Rectangular-cavity resonances enhanced absorption in metallic-nanoshelled 2D rod arrays and 3D photonic crystals

  • Jiafang Li*
  • , M. D.Muntasir Hossain
  • , Baohua Jia
  • , Min Gu
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A metallic-nanoshelled rectangular dielectric rod is proposed to flexibly enhance and tune the structural absorption. Due to the ultra-small thickness of the metallic-nanoshells, electromagnetic (EM) waves can penetrate into the rods and rectangular cavity resonances can be formed. At the cavity resonances, the strong EM wave-matter interaction results in an enhancement in the structural absorption by more than one order of magnitude. By stacking the nanoshelled rods, a three-dimensional (3D) woodpile photonic crystal with both the rectangular cavity resonance and the photonic band gap effect is realized. As a result, the structural absorption of the nanoshelled 3D photonic crystal is significantly enhanced to ∼99.99% at the resonant wavelength.

Original languageEnglish
Article number043012
JournalNew Journal of Physics
Volume12
DOIs
Publication statusPublished - 1 Apr 2010
Externally publishedYes

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