Woo J H, Choi E, Kang Boyoung, Kim E S, Kim J, Lee Y U, Hong Tae Y, Kim Jae H, Lee Ilha, Lee Young Hee, Wu J W
Department of Physics and Quantum Metamaterials Research Center, Ewha Womans University, Seoul 120-750, South Korea.
Opt Express. 2012 Jul 2;20(14):15440-51. doi: 10.1364/OE.20.015440.
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.
太赫兹超材料被用于研究当两种各向异性有机材料（液晶和碳纳米管）放置在超材料之上时，元共振的变化情况。在各向异性双分裂环谐振器和各向同性四重对称分裂环谐振器中，电场与有机材料之间的各向异性相互作用在元共振附近都会增强。在液晶中，观察到元共振频率发生偏移，磁光耦合导致了最大的各向异性偏移。在碳纳米管中，平行和垂直于纳米管方向的元共振吸收，经历了不同程度的元共振洛伦兹振荡器展宽。此处报道的研究开启了超材料作为各向异性材料传感器的应用。
