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Tunable magnetic response of metamaterials

Appl. Phys. Lett. 95, 033115 (2009); doi:10.1063/1.3182857

Published 23 July 2009

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Shumin Xiao,1 Uday K. Chettiar,1 Alexander V. Kildishev,1 Vladimir Drachev,1 I. C. Khoo,2 and Vladimir M. Shalaev1
1School of Electrical and Computer Engineering and Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA
2Department of Electrical Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
We demonstrate a thermally tunable optical metamaterial with negative permeability working in the visible range. By covering coupled metallic nanostrips with aligned nematic liquid crystals (NLCs), the magnetic response wavelength of the metamaterial is effectively tuned through control of the ambient temperature, changing the refractive index of LC via phase transitions. By increasing the ambient temperature from 20 to 50 °C, the magnetic response wavelength shifts from 650 to 632 nm. Numerical simulations confirm our tests and match the experimental observations well. ©2009 American Institute of Physics
History: Received 3 June 2009; accepted 26 June 2009; published 23 July 2009
Permalink: http://link.aip.org/link/?APPLAB/95/033115/1
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KEYWORDS and PACS

Keywords
PACS
  • 42.70.Df
    Liquid crystals (optical materials)
  • 78.20.Ci
    Optical constants
  • 78.40.Dw
    Visible and ultraviolet spectra of liquids
  • 64.70.mj
    Experimental studies of liquid crystal transitions
  • YEAR: 2009

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (18)
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