Identification: H1.02
Identification: K1.03
Identification: TT1.01
With the advent of high brilliance X-ray sources such as the so-called Third Generation Synchrotron Radiation Sources, the X-Ray Free Electron Laser Sources and the planned Diffraction Limited Storage Rings, experiments using coherent X-ray beams to study the structure and dynamics of materials are becoming increasingly popular. In this talk we will briefly review the use of X-ray Photon Correlation Spectroscopy at Grazing Incidence to study the dynamics of surfaces and interfaces. Applications have ranged from the study of liquid and polymeric surface fluctuations, to dynamics of buried inhomogeneous nanostructures, domains in magnetic films, reconfigurations at metal surfaces and non-equilibrium phenomena. We will also discuss possible future developments in this area of research.
This work has been supported by Grants Nos. DE-SC0003678 and DE-FG02-04ER46173 from Basic Energy Sciences, U.S. Department of Energy.
Identification: II1.02
Identification: AAA1.03
Identification: FF1.04
Identification: MM1.02
Identification: NN1.04
Emergent Lorentzian-, parity- and parabolic- symmetries are analytically proven to govern the facet statistics of slightly undercooled crystal-melt interfaces. Novel translating fronts whose asymptotic inclinations are offset from the thermodynamic Wulff angles are proven to provide the motive ordering force here.
For each thermodynamically unstable crystal interface that undergoes thermo-kinetic spinodal decomposition, we predict and numerically validate that the characteristic facet length is governed by a universal coarsening law, which includes not only a power law dependency on time, but also the dependence on the orientation of the intial unstable interface.
Identification: B2.01
Identification: FF2