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Fluorescence correlation spectroscopy (FCS) is a sensitive and selective technique for studying the mobility of fluorescent species, such as small molecules, macromolecules or nanoparticles, in various environments. We develop and apply FCS based approaches to address broad range of questions in polymer, colloid and interface science. By monitoring the mobility of fluorescent tracers we obtain information about the surrounding environment, which may range from a hydrogel to a fluid/fluid interface. Alternatively, we use FCS to measure hydrodynamic radius, fluorescence brightness and local concentration of fluorescently labeled colloids and macromolecules (polymers, copolymers, proteins, DNAs) and thus investigate conformational changes, mutual interactions or aggregation. Such studies are particularly useful for characterisation of drug nanocarriers in biological fluids, such as blood plasma or whole blood. Other research topics include nonlinear photonic crystals, microscopy of sliding droplets and thermo-mechanical properties of polymer materials.

Drug Nanocarriers


Nanocarrier drug delivery

Mobility in Polymer Networks


Mobility in polymer networks

Flow near surface, Slip


Flow near surface, Slip







Nonlinear Photonic Crystals


Diffusion in nanoporous media

Microscopy of Sliding Droplets


Mechanical properties of polymers