Reflection resonance switching in metamaterial twisted nematics cell

Y. U. Lee, E. Y. Choi, J. H. Woo, E. S. Kim, J. W. Wu

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


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.

Original languageEnglish
Pages (from-to)17492-17497
Number of pages6
JournalOptics Express
Issue number15
StatePublished - 29 Jul 2013


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