ALPS seminar

# Peculiarities of light scattering by structural inhomogeneities in hydrogen bonded liquids

## by Natali Kuzkova (Kiew)

Wednesday, July 9, 2014 from to (Europe/Berlin)
at DESY Hamburg ( 3a )
 Description Disordered systems present condensed matter physics with one of its longest standing, mos t difficult and "grand challenge" problems of our time. The physical properties of systems such as hydrogen bonded liquids , in particular, water and glycerol solutions are far from well understood. Hydrogen bonded liquids can be considered as mediums that have nano-sized inhomogeneities , the existence of which is proved by a static and dynamic laser scattering methods . In this work we used advanced light scattering techniques for studying peculiarities of aqueous solutions. Supramolecular inhomogeneities , called clusters , often attributed to the high symmetry, long time existence and extraordinary properties that determine certain abnormalities of the media. Impacts of nano-sized inhomogeneities are mos t evident in the water. Direct optical methods for s tudying nano-sized clusters , unfortunately, does not exist. Therefore, it is necessary to use indirect methods , followed by an analysis of the common peculiarities . Structural inhomogeneties in hydrogen bonded liquids was intestigated by using low frequency Raman scattering, fluctuation spectroscopy and interferometric picosecond acoustics techniques. The influence of nano-sized inhomogeneities on the structure of liquids was analyzed.  Organised by babette.doebrich@desy.de