ALPS seminar

Peculiarities of light scattering by structural inhomogeneities in hydrogen bonded liquids

by Natali Kuzkova (Kiew)

3a (DESY Hamburg)


DESY Hamburg

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.