Terahertz frequency selective surfaces using heterostructures based on two-dimensional diffraction grating of single-walled carbon nanotubes  

作　　者：Pavel Evgenjevich Timoshenko Alexander Lerer Sergei Bernardovich Rochal Pavel E.Timoshenko 

机构地区：[1]Faculty of Physics,Southern Federal University,Rostov-on-Don,Russia [2]Southern Federal University,Rostov-on-Don,Russia

出　　处：《International Journal of Smart and Nano Materials》2023年第1期21-35,共15页国际智能和纳米材料杂志（英文）

基　　金：Russian Foundation for Basic Research(RFBR),project number 21-52-15034。

摘　　要：For single-walled carbon nanotubes(SWCNTs)with a length of 1-50μm,the surface plasmon-polariton(SPP)resonance is within the terahertz frequency range;therefore,SWCNT lattices can be used to design frequency-selective surface(FSS).A numerical model of electromagnetic wave diffraction on a two-dimensional periodic SWCNT lattice can be described by an integro-differential equation of the second-order with respect to the surface current along SWCNT.The equation can be solved by the Bubnov-Galerkin method.Frequency dependence of reflecting and transmitting electromagnetic waves for FSSs near the SPP resonance is studied numerically.It is shown that the resonances are within the lowerfrequency part of the terahertz range.We also estimate the relaxa-tion frequency of an individual SWCNT and demonstrate the applic-ability of the Kubo formula for graphene conductivity to array of strips similar in size to SWCNTs under consideration.

关 键 词：Carbon nanotubes GRATINGS GRAPHENE surface plasmon polaritons dielectric response functions 

分 类 号：TB383[一般工业技术—材料科学与工程]