Multilayer coatings for optical ceramics
AssigneeRaytheon Company
InventorMichael W. Cason
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Abstract
An optical element includes an optical surface including a ceramic material. The optical element further includes a coating that includes a bifunctional molecule arranged on the optical surface. The bifunctional molecule includes a first functional group and a second functional group. The first functional group forms a covalent bond to the ceramic material of the optical surface, and the second functional group includes an aromatic functional group. The optical element further includes a carbon-containing material non-covalently bonded to the second functional group of the bifunctional molecule of the coating.
Claims14
An optical element, comprising:
- an optical surface comprising a ceramic material;
- a coating comprising a bifunctional molecule arranged on the optical surface, the bifunctional molecule comprising a first functional group and a second functional group, the first functional group forming a covalent bond to the ceramic material of the optical surface, and the second functional group comprising an aromatic functional group;
- and
- a hydrophobic hybridized carbon material non-covalently bonded to the second functional group of the bifunctional molecule of the coating;
- wherein the hydrophobic hybridized carbon material is non-covalently bonded to the second functional group of the bifunctional molecule of the coating by Pi stacking interactions;
- and
- wherein the hydrophobic hybridized carbon material is non-covalently bonded to the second functional group and is indirectly bonded to the ceramic material of the optical surface.
An optical element, comprising:
- an optical surface comprising zinc sulfide;
- a coating comprising a bifunctional molecule arranged on the optical surface, the bifunctional molecule comprising a first functional group and a second functional group, the first functional group forming a disulfide bond to the zinc sulfide of the optical surface, and the second functional group being a phenyl group;
- a hydrophobic hybridized carbon material non-covalently bonded to the phenyl group of the bifunctional molecule of the coating;
- and
- an encapsulation layer arranged on the hydrophobic hybridized carbon material;
- wherein the hydrophobic hybridized carbon material is non-covalently bonded to the phenyl group of the bifunctional molecule of the coating by Pi stacking interactions;
- and
- wherein the hydrophobic hybridized carbon material is non-covalently bonded to the second functional group and is indirectly bonded to the zinc sulfide of the optical surface.
The optical element 9, wherein the hydrophobic hybridized carbon material comprises a carbon nanotube.
Dependencies are inferred from the claim text.