基于二维表面极化激元效应的太赫兹调控材料

2D Dirac materials represented by graphene and topological insulators have acquired rapid development. The 2D Dirac plasmon polaritons and phonon polaritons in these materials have the frequency in terahertz region. This facilitates them great potentials at the applications of terahertz modulation. Furthermore, the terahertz modulators built on 2D Dirac materials might have more flexible controllability because the properties of 2D Dirac materials could be effectively modified by electrical, optical or thermal treatments. This project will focus on the investigation of emerging physical phenomena, properties and applications originating from the interactions between terahertz radiation and 2D materials. It is directly related to the aspect of “new materials for future information technology” of this project. To achieve effective modulation of terahertz radiation with tunable frequency, high modulation depth and fast modulation speed based on the 2D Diract plasmon polaritons and photon polariton effects with terahertz frequency in 2D Dirac materials.

以石墨烯和拓扑绝缘体为代表的二维狄拉克材料近年来发展迅速，此类材料中的二维狄拉克等离子极化激元与声子极化激元工作于太赫兹波段，使其在太赫兹光场调控方面具有极大可行性。同时，二维狄拉克材料的性质可通过电学、光学、热学等方式有效调控，因此基于二维狄拉克材料制备的太赫兹光场调控器件具有更加灵活的操控性。本项目将围绕太赫兹光场和二维材料相互作用中涉及到的新物理、新效应和新应用等关键科学问题开展研究工作，紧扣指南中“面向未来信息技术的新材料”研究方向。基于二维层状材料，尤其是二维狄拉克材料中工作于太赫兹波段的二维狄拉克等离子极化激元与声子极化激元效应，对太赫兹光场实现频率可调、调控深度高、调控速度快的有效调控。

以石墨烯和拓扑绝缘体为代表的二维狄拉克材料近年来发展迅速，此类材料中的二维狄拉克等离子极化激元与声子极化激元工作于太赫兹波段，使其在太赫兹光场调控方面具有极大可行性。同时，二维狄拉克材料的性质可通过电学、光学、热学等方式有效调控，因此基于二维狄拉克材料制备的太赫兹光场调控器件具有更加灵活的操控性。本项目基于二维层状材料，尤其是二维狄拉克材料中工作于太赫兹波段的二维狄拉克等离子极化激元与声子极化激元效应，对太赫兹光场实现频率可调、调控深度高、调控速度快的有效调控。以缺陷作为功能基元，通过对缺陷的精准调控，实现对太赫兹光场的有效调控。