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 )
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.
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