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An improved transparent optical member, preferably a glass sheet, comprising a nanostructure layer with an enhanced geometry and a balance of chemical (hydrophobic and hydrophilic) characteristics can be formed on a surface. The geometry and chemistry of the layer combine to obtain improved washabil

An improved transparent optical member, preferably a glass sheet, comprising a nanostructure layer with an enhanced geometry and a balance of chemical (hydrophobic and hydrophilic) characteristics can be formed on a surface. The geometry and chemistry of the layer combine to obtain improved washability. The layer can be manufactured by forming a layer comprising a silicon compound coating, including a silicon oxide coating, a silicon carbide coating, a silicon nitride coating or mixtures thereof. The coating can have a having a thickness of about 1 to 100 nm (10-9 meter). The layer has a preferred roughens from a random or ordered array of structure. The layer can be doped with di tri or polyvalent metal compounds. Such coatings have been found to have increased washability and such coatings have been found to preferentially bind to aqueous solutions applied to the glass. The hydrophilicity and preferential binding to aqueous solutions (wetability) tends to displace any soil deposited or contacted with the glass surface. As a result, the glass tends to associate with aqueous solutions and to disassociate soil when contacted with aqueous solutions substantially increasing the ease of cleaning the glass surface using water, aqueous cleaning solutions, etc.

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1. An optical member having improved washing or cleaning properties when contacted with an aqueous solution, the member comprising a sheet-like transparent substrate having a first side and a second side, at least the first side comprising a nanostructure coating comprising a silicon compound, a tit

1. An optical member having improved washing or cleaning properties when contacted with an aqueous solution, the member comprising a sheet-like transparent substrate having a first side and a second side, at least the first side comprising a nanostructure coating comprising a silicon compound, a titanium compound, a vanadium compound, a zirconium compound, a noble metal or compound thereof, an aluminum compound or mixtures thereof, said nanostructure coating having regions comprising a hydrophilic area and a hydrophobic area separated by a dimension less than about 500 nm, said nanostructure coating having a thickness sufficient to form a surface with improved washing or cleaning properties, said nanostructure coating additionally comprising a dopant in an amount effective to improve washing or cleaning properties.