Details
| Original language | English |
|---|---|
| Article number | 1800189 |
| Journal | Advanced optical materials |
| Volume | 6 |
| Issue number | 17 |
| Publication status | Published - 25 Jun 2018 |
| Externally published | Yes |
Abstract
The tuning of 3D topographical features on silver for the production of plasmonic colors is reported. The topography is produced by applying closely time-spaced laser bursts. Using laser bursts increases the Chroma of the colors produced by up to 100% compared to the nonburst coloring method. By adjusting the energy distribution of the laser pulses in a burst, while maintaining the total burst energy constant, significantly different color palettes and topographical structures are produced. Scanning electron microscope analysis of the surfaces produced reveals the creation of three distinct sets of laser-induced periodic-like surface structures (LIPSS): low spatial frequency LIPSS (LSFL), high spatial frequency LIPSS (HSFL), and large LIPSS that have a period about 7× that of the laser wavelength. Two-temperature model simulations of silver irradiated by a laser burst show a significant increase in the electron–phonon coupling which is mainly responsible for the creation of LIPSS. Finite-difference time-domain simulations of a model of the surface, consisting of nanoparticles arranged on a sinusoidal-modulated surface of varying amplitude (0 to 150 nm) and period (200 and 1000 nm), elucidate the importance of the HSFL and LSFL structures for color formation, including the increase in Chroma (saturation) observed experimentally.
Keywords
- plasmonic colors, surface colorization, ultrafast laser machining
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Advanced optical materials, Vol. 6, No. 17, 1800189, 25.06.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Topography Tuning for Plasmonic Color Enhancement via Picosecond Laser Bursts
AU - Guay, Jean Michel
AU - Calà Lesina, Antonino
AU - Baxter, Joshua
AU - Killaire, Graham
AU - Ramunno, Lora
AU - Berini, Pierre
AU - Weck, Arnaud
N1 - Funding information: The authors 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. The authors would like to acknowledge Guillaume Côté, Martin Charron, and COOP student Mael Chow-Cloutier at the University of Ottawa.
PY - 2018/6/25
Y1 - 2018/6/25
N2 - The tuning of 3D topographical features on silver for the production of plasmonic colors is reported. The topography is produced by applying closely time-spaced laser bursts. Using laser bursts increases the Chroma of the colors produced by up to 100% compared to the nonburst coloring method. By adjusting the energy distribution of the laser pulses in a burst, while maintaining the total burst energy constant, significantly different color palettes and topographical structures are produced. Scanning electron microscope analysis of the surfaces produced reveals the creation of three distinct sets of laser-induced periodic-like surface structures (LIPSS): low spatial frequency LIPSS (LSFL), high spatial frequency LIPSS (HSFL), and large LIPSS that have a period about 7× that of the laser wavelength. Two-temperature model simulations of silver irradiated by a laser burst show a significant increase in the electron–phonon coupling which is mainly responsible for the creation of LIPSS. Finite-difference time-domain simulations of a model of the surface, consisting of nanoparticles arranged on a sinusoidal-modulated surface of varying amplitude (0 to 150 nm) and period (200 and 1000 nm), elucidate the importance of the HSFL and LSFL structures for color formation, including the increase in Chroma (saturation) observed experimentally.
AB - The tuning of 3D topographical features on silver for the production of plasmonic colors is reported. The topography is produced by applying closely time-spaced laser bursts. Using laser bursts increases the Chroma of the colors produced by up to 100% compared to the nonburst coloring method. By adjusting the energy distribution of the laser pulses in a burst, while maintaining the total burst energy constant, significantly different color palettes and topographical structures are produced. Scanning electron microscope analysis of the surfaces produced reveals the creation of three distinct sets of laser-induced periodic-like surface structures (LIPSS): low spatial frequency LIPSS (LSFL), high spatial frequency LIPSS (HSFL), and large LIPSS that have a period about 7× that of the laser wavelength. Two-temperature model simulations of silver irradiated by a laser burst show a significant increase in the electron–phonon coupling which is mainly responsible for the creation of LIPSS. Finite-difference time-domain simulations of a model of the surface, consisting of nanoparticles arranged on a sinusoidal-modulated surface of varying amplitude (0 to 150 nm) and period (200 and 1000 nm), elucidate the importance of the HSFL and LSFL structures for color formation, including the increase in Chroma (saturation) observed experimentally.
KW - plasmonic colors
KW - surface colorization
KW - ultrafast laser machining
UR - http://www.scopus.com/inward/record.url?scp=85052731910&partnerID=8YFLogxK
U2 - 10.1002/adom.201800189
DO - 10.1002/adom.201800189
M3 - Article
AN - SCOPUS:85052731910
VL - 6
JO - Advanced optical materials
JF - Advanced optical materials
SN - 2195-1071
IS - 17
M1 - 1800189
ER -