Design and analysis of nanostructured subwavelength metamaterial absorber operating in the UV and visible spectral range

M. A. Baqir, Masih Ghasemi, Pankaj Kumar Choudhury, Burhanuddin Yeop Majlis

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

The design of broadband metamaterial perfect absorber (MPA) is proposed that operates in the ultraviolet and the visible regions of the electromagnetic spectrum. The MPA structure is of nanoscale in size and comprised of three layers-the U-shaped resonators (made of gold) of subwavelength size are embedded over a nanolayer of dielectric medium (silica glass), which is backed by a copper nanolayer surface. It is found that the proposed structure yields absorption peaks with the absorptivity over 99% in the aforesaid spectral range corresponding to both the transverse electric and the transverse magnetic polarizations of the incident electromagnetic wave. Furthermore, the angular dependence (of the incident light) of absorption characteristics is also analyzed along with the behavior of the absorber under varying thickness of nanosized resonators. It is expected that the proposed kind of perfect absorber would be highly useful in integrated heat-absorbing mediums that would include sensors, integrated photodetectors, thermal imaging, solar cells, etc.

Original languageEnglish
Pages (from-to)2408-2419
Number of pages12
JournalJournal of Electromagnetic Waves and Applications
Volume29
Issue number18
DOIs
Publication statusPublished - 12 Dec 2015

Fingerprint

Metamaterials
Resonators
absorbers
Infrared imaging
Fused silica
Photodetectors
Gold
Electromagnetic waves
Copper
Solar cells
resonators
Polarization
electromagnetic spectra
Sensors
silica glass
photometers
absorptivity
electromagnetic radiation
solar cells
gold

Keywords

  • metamaterial absorbers
  • perfect absorbers
  • subwavelength resonators

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)

Cite this

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AU - Ghasemi, Masih

AU - Choudhury, Pankaj Kumar

AU - Yeop Majlis, Burhanuddin

PY - 2015/12/12

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N2 - The design of broadband metamaterial perfect absorber (MPA) is proposed that operates in the ultraviolet and the visible regions of the electromagnetic spectrum. The MPA structure is of nanoscale in size and comprised of three layers-the U-shaped resonators (made of gold) of subwavelength size are embedded over a nanolayer of dielectric medium (silica glass), which is backed by a copper nanolayer surface. It is found that the proposed structure yields absorption peaks with the absorptivity over 99% in the aforesaid spectral range corresponding to both the transverse electric and the transverse magnetic polarizations of the incident electromagnetic wave. Furthermore, the angular dependence (of the incident light) of absorption characteristics is also analyzed along with the behavior of the absorber under varying thickness of nanosized resonators. It is expected that the proposed kind of perfect absorber would be highly useful in integrated heat-absorbing mediums that would include sensors, integrated photodetectors, thermal imaging, solar cells, etc.

AB - The design of broadband metamaterial perfect absorber (MPA) is proposed that operates in the ultraviolet and the visible regions of the electromagnetic spectrum. The MPA structure is of nanoscale in size and comprised of three layers-the U-shaped resonators (made of gold) of subwavelength size are embedded over a nanolayer of dielectric medium (silica glass), which is backed by a copper nanolayer surface. It is found that the proposed structure yields absorption peaks with the absorptivity over 99% in the aforesaid spectral range corresponding to both the transverse electric and the transverse magnetic polarizations of the incident electromagnetic wave. Furthermore, the angular dependence (of the incident light) of absorption characteristics is also analyzed along with the behavior of the absorber under varying thickness of nanosized resonators. It is expected that the proposed kind of perfect absorber would be highly useful in integrated heat-absorbing mediums that would include sensors, integrated photodetectors, thermal imaging, solar cells, etc.

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