Wideband Modeling of Graphene-Based Structures at Different Temperatures Using Hybrid FDTD Method

Author

Da-Wei Wang ; Wen-Sheng Zhao ; Xiao-Qiang Gu ; Wenchao Chen ; Wen-Yan Yin

Author_Institution

State Key Lab. of MOI, Zhejiang Univ., Hangzhou, China

Volume

14

Issue

2

fYear

2015

fDate

Mar-15

Firstpage

250

Lastpage

258

Abstract

An efficient finite-difference time-domain (FDTD) algorithm is proposed for studying frequency- and temperature-dependent characteristics of some graphene-based structures, with auxiliary differential equation-FDTD method and its conformal modification technique integrated together for handling such atomically thin and electrically dispersive periodic geometries. Numerical results are presented to show their tunable transmittances, surface plasmon polarization-mode characteristics and Fano resonances, where the effects of chemical potential of graphene, biasing electric field strength, as well as operating temperature are captured and investigated in detail.

Keywords

chemical potential; differential equations; electric field effects; finite difference time-domain analysis; graphene; surface plasmons; C; Fano resonances; atomically thin dispersive periodic geometry; auxiliary differential equation-FDTD method; biasing electric field strength; chemical potential; conformal modification technique; electrically dispersive periodic geometry; finite-difference time-domain algorithm; frequency-dependent characteristics; graphene-based structures; surface plasmon polarization-mode characteristics; temperature-dependent characteristics; tunable transmittances; wideband modeling; Chemicals; Conductivity; Finite difference methods; Fitting; Graphene; Mathematical model; Time-domain analysis; Auxiliary differential equation finite-difference time-domain (ADE-FDTD); THz band; conformal technique; graphene; surface plasmon polarization (SPP); temperature; terahertz band; vector fitting;

fLanguage

English

Journal_Title

Nanotechnology, IEEE Transactions on

Publisher

ieee

ISSN

1536-125X

Type

jour

DOI

10.1109/TNANO.2014.2387576

Filename

7001270