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US 2007/0166513 A1Published application
Patterned Coatings Having Extreme Wetting Properties and Methods of Making
AssigneeMassachusetts Institute of Technology
InventorsXiaoxia Sheng, Lei Zhai, Michael Rubner, Robert Cohen
Life of this patent
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Abstract
A surface with superhydrophobic and hydrophilic or superhydrophilic regions can be made. The hydrophilic or superhydrophilic regions can selective collect water on the surface.
Claims26
A patterned surface comprising a substrate supporting a coating including polyelectrolyte multilayer, wherein the surface includes a superhydrophilic region and a superhydrophobic region.
A patterned surface comprising:
- a substrate supporting a superhydrophobic coating, the superhydrophobic coating including a high-roughness polyelectrolyte multilayer, a nanometer-scale feature associated with the high-roughness polyelectrolyte multilayer, and a hydrophobic material;
- and
- a region of reduced hydrophobicity superimposed on a predetermined region of the superhydrophobic coating.
A method of forming a patterned surface comprising:
- forming a superhydrophobic coating on a substrate;
- and
- contacting a predetermined region of the superhydrophobic coating with a wetting agent, wherein the predetermined region is rendered less hydrophobic.
Dependencies are inferred from the claim text.