Reflective low-sideband plasmonic structural colors

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Zheng, Jun and Ye, Zhi-Cheng and Sheng, Zheng-Ming (2016) Reflective low-sideband plasmonic structural colors. Optical Materials Express, 6 (2). pp. 381-387. ISSN 2159-3930 (https://doi.org/10.1364/OME.6.000381)

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Abstract

It is demonstrated experimentally that an aluminum (Al) nanowire grating structure on silicon substrates can produce low-side-band monochromatic peak when it reflects colored light in the transverse magnetic (TM) mode. The central wavelength of the reflection is shown to be sensitive to the incident angle, which leads to significant color shifts. Formation of the monochromatic peak is attributed to the surface plasmon resonance on the interface between Al and air, together with remarkable diffraction at shorter wavelengths and strong Fabry-Perot (F-P) resonance absorption by Al-surrounding nano-cavities and silicon substrate at longer wavelengths. In contrast, reflection in transverse electric (TE) mode does not show distinct wavelength selectivity due to the cut-off effect of the nano-cavities. The outstanding characters of the proposed structure with polarization dependence, high sensitivity to incident angle, high color rendering facilitate more compact and sophisticated color-filter-based devices for displays, anti-counterfeit, and sensing applications. In addition, the two-dimensional structure with thin grating thickness and high duty ratio tolerance is relatively easy for fabrication.

ORCID iDs

Zheng, Jun, Ye, Zhi-Cheng and Sheng, Zheng-Ming ORCID logoORCID: https://orcid.org/0000-0002-8823-9993;
  • Item type:Article
    ID code:55836
    Dates:
    Date
    Event
    7 January 2016
    Published
    20 November 2015
    Accepted
    Notes:© 2016 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
    Subjects:Science > Physics
    Department:Faculty of Science > Physics
    University of Strathclyde > University of Strathclyde
    Depositing user: Pure Administrator
    Date deposited:10 Mar 2016 14:26
    Last modified:12 Dec 2024 04:00
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/55836
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