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Tunabilty of terahertz metamaterials using liquid crystal

Using liquid crystals (LC) to tune terahertz (THz) metamaterials has been investigated over the past decade with some limited success. The issue has been that the range of tuning has been significantly lower than theoretically anticipated high tuning capabilities, the changes in properties are subject to the orientation of the LC molecules with respect to modulated electromagnetic field. In other words, the design of the alignment of the LC must be optimized specifically for each metamaterial design. The simple first order model must be replaced with representing the LC as an orientation changing, anisotropic uniaxial layer. By optimizing the LC alignment, significant advances will be possible in agile system for chemical and biological sensor, antenna designs, cloaking, and optical signal processing.