Tunable and Anisotropic Dual-Band Metamaterial Absorber Using Elliptical Graphene-Black Phosphorus Pairs.

Journal Article (Journal Article)

We numerically propose a dual-band absorber in the infrared region based on periodic elliptical graphene-black phosphorus (BP) pairs. The proposed absorber exhibits near-unity anisotropic absorption for both resonances due to the combination of graphene and BP. Each of the resonances is independently tunable via adjusting the geometric parameters. Besides, doping levels of graphene and BP can also tune resonant properties effectively. By analyzing the electric field distributions, surface plasmon resonances are observed in the graphene-BP ellipses, contributing to the strong and anisotropic plasmonic response. Moreover, the robustness for incident angles and polarization sensitivity are also illustrated.

Full Text

Duke Authors

Cited Authors

  • Cai, Y; Li, S; Zhou, Y; Wang, X; Xu, K-D; Guo, R; Joines, WT

Published Date

  • November 21, 2019

Published In

Volume / Issue

  • 14 / 1

Start / End Page

  • 346 -

PubMed ID

  • 31754903

Pubmed Central ID

  • PMC6872686

Electronic International Standard Serial Number (EISSN)

  • 1556-276X

International Standard Serial Number (ISSN)

  • 1931-7573

Digital Object Identifier (DOI)

  • 10.1186/s11671-019-3182-9

Language

  • eng