Switchable wavelength-selective and diffuse metamaterial absorber/emitter with a phase transition spacer layer

Hao Wang, Yue Yang, Liping Wang

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

We numerically demonstrate a switchable metamaterial absorber/emitter by thermally turning on or off the excitation of magnetic resonance upon the phase transition of vanadium dioxide (VO2). Perfect absorption peak exists around the wavelength of 5μ m when the excitation of magnetic resonance is supported with the insulating VO2 spacer layer. The wavelength-selective absorption is switched off when the magnetic resonance is disabled with metallic VO2 that shorts the top and bottom metallic structures. The resonance wavelength can be tuned with different geometry, and the switchable metamaterial exhibits diffuse behaviors at oblique angles. The results would facilitate the design of switchable metamaterials for active control in energy and sensing applications.

Original languageEnglish (US)
Article number071907
JournalApplied Physics Letters
Volume105
Issue number7
DOIs
StatePublished - Aug 18 2014

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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