Hydrophilic DLC on substrate with UV exposure
AssigneeGuardian Industries Corp.
InventorVijayen S. Veerasamy
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Abstract
A substrate is coated with a layer(s) or coating(s) that includes, for example, amorphous carbon in a form of diamond-like carbon (DLC). In certain embodiments, the DLC inclusive layer may be doped with at least one polar inducing dopant (e.g., Boron, Nitrogen, and/or any other suitable polar inducing dopant) in order to make the layer more polar and thus more hydrophilic so as to have a lower contact angle θ. In other embodiments, where such doping is optional, the DLC may be exposed to ultraviolet (UV) radiation in a manner sufficient to cause the contact angle θ of the DLC layer to drop into a hydrophilic range (e.g., less than or equal to about 20 degrees).
Claims25
A coated glass article comprising:
- a glass substrate;
- a layer comprising hydrogenated diamond-like carbon (DLC) with sp3 carbon—carbon bonds provided on said glass substrate, wherein the layer comprising hydrogenated DLC includes from about 4 to 39% hydrogen and has an average density of at least about 2.4 gms/cm3;
- and
- wherein said layer comprising DLC is ultraviolet (UV) radiation exposed so as to cause the layer to have a contact angle θ with a drop of water thereon of no greater than about 20 degrees.
A coated article comprising:
- a hydrogenated DLC inclusive layer supported by a substrate, wherein the hydrogenated DLC inclusive layer has a contact angle θ less than or equal to 15 degrees, includes from about 4 to 39% hydrogen, and has an average density of at least about 2.4 gms/cm3.
A coated glass article comprising:
- a glass substrate;
- a layer comprising hydrogenated diamond-like carbon (DLC) with sp3 carbon—carbon bonds provided on said glass substrate, wherein the layer comprising hydrogenated DLC includes from about 4 to 39% hydrogen and has an average density of at least about 2.4 gms/cm3;
- and
- wherein said layer comprising hydrogenated DLC has a contact angle θ of no greater than about 20 degrees.
Dependencies are inferred from the claim text.