# US 2013/0157008 A1 · Anti-fingerprint coatings > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0157008 A1 - Document ID: US20130157008A1 - Status: Published application - Kind: A1 - Application number: 13/767,244 - Filed: 2013-02-14 - Published: 2013-06-20 - Earliest claimed: 2010-10-08 - Assignees: UT-Battelle, LLC - Inventors: Tolga AYTUG; John T. SIMPSON - Web page: https://patentgrep.com/patent/US20130157008A1 ## CPC - C09D 5/00: Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced {(electrically insulating plastics, resins or waxes H01B3/30)}; Filling pastes - C03C 17/002: {for flat glass, e.g. float glass} - C03C 17/02: with glass (C03C17/34, C03C17/44 take precedence) - C03C 17/34: with at least two coatings having different compositions (C03C17/44 takes precedence) - C23C 14/10: Glass or silica - C23C 14/58: After-treatment - C23C 14/5806: {Thermal treatment} - C23C 14/5873: {Removal of material} - B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites - B82Y 40/00: Manufacture or treatment of nanostructures - C03C 2217/425: consisting of a porous layer - C03C 2217/76: Hydrophobic and oleophobic coatings - C03C 2218/33: by etching - Y10T 428/24355: Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) - B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An article having a nanostructured surface and a method of making the same are described. The article can include a substrate and a nanostructured layer bonded to the substrate. The nanostructured layer can include a plurality of spaced apart nanostructured features comprising a contiguous, protrusive material and the nanostructured features can be sufficiently small that the nanostructured layer is optically transparent. A continuous layer can be adhered to a plurality of surfaces of the nanostructured features to render the plurality of surfaces of the nanostructured features both hydrophobic and oleophobic with respect to fingerprint oil comprising eccrine secretions and sebaceous secretions, thereby providing an anti-fingerprinting characteristic to the article. ## Claims ### Claim 1 A method of forming an article with a nanostructured surface layer, comprising: providing a substrate; depositing a film on said substrate; decomposing said film to form a decomposed film; and etching said decomposed film to form a nanostructured layer comprising a plurality of spaced apart nanostructured features comprising a contiguous, protrusive material, wherein said nanostructured features are sufficiently small that said nanostructured layer is optically transparent, applying a continuous layer to a plurality of surfaces of the nanostructured features, wherein the continuous layer has a thickness of from 1 to 60 nm, and wherein the continuous layer renders the plurality of surfaces of the nanostructured features both hydrophobic and oleophobic with respect to fingerprint oil comprising eccrine secretions and sebaceous secretions. ### Claim 2 (depends on 1) The method according to claim 1, wherein the step of applying comprising depositing a solution comprising at least one polyphobic compound and a solvent to the nanostructured layer, wherein the at least one polyphobic compound is both hydrophobic and oleophobic. ### Claim 3 (depends on 2) The method according to claim 2, wherein the at least one polyphobic compound is selected from the group consisting of poly[2,2-bistrifluoromethyl-4,5-difluoro-1,3-dioxole-co-tetrafluoroethylene], poly[2,2,4-trifluoro-5-trifluoromethoxy-1,3,-dioxole-co-tetrafluoroethylene], and combinations thereof. ### Claim 4 (depends on 2) The method according to claim 2, wherein the solvent comprises a mixture of perfluoro(methyl-di-n-butyl)-amine and perfluoro(tri-n-butylamine). ### Claim 5 (depends on 2) The method according to claim 2, wherein the solution is deposited by spin coating. ### Claim 6 (depends on 1) The method according to claim 1, wherein said nanostructured features form a plurality of nanopores and at least some of said nanopores provide a flow through porosity from a top to a bottom of said nanostructured layer. ### Claim 7 (depends on 1) The method according to claim 1, wherein a width, length and height of each of said plurality of spaced apart nanostructured features ranges from 1 to 500 nm. ### Claim 8 (depends on 1) The method according to claim 1, wherein said decomposition step is performed under a non-oxidizing atmosphere. ### Claim 9 (depends on 1) The method according to claim 1, wherein said decomposed film comprises a first material and a second material different from said first material, wherein said first material is contiguous and said second material is contiguous, said first and second material forming an interpenetrating structure. ### Claim 10 (depends on 1) The method according to claim 1, wherein said nanostructured layer further comprises an etching residue disposed on said contiguous, protrusive material, said etching residue from a recessive contiguous material interpenetrating with said protruding material. ### Claim 11 (depends on 1) The method according to claim 1, wherein said nanostructured layer comprises nanopores formed by said plurality of spaced apart nanostructured features, and said method further comprises: pinning an oil within said nanopores. ### Claim 12 (depends on 1) The method according to claim 1, wherein said decomposing step comprises heating said film to a sufficient temperature for a sufficient time to produce a nanoscale spinodal decomposition. ### Claim 13 An article having a nanostructured surface layer, comprising: a substrate; and a nanostructured layer bonded to said substrate, wherein said nanostructured layer comprises a plurality of spaced apart nanostructured features comprising a contiguous, protrusive material, wherein said nanostructured features are sufficiently small that said nanostructured layer is optically transparent; a continuous layer adhered to a plurality of surfaces of the nanostructured features, wherein the continuous layer has a thickness of from 1 to 60 nm, and wherein the continuous layer renders the plurality of surfaces of the nanostructured features both hydrophobic and oleophobic with respect to fingerprint oil comprising eccrine secretions and sebaceous secretions. ### Claim 14 (depends on 13) The article according to claim 13, wherein the continuous layer comprises a polyphobic compound, wherein the at least one polyphobic compound is both hydrophobic and oleophobic. ### Claim 15 (depends on 14) The article according to claim 14, wherein the at least one polyphobic compound is selected from the group consisting of poly[2,2-bistrifluoromethyl-4,5-difluoro-1,3-dioxole-co-tetrafluoroethylene], poly[2,2,4-trifluoro-5-trifluoromethoxy-1,3,-dioxole ### Claim 16 (depends on 13) The article according to claim 13, further comprising an oil pinned in a plurality of nanopores formed by a said plurality of nanostructured features. ### Claim 17 (depends on 13) The article according to claim 13, wherein a width, length and height of each of said plurality of spaced apart nanostructured features ranges from 1 to 500 nm. ### Claim 18 (depends on 13) The article according to claim 13, wherein said nanostructured layer is atomically bonded to said substrate. ### Claim 19 (depends on 13) The article according to claim 13, wherein said nanostructured layer is chemically bonded directly to said substrate. ### Claim 20 (depends on 13) The article according to claim 13, wherein said plurality of spaced apart nanostructured features provide an anti-reflective surface.