中文摘要：

液晶材料在太赫兹频谱的应用正在兴起。首先介绍了基于液晶材料设计的太赫兹功能器件的最新研究进展,然后分别从实验和理论角度总结了太赫兹光谱学的基本原理,最后展望了本领域未来的研究方向——研究液晶分子结构对其太赫兹光电特性的影响规律。

英文摘要：

Liquid crystals（LC） are becoming increasingly important for applications in the terahertz（THz） frequency range. Firstly, the latest research progresses of LC based THz function devices are introduced. Then, the basic principle of THz spectroscopy is summarized experimentally and theoretically. Finally, a further research direction, i.e., the relation between LC molecular structure and its THz optoelectronic characteristic is discussed in detail.