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Etude statique et dynamique par réflectance linéaire et Génération de Second Harmonique de films de molécules et de nanoparticules métalliques à l'interface air / eau.

Abstract : The linear and nonlinear optical responses of two-dimensional molecular and nano metal particles assemblies were studied. In a first part, molecular films of DiA were studied, DiA being an amphiphilic molecule having a strong nonlinear response. The main conclusion of this section is the observation by second harmonic generation of chirality in the molecular aggregates initially achiral, at very high film compressions. In a second part, the linear and nonlinear optical studies of films of silver and gold particles have revealed the presence of aggregates the size and mobility of which depend on the average density of particles on the surface. The observation of strong fluctuations of the signal intensities measured during compression required a dynamic approach of these measurements highlighting the mechanisms in these films and the characteristic times associated.
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https://tel.archives-ouvertes.fr/tel-00150850
Contributor : Gaelle Martin-Gassin <>
Submitted on : Thursday, May 31, 2007 - 5:23:59 PM
Last modification on : Thursday, October 15, 2020 - 9:00:22 AM
Long-term archiving on: : Thursday, April 8, 2010 - 5:04:45 PM

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  • HAL Id : tel-00150850, version 1

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Gaelle Martin-Gassin. Etude statique et dynamique par réflectance linéaire et Génération de Second Harmonique de films de molécules et de nanoparticules métalliques à l'interface air / eau.. Analyse de données, Statistiques et Probabilités [physics.data-an]. Université Claude Bernard - Lyon I, 2007. Français. ⟨tel-00150850⟩

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