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Proceedings Paper

Microwave transmission measurements through wire array photonic crystals
Author(s): Graeme Dewar; Nathan Souther; Michael Johnson
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Paper Abstract

We have measured the microwave transmission between 12 and 18 GHz through wire arrays formed into two dimensional square lattices. One array made of copper wire 0.14 mm in radius consisted of five rows by 21 columns having a lattice constant of 5.2 mm. This array exhibited a pass band above 15 GHz, in good agreement with the calculated plasma frequency found from an expression for the permittivity derived in the long wavelength limit. A second array was made with Nichrome wire of radius 18 μm and lattice constant 1.1 mm. This array was filled with dielectric loaded with powdered magnetite. A sample of this metamaterial 5.8 mm thick and with no externally applied magnetic field exhibited a pass band above 17 GHz. Implications for creating metamaterials with a negative index of refraction from wire arrays embedded in a magnetic host are discussed.

Paper Details

Date Published: 4 September 2008
PDF: 7 pages
Proc. SPIE 7029, Metamaterials: Fundamentals and Applications, 70290F (4 September 2008); doi: 10.1117/12.794803
Show Author Affiliations
Graeme Dewar, Univ. of North Dakota (United States)
Nathan Souther, Univ. of North Dakota (United States)
Michael Johnson, Univ. of North Dakota (United States)

Published in SPIE Proceedings Vol. 7029:
Metamaterials: Fundamentals and Applications
Mikhail A. Noginov; Nikolay I. Zheludev; Allan D. Boardman; Nader Engheta, Editor(s)

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