Metallic nanostructures for light trapping in energy-harvesting devices

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Composite Medium with Simultaneously Negative Permeability and Permittivity

D Smith, Willie J. Padilla, D Vier … (2000)

We demonstrate a composite medium, based on a periodic array of interspaced conducting nonmagnetic split ring resonators and continuous wires, that exhibits a frequency region in the microwave regime with simultaneously negative values of effective permeability &mgr;(eff)(omega) and permittivity varepsilon(eff)(omega). This structure forms a "left-handed" medium, for which it has been predicted that such phenomena as the Doppler effect, Cherenkov radiation, and even Snell's law are inverted. It is now possible through microwave experiments to test for these effects using this new metamaterial.

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Metamaterials and negative refractive index.

D Smith, J. Pendry, M. Wiltshire (2004)

Recently, artificially constructed metamaterials have become of considerable interest, because these materials can exhibit electromagnetic characteristics unlike those of any conventional materials. Artificial magnetism and negative refractive index are two specific types of behavior that have been demonstrated over the past few years, illustrating the new physics and new applications possible when we expand our view as to what constitutes a material. In this review, we describe recent advances in metamaterials research and discuss the potential that these materials may hold for realizing new and seemingly exotic electromagnetic phenomena.

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Gold helix photonic metamaterial as broadband circular polarizer.

Justyna K Gansel, Michael A Thiel, Michael S Rill … (2009)

We investigated propagation of light through a uniaxial photonic metamaterial composed of three-dimensional gold helices arranged on a two-dimensional square lattice. These nanostructures are fabricated via an approach based on direct laser writing into a positive-tone photoresist followed by electrochemical deposition of gold. For propagation of light along the helix axis, the structure blocks the circular polarization with the same handedness as the helices, whereas it transmits the other, for a frequency range exceeding one octave. The structure is scalable to other frequency ranges and can be used as a compact broadband circular polarizer.

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Journal

Title: Light: Science & Applications

Abbreviated Title: Light Sci Appl

Publisher: Springer Nature

ISSN (Electronic): 2047-7538

Publication date Created: April 25 2014

Publication date (Print): April 25 2014

Volume: 3

Issue: 4

Page: e161

Article

DOI: 10.1038/lsa.2014.42

SO-VID: 4375ddd4-744f-4dcb-bcbe-95417a844271

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Metallic nanostructures for light trapping in energy-harvesting devices

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Abstract

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Renewable Energy - Geothermal

Most cited references 83

Composite Medium with Simultaneously Negative Permeability and Permittivity

Metamaterials and negative refractive index.

Gold helix photonic metamaterial as broadband circular polarizer.

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