title: Laser-induced direct space-selective precipitation of CdS nanoparticles embedded in a transparent silica xerogel.
abstract: A simple method, suitable for direct space-selective precipitation of semiconducting nanoparticles inside a transparent silica xerogel, is presented. The porous silica monoliths, prepared by the sol-gel method, are first loaded with specific CdS precursors. Then, the samples can be irradiated using either a femtosecond laser to generate the nanoparticles inside the deep volume of the silica matrix or a continuous visible laser to yield a nanocrystal growth under the surface. The resulting CdS nanoparticles are characterized using absorption and Raman spectroscopies, x-ray diffraction analysis and transmission electron microscopy.
authors.affiliation: Laboratoire de Physique des Lasers, Atomes et Molécules (CNRS, UMR 8523), Centre d'Etudes et de Recherches Lasers et Applications (CERLA), Université de Lille 1, Villeneuve d'Ascq, France. hicham.elhamzaoui@phlam.univ-lille1.fr
authors.forename: H
authors.initials: H
authors.lastname: El Hamzaoui
authors.forename: R
authors.initials: R
authors.lastname: Bernard
authors.forename: A
authors.initials: A
authors.lastname: Chahadih
authors.forename: F
authors.initials: F
authors.lastname: Chassagneux
authors.forename: L
authors.initials: L
authors.lastname: Bois
authors.forename: D
authors.initials: D
authors.lastname: Jegouso
authors.forename: L
authors.initials: L
authors.lastname: Hay
authors.forename: B
authors.initials: B
authors.lastname: Capoen
authors.forename: M
authors.initials: M
authors.lastname: Bouazaoui