Patent ID: 8709703

Claim:
A method of forming patterned structures for optical devices, comprising: using atomic layer deposition to form a first layer comprising a first material over a surface of a second layer, wherein forming the first layer comprises sequentially forming a plurality of monolayers of the first material over the surface of the second layer, wherein the second layer comprises a plurality of rows of a second material extending along a first direction and spaced from one another in a second direction orthogonal to the first direction, wherein the first layer conforms to the surface of the second layer, and wherein the first material includes a dielectric material having metal oxide; and removing portions of the first layer to produce a plurality of rows of the first material extending along the first direction and spaced from one another in the second direction and to form an optical device that includes the metal oxide; and removing portions of a third layer comprising a third material, where the portions of the third layer correspond to intervals between the plurality of rows of the second material so that removing the portions forms a plurality of rows of the third material extending along the first direction and spaced apart from one another, wherein the first and second materials are different.