réseaux sociaux

Séminaire du CINaM - jeudi 18 janvier 2018

jeudi 18 janvier 2018 à 14H00
CINaM - Salle Raymond Kern
Institut Lumière Matière, UMR5306 CNRS, Université Claude Bernard Lyon 1, France and Instituto de Física
Size effects in physically prepared metal nanoparticles

In this presentation I will discuss experimental methods for the fabrication of mono- and bi-metallic clusters and nanoparticles in the gas phase by physical means. When embedded in stable solid matrices, they form cluster-assembled nanostructures with variable and size-dependent properties. In particular I will address the following topics as examples:

Fabrication of cluster-assembled nanostructures: magnetron sputtering/aggregation versus laser vaporization.

Size effects in the magnetic anisotropy of embedded cobalt nanoparticles: from surface to shape.

Size effects in the electronic and vibrational relaxation in small silver clusters as evidenced by ultrafast femtosecond spectroscopy: the departure from the scalable size regime.

Study of size effects in the electronic structure of size-selected very small silver clusters: optical spectroscopy vs. Electron Energy Loss Spectroscopy.

Structural, optical and magnetic properties of bi-metallic FeAg nanoparticles: optical spectroscopy, magnetometry and synchrotron-based XMCD and EXAFS.

Invitation : Hansi Weissker - Entrée libre