Title

Nanoimprinting Techniques for Large-Area Three-Dimensional Negative Index Metamaterials with Operation in the Visible and Telecom Bands

Authors

Authors

L. Gao; K. Shigeta; A. Vazquez-Guardado; C. J. Progler; G. R. Bogart; J. A. Rogers;D. Chanda

Comments

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Abbreviated Journal Title

ACS Nano

Keywords

nanoimprint lithography; negative index; metamaterials; IMPRINT LITHOGRAPHY; REFRACTIVE-INDEX; WAVELENGTHS; FREQUENCIES; REALIZATION; SCALE; Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience &; Nanotechnology; Materials Science, Multidisciplinary

Abstract

We report advances in materials, designs, and fabrication schemes for large-area negative index metamaterials (NIMs) in multilayer "fishnet" layouts that offer negative index behavior at wavelengths into the visible regime. A simple nanoimprinting scheme capable of implementation using standard, widely available tools followed by a subtractive, physical liftoff step provides an enabling route for the fabrication. Computational analysis of reflection and transmission measurements suggests that the resulting structures offer negative index of refraction that spans both the visible wavelength range (529-720 nm) and the telecommunication band (1.35-1.6 mu m). The data reveal that these large (>75 cm(2)) imprinted NIMs have predictable behaviors, good spatial uniformity in properties, and figures of merit as high as 4.3 in the visible range.

Journal Title

Acs Nano

Volume

8

Issue/Number

6

Publication Date

1-1-2014

Document Type

Article

Language

English

First Page

5535

Last Page

5542

WOS Identifier

WOS:000338089200018

ISSN

1936-0851

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