Gold Nanowires-Based Hyperbolic Metamaterial Multiband Absorber Operating in the Visible and Near-Infrared Regimes

M. A. Baqir, Pankaj Kumar Choudhury, M. J. Mughal

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Spectral feature of gold nanowires-based hyperbolic metamaterial (NWHMM) absorber was investigated. The absorber has NWHMM surface as the top layer, which is composed of periodically arranged arrays of subwavelength-sized gold (Au) nanowires (of circular cross-section) immersed in silicon dioxide (SiO2) dielectric medium. Such NWHMM surface is over a planar dielectric SiO2 substrate, backed by a perfect (bottom) reflector comprised of nano-sized bulk layer of silver (Ag). Considering the incidence of electromagnetic waves (in the range of 400–1400 nm wavelength) on the top NWHMM surface, the absorption spectrum of the proposed structure was analyzed for different thickness values (of surface), incidence angles, and also Au nanowire radius. The presence of multiple absorption peaks was noticed, which comes into existence due to different resonance conditions. The absorption features can be tuned by altering the operational conditions.

Original languageEnglish
JournalPlasmonics
DOIs
Publication statusAccepted/In press - 1 Jan 2018

Fingerprint

Nanowires
Metamaterials
Gold
Infrared radiation
Electromagnetic Radiation
Incidence
Silver
Silicon Dioxide
Electromagnetic waves
Absorption spectra
Wavelength
Substrates

Keywords

  • Complex mediums
  • Hyperbolic metamaterials
  • Metamaterial absorber
  • Metamaterials

ASJC Scopus subject areas

  • Biotechnology
  • Biophysics
  • Biochemistry

Cite this

Gold Nanowires-Based Hyperbolic Metamaterial Multiband Absorber Operating in the Visible and Near-Infrared Regimes. / Baqir, M. A.; Choudhury, Pankaj Kumar; Mughal, M. J.

In: Plasmonics, 01.01.2018.

Research output: Contribution to journalArticle

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