Patent ID: 11874480
Assignee: THE REGENTS OF THE UNIVERSITY OF MICHIGAN
Field: Optics (Instruments)
Classification: CPC G  B | IPC G

Claim 11:
12. A plasmonic device for lithography comprising:
an optical epsilon-near-zero (ENZ) metamaterial structure having an effective in-plane permittivity of approximately 0;
a photomask having a grating structure comprising a plurality of metallic rows spaced apart from one another to define a plurality of openings through which electromagnetic radiation passes;
an index matching layer disposed in the plurality of openings of the photomask;
a multilayered stack that comprises at least one metal layer and at least one dielectric material layer; and
a photosensitive material to be patterned by the electromagnetic radiation that is disposed between the optical epsilon-near-zero (ENZ) metamaterial structure and the multilayered stack, wherein the photomask is disposed adjacent to a first side of the optical epsilon-near-zero (ENZ) metamaterial structure and the photosensitive material is disposed adjacent to a second side of the optical epsilon-near-zero (ENZ) metamaterial structure opposite to the first side.