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Reflection resonance switching in metamaterial twisted nematics cell

Title
Reflection resonance switching in metamaterial twisted nematics cell
Authors
Lee Y.U.Choi E.Y.Woo J.H.Kim E.S.Wu J.W.
Ewha Authors
우정원
SCOPUS Author ID
우정원scopus
Issue Date
2013
Journal Title
Optics Express
ISSN
1094-4087JCR Link
Citation
vol. 21, no. 15, pp. 17492 - 17497
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Electric switching of reflection resonances at near-IR spectral range is experimentally demonstrated in a reflective metamaterial twisted nematic liquid crystal cell. Reflective metamaterial composed of nano-sized double-split ring resonator aperture is fabricated by a focused ion beam milling. Two-fold rotational symmetry of double-split ring resonators allows for two orthogonal polarization-dependent reflection resonances in the reflective metamaterial. With an external voltage of 10V across 12μm cell gap, a full switching is achieved between two reflection resonances. Dynamic measurements show the time constants of switch-on and switchoff are in the order of 100ms and 10ms, respectively. © 2013 Optical Society of America.
DOI
10.1364/OE.21.017492
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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