Wednesday, January 16, 2013, 4:00 pm — Berkner Hall Auditorium
Over the last two decades, X-ray Photon Correlation Spectroscopy (XPCS) has become an increasingly important technique in the study of dynamical phenomena in materials. Its applications range from the study of atomic diffusion in disordered metallic system to that of micron-scale fluctuations at polymer surfaces. Achieving a profound understanding of the dynamical properties of materials is arguably one of the most important elements that will enable a transition from a science based on observation to a science based on control - designing materials with specific "tailored" properties, drawing inspiration from biological systems to design novel materials with specific new or improved functionalities, developing materials that will address our society's grand energy challenges. As a consequence, the Coherent Hard X-ray beamline at the NSLS-II light source, one of the first six "project beamlines" to be built with the storage ring, will be dedicated to XPCS and the study of dynamics of materials using intense coherent beams. Here I will describe some of our recent results and possible future applications of XPCS aiming at a better understanding of the dynamics in complex soft materials. In particular I will focus on the dynamics of dense -"crowded"- colloidal suspensions and the dynamics of colloids under flow. Before finalizing, I will show preliminary results demonstrating a path towards measuring complex dynamics in biological systems and biological hybrid materials.
Hosted by: Allen Orville
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