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Inelastic Scattering at the Nanoscale

Claudio Masciovecchio 

Sinchrotrone Trieste, Trieste, Italy

Abstract

The physics of systems without translational invariance such as liquids, dense fluids and glasses, has been fascinating scientist for many years. Indeed, the understanding of the liquid-to-glass transition mechanism, thermal anomalies at low temperatures, divergence of the transport properties and relaxation phenomena, are challenges that deserve strong experimental and theoretical efforts.

The recent construction of an inelastic scattering instrument working with UV photons has opened up the possibility to study collective dynamics in an energy-momentum transfer region not accessible before, allowing engendering a large amount of new information about the complex behaviour of glass-forming materials.

I will also present the idea to extend the standard transient grating spectroscopy towards higher energies in a way such that nanoscale dynamics may be investigated. This would be extremely interesting to better understand the physics of disordered systems and could also allow sensitive probing of interfaces and extremely thin films, as well as heat transport and correlations in nanostructured materials.
 

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Presentation: Invited at E-MRS Fall Meeting 2007, Symposium I, by Claudio Masciovecchio
See On-line Journal of E-MRS Fall Meeting 2007

Submitted: 2007-05-15 10:23
Revised:   2009-06-07 00:44