论文标题
依赖温度液晶的超材料到调节介电元面共振的设计，制造和光谱表征
Design, fabrication, and spectral characterization of temperature-dependent liquid crystal-based metamaterial to tune dielectric metasurface resonances
论文作者
论文摘要
可调介电元表面表面纳米结构在光学应用中提供了令人难以置信的性能，因为它们的极化和工程性的非凡可调性是红外范围低损失的光的分散性。在本文中，我们在电信制度中借助于液晶的基于温度的基于温度的折射率，设计并通过实验测量了全次级亚波长硅纳米颗粒的可调节性。由列液晶（NLC）围绕的高介电纳米界组成的提出的结构，用数值软件模拟，并用预先对齐的材料组装，并通过傅立叶转换红外（FTIR）光谱进行光学测量。模拟结果与实际测量值兼容，表明可调性30nm。高电介质纳米风险的电气和磁共振模式由各向异性依赖温度的NLC量身定制。各向异性向各向同性列液晶晶体的相转换实现了所有介电元表面的两种模式的光谱调节，并修改了超材料结构的光学响应的对称性。
Tunable dielectric meta-surface nanostructures offer incredible performance in optical application due to their extraordinary tunability of the polarization and engineering the dispersion of light with low loss in infrared range. In this article, we designed and experimentally measured the tunability of all-dielectric subwavelength silicon nanoparticles with the help of the temperature-based refractive index of the liquid crystal in the telecom regime. The proposed structure composed of high dielectric nanodisk surrounded by nematic liquid crystal (NLC) is simulated with numerical software, assembled with pre-alignment material, and optically measured by Fourier-transform infrared (FTIR) spectroscopy. The simulated result is compatible with the practical measurements, shows that the tunability of 30nm is achieved. Electric and magnetic resonance modes of the high dielectric nanodisks are tailored in different rates by anisotropic temperature dependent NLC. The phase switching of anisotropic to isotropic nematic liquid crystal enables spectral tunning of the two modes of all dielectric metasurface and modifies the symmetry of the optical response of the metamaterial structure.
