Shu-Hau Hsu, Ravi Vasudevan
Keywords(s): Coatings, Composite, polymer, Superhydrophobic, thermoplastic, thermoset, wear resistant
Category(s): Technology Classifications > Engineering, Technology Classifications > Engineering > Materials
Superhydrophobic, Superoleophobic Spray Coating that Makes Surfaces Self-Cleaning
Alumina Nanoparticle Spray Helps Surfaces Repel Water, Oil, Dirt, and Corrosives This easily applied, highly transparent, superhydrophobic and superoleophobic coating makes glass and paint and a variety of surfaces self-cleaning. Several products on the market claim to repel water; this spray achieves superhydrophobicity and superoleophobicity, repelling...
Published: 6/27/2021   |   Inventor(s): Wolfgang Sigmund, Shu-Hau Hsu, Ravi Vasudevan
Keywords(s): Clean Tech, Superhydrophobic, Surface Modification, surface wettability, Transparent Coating
Category(s): Technology Classifications > Engineering > Materials