Nathalie Destouches “Laser induced physico-chemistry and self-organization of metallic nanoparticles in TiO2 films” le jeudi 26 mars 2015 à 10h30 en salle Pierre Cotton

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Nathalie Destouches “Laser induced physico-chemistry and self-organization of metallic nanoparticles in TiO2 films” le jeudi 26 mars 2015 à 10h30 en salle Pierre Cotton

Nathalie Destouches, Laboratoire Hubert Curien, UMR CNRS/UJM, St Etienne

Abstract : Exciting the plasmon resonance of silver nanoparticles (NPs) embedded in a TiO2 thin film with a visible laser scanning the film surface can give rise to an interesting self-organization process. The latter leads to the generation of plasmonic metamaterials made of periodic nanoparticle arrays buried in the film, which exhibit singular dichroic optical properties. Their generation is a complex process involving various physico-chemical mechanisms, which are shown to be driven by both radiative and non-radiative decays of the localized surface plasmon resonance of Ag NPs.

Invitation : Claude AMRA - claude.amra chez fresnel.fr