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US 7,018,709 B2Granted
Contamination-resistant coated substrates
AssigneeLuna Innovations Incorporated
InventorsJanice P. Stevenson, Martin E. Rogers, Daniela M. Topasna
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Abstract
A coated substrate is claimed. The coating, disposed on the substrate, comprises a self-assembled film having at least one bilayer. Each bilayer comprises a polyanion electrolyte layer and a polycation electrolyte layer. The uppermost layer or exposed layer of the coating comprises a fluoroalkyl group. Each bilayer thickness ranges from about 0.1 nanometers to about 20 nanometers. The resulting coated substrate has a low surface energy and is hydrophobic and/or oleophobic.
Claims42
A coated substrate comprising:
- a substrate;
- a coating disposed on the substrate, wherein the coating comprises a self-assembled film having at least one bilayer, wherein each bilayer comprises a polyanion electrolyte layer and a polycation electrolyte layer, wherein an uppermost layer is a compound comprising a fluoroalkyl group;
- and
- wherein each bilayer thickness ranges from about 0.1 nanometers to about 20 nanometers and wherein the coating absorbs less than 1% of transmitted light between wavelengths of about 300 nanometers to about 3000 nanometers.
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A coated substrate prepared by:
- a) providing a substrate;
- b) applying a first electrolyte layer to the substrate;
- c) applying a second electrolyte later to the first electrolyte layer and allowing the second electrolyte layer to react with the first electrolyte layer to form a bilayer;
- d) applying a compound comprising a fluoroalkyl group to the bilayer to form a coating on the substrate, wherein the coating absorbs less than 1% of transmitted light between lengths of about 300 nanometers to about 3000 nanometers.
1 more element
Dependencies are inferred from the claim text.