Growth dynamics and light scattering of gold nanoparticles in situ synthesized at high concentration in thin polymer films

Corentin Guyot, Philippe Vandestrick, Ingrid Marenne, Olivier Deparis, Michel Voué

Résultats de recherche: Contribution à un journal/une revueArticle

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Résumé

Background: Numerous optical applications of nano-objects require a dispersion of the nanoparticles in a dielectric matrix. In order to achieve high particle concentrations, one can, as an alternative, directly grow the particles in a polymer or an inorganic film by, e.g., thermal annealing. Results: Simple laser reflection experiments showed that this growth process induced light scattering at the film/air interface. We report on this phenomenon, considering the growth dynamics of gold nanoparticles in a polymer film. The scattering of light was studied by measuring the bi-directional reflection distribution function. In parallel with the observation of enhanced scattering, imaging ellipsometry in dynamics mode showed that local values of the ellipsometric angles Ψ and Δ were strongly modified by the annealing process. Conclusion: A diffraction pattern corresponding to local modifications of the optical properties of the film gradually appeared, which turned out to be the signature of the growth of the Au nanoparticles. Moreover, the monitoring of the statistical distribution of the ellipsometric angles during annealing helped evidencing two regimes in the dynamics of the nanoparticle growth and in the optical response of the nanocomposite.

langue originaleAnglais
Pages (de - à)1768-1777
Nombre de pages10
journalBeilstein Journal of Nanotechnology
Volume10
Les DOIs
étatPublié - 1 janv. 2019

Empreinte digitale

Polymer films
Gold
Light scattering
light scattering
gold
Nanoparticles
Thin films
nanoparticles
polymers
Annealing
scattering
annealing
Scattering
Ellipsometry
statistical distributions
Diffraction patterns
ellipsometry
Distribution functions
Nanocomposites
nanocomposites

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title = "Growth dynamics and light scattering of gold nanoparticles in situ synthesized at high concentration in thin polymer films",
abstract = "Background: Numerous optical applications of nano-objects require a dispersion of the nanoparticles in a dielectric matrix. In order to achieve high particle concentrations, one can, as an alternative, directly grow the particles in a polymer or an inorganic film by, e.g., thermal annealing. Results: Simple laser reflection experiments showed that this growth process induced light scattering at the film/air interface. We report on this phenomenon, considering the growth dynamics of gold nanoparticles in a polymer film. The scattering of light was studied by measuring the bi-directional reflection distribution function. In parallel with the observation of enhanced scattering, imaging ellipsometry in dynamics mode showed that local values of the ellipsometric angles Ψ and Δ were strongly modified by the annealing process. Conclusion: A diffraction pattern corresponding to local modifications of the optical properties of the film gradually appeared, which turned out to be the signature of the growth of the Au nanoparticles. Moreover, the monitoring of the statistical distribution of the ellipsometric angles during annealing helped evidencing two regimes in the dynamics of the nanoparticle growth and in the optical response of the nanocomposite.",
keywords = "Gold, Imaging ellipsometry, Metal nanoparticles, Plasmonic nanocomposite, Polymer films",
author = "Corentin Guyot and Philippe Vandestrick and Ingrid Marenne and Olivier Deparis and Michel Vou{\'e}",
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Growth dynamics and light scattering of gold nanoparticles in situ synthesized at high concentration in thin polymer films. / Guyot, Corentin; Vandestrick, Philippe; Marenne, Ingrid; Deparis, Olivier; Voué, Michel.

Dans: Beilstein Journal of Nanotechnology, Vol 10, 01.01.2019, p. 1768-1777.

Résultats de recherche: Contribution à un journal/une revueArticle

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AU - Guyot, Corentin

AU - Vandestrick, Philippe

AU - Marenne, Ingrid

AU - Deparis, Olivier

AU - Voué, Michel

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Background: Numerous optical applications of nano-objects require a dispersion of the nanoparticles in a dielectric matrix. In order to achieve high particle concentrations, one can, as an alternative, directly grow the particles in a polymer or an inorganic film by, e.g., thermal annealing. Results: Simple laser reflection experiments showed that this growth process induced light scattering at the film/air interface. We report on this phenomenon, considering the growth dynamics of gold nanoparticles in a polymer film. The scattering of light was studied by measuring the bi-directional reflection distribution function. In parallel with the observation of enhanced scattering, imaging ellipsometry in dynamics mode showed that local values of the ellipsometric angles Ψ and Δ were strongly modified by the annealing process. Conclusion: A diffraction pattern corresponding to local modifications of the optical properties of the film gradually appeared, which turned out to be the signature of the growth of the Au nanoparticles. Moreover, the monitoring of the statistical distribution of the ellipsometric angles during annealing helped evidencing two regimes in the dynamics of the nanoparticle growth and in the optical response of the nanocomposite.

AB - Background: Numerous optical applications of nano-objects require a dispersion of the nanoparticles in a dielectric matrix. In order to achieve high particle concentrations, one can, as an alternative, directly grow the particles in a polymer or an inorganic film by, e.g., thermal annealing. Results: Simple laser reflection experiments showed that this growth process induced light scattering at the film/air interface. We report on this phenomenon, considering the growth dynamics of gold nanoparticles in a polymer film. The scattering of light was studied by measuring the bi-directional reflection distribution function. In parallel with the observation of enhanced scattering, imaging ellipsometry in dynamics mode showed that local values of the ellipsometric angles Ψ and Δ were strongly modified by the annealing process. Conclusion: A diffraction pattern corresponding to local modifications of the optical properties of the film gradually appeared, which turned out to be the signature of the growth of the Au nanoparticles. Moreover, the monitoring of the statistical distribution of the ellipsometric angles during annealing helped evidencing two regimes in the dynamics of the nanoparticle growth and in the optical response of the nanocomposite.

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