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Anisotropic change in THz resonance of planar metamaterials by liquid crystal and carbon nanotube

Title
Anisotropic change in THz resonance of planar metamaterials by liquid crystal and carbon nanotube
Authors
Woo J.H.Choi E.Kang B.Kim E.S.Kim J.Lee Y.U.Hong T.Y.Kim J.H.Lee I.Lee Y.H.Wu J.W.
Ewha Authors
우정원
SCOPUS Author ID
우정원scopus
Issue Date
2012
Journal Title
Optics Express
ISSN
1094-4087JCR Link
Citation
vol. 20, no. 14, pp. 15440 - 15451
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
THz metamaterials are employed to examine changes in the meta-resonances when two anisotropic organic materials, liquid crystal and carbon nanotubes, are placed on top of metamaterials. In both anisotropic double split-ring resonators and isotropic four-fold symmetric split-ring resonators, anisotropic interactions between the electric field and organic materials are enhanced in the vicinity of meta-resonances. In liquid crystal, meta-resonance frequency shift is observed with the magneto-optical coupling giving rise to the largest anisotropic shift. In carbon nanotube, meta-resonance absorptions, parallel and perpendicular to nanotube direction, experience different amount of broadening of Lorentzian oscillator of meta-resonance. Investigation reported here opens the application of metamaterials as a sensor for anisotropic materials. © 2012 Optical Society of America.
DOI
10.1364/OE.20.015440
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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