Aluminum plasmonic multicolor meta-Hologram

Y.-W. Huang, W.T. Chen, W.-Y. Tsai, P.C. Wu, C.-M. Wang, G. Sun, Din-ping Tsai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

336 Citations (Scopus)

Abstract

© 2015 American Chemical Society.We report a phase-modulated multicolor meta-hologram (MCMH) that is polarization-dependent and capable of producing images in three primary colors. The MCMH structure is made of aluminum nanorods that are arranged in a two-dimensional array of pixels with surface plasmon resonances in red, green, and blue. The aluminum nanorod array is patterned on a 30 nm thick SiO<inf>2</inf> spacer layer sputtered on top of a 130 nm thick aluminum mirror. With proper design of the structure, we obtain resonances of narrow bandwidths to allow for implementation of the multicolor scheme. Taking into account of the wavelength dependence of the diffraction angle, we can project images to specific locations with predetermined size and order. With tuning of aluminum nanorod size, we demonstrate that the image color can be continuously varied across the visible spectrum.
Original languageEnglish
Pages (from-to)3122-3127
Number of pages6
JournalNano Letters
Volume15
Issue number5
DOIs
Publication statusPublished - 13 May 2015
Externally publishedYes

Keywords

  • aluminum plasmonics
  • holography
  • meta-hologram
  • Metasurfaces
  • multicolor
  • nanoantennas
  • polarization
  • switching

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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