Temperature control of terahertz metamaterials with liquid crystals

Liming Liu; Ilya V. Shadrivov; David A. Powell; Rezaur Raihan; Haroldo T. Hattori; Manuel Decker; Evgeny Mironov; Dragomir N. Neshev

doi:10.1109/TTHZ.2013.2285570

Temperature control of terahertz metamaterials with liquid crystals

Liming Liu, Ilya V. Shadrivov, David A. Powell, Rezaur Raihan, Haroldo T. Hattori, Manuel Decker, Evgeny Mironov, Dragomir N. Neshev

Research output: Contribution to journal › Article › peer-review

40 Citations (Scopus)

Abstract

We design and experimentally characterize terahertz (THz) electric split-ring-resonator metamaterials infiltrated with nematic liquid crystals (LCs). We demonstrate that the resonant response of such metamaterials can be tuned by temperature due to the change of the LC arrangement from nematic to isotropic phase. In particular, we show that the frequency tuning is strongly dependent on the initial LC orientation, with resonant frequency shifting towards lower frequencies for LC director perpendicular to the gap and towards higher frequencies for LC director parallel to the gap of the electric split ring resonators. Our results open new opportunities for the design of tunable THz filters based on LCs.

Original language	English
Article number	6649980
Pages (from-to)	827-831
Number of pages	5
Journal	IEEE Transactions on Terahertz Science and Technology
Volume	3
Issue number	6
DOIs	https://doi.org/10.1109/TTHZ.2013.2285570
Publication status	Published - Nov 2013

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title = "Temperature control of terahertz metamaterials with liquid crystals",

abstract = "We design and experimentally characterize terahertz (THz) electric split-ring-resonator metamaterials infiltrated with nematic liquid crystals (LCs). We demonstrate that the resonant response of such metamaterials can be tuned by temperature due to the change of the LC arrangement from nematic to isotropic phase. In particular, we show that the frequency tuning is strongly dependent on the initial LC orientation, with resonant frequency shifting towards lower frequencies for LC director perpendicular to the gap and towards higher frequencies for LC director parallel to the gap of the electric split ring resonators. Our results open new opportunities for the design of tunable THz filters based on LCs.",

keywords = "Liquid crystals (LCs), metamaterials, terahertz, thermal tuning",

author = "Liming Liu and Shadrivov, {Ilya V.} and Powell, {David A.} and Rezaur Raihan and Hattori, {Haroldo T.} and Manuel Decker and Evgeny Mironov and Neshev, {Dragomir N.}",

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T1 - Temperature control of terahertz metamaterials with liquid crystals

AU - Liu, Liming

AU - Shadrivov, Ilya V.

AU - Powell, David A.

AU - Raihan, Rezaur

AU - Hattori, Haroldo T.

AU - Decker, Manuel

AU - Mironov, Evgeny

AU - Neshev, Dragomir N.

PY - 2013/11

Y1 - 2013/11

N2 - We design and experimentally characterize terahertz (THz) electric split-ring-resonator metamaterials infiltrated with nematic liquid crystals (LCs). We demonstrate that the resonant response of such metamaterials can be tuned by temperature due to the change of the LC arrangement from nematic to isotropic phase. In particular, we show that the frequency tuning is strongly dependent on the initial LC orientation, with resonant frequency shifting towards lower frequencies for LC director perpendicular to the gap and towards higher frequencies for LC director parallel to the gap of the electric split ring resonators. Our results open new opportunities for the design of tunable THz filters based on LCs.

AB - We design and experimentally characterize terahertz (THz) electric split-ring-resonator metamaterials infiltrated with nematic liquid crystals (LCs). We demonstrate that the resonant response of such metamaterials can be tuned by temperature due to the change of the LC arrangement from nematic to isotropic phase. In particular, we show that the frequency tuning is strongly dependent on the initial LC orientation, with resonant frequency shifting towards lower frequencies for LC director perpendicular to the gap and towards higher frequencies for LC director parallel to the gap of the electric split ring resonators. Our results open new opportunities for the design of tunable THz filters based on LCs.

KW - Liquid crystals (LCs)

KW - metamaterials

KW - terahertz

KW - thermal tuning

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M3 - Article

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JO - IEEE Transactions on Terahertz Science and Technology

JF - IEEE Transactions on Terahertz Science and Technology

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Temperature control of terahertz metamaterials with liquid crystals

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