Highly tunable polarized chromatic plasmonic films based on sub-wavelength grating templates

Jun Zheng, Zhi-Cheng Ye, Cheng-Liang Wang, Yi-Fei Fu, Xin-Ran Huang, Zheng-Ming Sheng

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A kind of polarized chromatic plasmonic film is proposed based on subwavelength grating structure, which enables “blue transmission” for the transverse electric light and “red transmission” for the transverse magnetic light. Metal–insulator–metal plasmonic waveguiding and metallic nanowire scattering are revealed to be responsible for the chromatic shift. Based upon the unique transmission spectrum characteristics of such films, polarized chromatic plasmonic tags (PCPTs) can be flexibly fabricated by patterning dielectric grating templates with designed figures and depositing appropriate thickness of metal. These PCPTs, simultaneously possessing directly visible unpolarized transmission colors and concealed distinct polarization‐dependent color shift, can be widely used as anti‐counterfeiting tags with higher security than the diffractive types of holograms.
Original languageEnglish
Article number1800661
Number of pages8
JournalAdvanced Materials Technologies
Volume4
Issue number5
Early online date18 Feb 2019
DOIs
Publication statusPublished - 1 May 2019

Keywords

  • plasmonic structural colors
  • sub-wavelength grating
  • metallic nanowire gratings
  • polarizer
  • color filter

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