管状波导−单壁碳纳米管太赫兹透射光谱研究

Study on terahertz spectral characteristics of single-walled carbon nanotubes based on tubular waveguide

单壁碳纳米管是新一代透明导电材料,具有许多特殊的光学、电学和机械特性,在多种领域应用广泛。为此通过电弧法制备了单壁碳纳米管并进一步与有机玻璃(PMMA)管状波导集成,经实验和模拟研究了基于管状波导的单壁碳纳米管太赫兹透射光谱特性。研究结果表明,单壁碳纳米管可以使管状波导的太赫兹共振增强,可有效提高共振消光比,而石墨烯和炭黑对管状波导的太赫兹透射光谱几乎没有影响。

Single-walled carbon nanotubes are a new generation of transparent conductive materials.They have many special optical,electrical,and mechanical properties and can be widely used in many fields.In this paper,single-walled carbon nanotubes were prepared by arc method and further integrated with polymethyl methacrylate(PMMA)tubular waveguides.The terahertz transmission spectral characteristics of single-walled carbon nanotubes based on tubular waveguides were experimentally and simulated.The results show that single-walled carbon nanotubes can enhance the terahertz resonance of a tubular waveguide and increase the resonance extinction ratio effectively.Graphene and carbon black have little effect on the terahertz transmission spectrum of the tubular waveguide.Single-wall carbon nanotube-assisted integrated devices can be widely used in future terahertz science and technology.