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.
| Language | English |
|---|---|
| Pages | 381-387 |
| Number of pages | 7 |
| Journal | Optical Materials Express |
| Volume | 6 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 7 Jan 2016 |
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Keywords
- surface plasmons
- diffraction gratings
- subwavelength structures
- polarization-selective devices
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Reflective low-sideband plasmonic structural colors. / Zheng, Jun; Ye, Zhi-Cheng; Sheng, Zheng-Ming.
In: Optical Materials Express, Vol. 6, No. 2, 07.01.2016, p. 381-387.Research output: Contribution to journal › Article
TY - JOUR
T1 - Reflective low-sideband plasmonic structural colors
AU - Zheng, Jun
AU - Ye, Zhi-Cheng
AU - Sheng, Zheng-Ming
N1 - © 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.
PY - 2016/1/7
Y1 - 2016/1/7
N2 - 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.
AB - 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.
KW - surface plasmons
KW - diffraction gratings
KW - subwavelength structures
KW - polarization-selective devices
UR - http://www.scopus.com/inward/record.url?scp=84957573285&partnerID=8YFLogxK
UR - https://www.osapublishing.org/ome/home.cfm
U2 - 10.1364/OME.6.000381
DO - 10.1364/OME.6.000381
M3 - Article
VL - 6
SP - 381
EP - 387
JO - Optical Materials Express
T2 - Optical Materials Express
JF - Optical Materials Express
SN - 2159-3930
IS - 2
ER -