Details
| Original language | English |
|---|---|
| Pages (from-to) | 807-822 |
| Number of pages | 16 |
| Journal | Nanophotonics |
| Volume | 8 |
| Issue number | 5 |
| Publication status | Published - 4 Mar 2019 |
| Externally published | Yes |
Abstract
In this paper we discuss the optical response of laser-written plasmonic colours on silver coated via the atomic layer deposition of alumina. These colours are due to nanoparticles distributed on a flat surface and on a surface with periodic topographical features (i.e. ripples). The colours are observed to shift with increasing alumina film thickness. The colours produced by surfaces with ripples recover their original vibrancy and hue after the deposition of film of thickness ~60 nm, while colours arising from flat surfaces gradually fade and never recover. Analysis of the surfaces identifies periodic topographical features to be responsible for this behaviour. Finite-difference time-domain simulations unravel the role played by the alumina thickness in colour formation and confirm the rotations and recovery of colours for increasing alumina thickness. The coloured surfaces were evaluated for applications in colourimetric and radiometric sensing showing large sensitivities of up to 3.06/nm and 3.19 nm/nm, respectively. The colourimetric and radiometric sensitivities are observed to be colour dependent.
Keywords
- Colour sensors, Computional Nanophotonics, Nanostructures, Plasmonic colouring, Thin Films
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Biotechnology
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Engineering(all)
- Electrical and Electronic Engineering
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In: Nanophotonics, Vol. 8, No. 5, 04.03.2019, p. 807-822.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Laser-written colours on silver
T2 - optical effect of alumina coating
AU - Guay, Jean Michel
AU - Calà Lesina, Antonino
AU - Killaire, Graham
AU - Gordon, Peter G.
AU - Hahn, Choloong
AU - Barry, Sean T.
AU - Ramunno, Lora
AU - Berini, Pierre
AU - Weck, Arnaud
N1 - Funding information:: We acknowledge the Royal Canadian Mint, the Natural Sciences and Engineering Council of Canada, the Canada Research Chairs program, the Southern Ontario Smart Computing Innovation Platform (SOSCIP), and SciNet. We would also like to acknowledge Dr. Jaspreet Walia, Dr. Fabio Variola and Maël Chow-Cloutier at the University of Ottawa. We acknowledge the Royal Canadian Mint, the Natural Sciences and Engineering Council of Canada, the Canada Research Chairs program, the Southern Ontario Smart Computing Innovation Platform (SOSCIP), and SciNet. We would also like to acknowledge Dr. Jaspreet Walia, Dr. Fabio Variola and Mael Chow-Cloutier at the University of Ottawa.
PY - 2019/3/4
Y1 - 2019/3/4
N2 - In this paper we discuss the optical response of laser-written plasmonic colours on silver coated via the atomic layer deposition of alumina. These colours are due to nanoparticles distributed on a flat surface and on a surface with periodic topographical features (i.e. ripples). The colours are observed to shift with increasing alumina film thickness. The colours produced by surfaces with ripples recover their original vibrancy and hue after the deposition of film of thickness ~60 nm, while colours arising from flat surfaces gradually fade and never recover. Analysis of the surfaces identifies periodic topographical features to be responsible for this behaviour. Finite-difference time-domain simulations unravel the role played by the alumina thickness in colour formation and confirm the rotations and recovery of colours for increasing alumina thickness. The coloured surfaces were evaluated for applications in colourimetric and radiometric sensing showing large sensitivities of up to 3.06/nm and 3.19 nm/nm, respectively. The colourimetric and radiometric sensitivities are observed to be colour dependent.
AB - In this paper we discuss the optical response of laser-written plasmonic colours on silver coated via the atomic layer deposition of alumina. These colours are due to nanoparticles distributed on a flat surface and on a surface with periodic topographical features (i.e. ripples). The colours are observed to shift with increasing alumina film thickness. The colours produced by surfaces with ripples recover their original vibrancy and hue after the deposition of film of thickness ~60 nm, while colours arising from flat surfaces gradually fade and never recover. Analysis of the surfaces identifies periodic topographical features to be responsible for this behaviour. Finite-difference time-domain simulations unravel the role played by the alumina thickness in colour formation and confirm the rotations and recovery of colours for increasing alumina thickness. The coloured surfaces were evaluated for applications in colourimetric and radiometric sensing showing large sensitivities of up to 3.06/nm and 3.19 nm/nm, respectively. The colourimetric and radiometric sensitivities are observed to be colour dependent.
KW - Colour sensors
KW - Computional Nanophotonics
KW - Nanostructures
KW - Plasmonic colouring
KW - Thin Films
UR - http://www.scopus.com/inward/record.url?scp=85062849186&partnerID=8YFLogxK
U2 - 10.1515/nanoph-2018-0202
DO - 10.1515/nanoph-2018-0202
M3 - Article
AN - SCOPUS:85062849186
VL - 8
SP - 807
EP - 822
JO - Nanophotonics
JF - Nanophotonics
SN - 2192-8606
IS - 5
ER -