Polymer dynamics, colloid dynamics, and electrokinetics, with emphasis on hydrodynamic interactions and simulation method development (Lattice Boltzmann, Molecular Dynamics, Monte Carlo). His scientific background comprises statistical physics, phase transitions, random processes and transport theory, hydrodynamics, polymer physics (in particular dynamics), and computer simulation methodology (Monte Carlo, Molecular Dynamics, Brownian Dynamics, Dissipative Particle Dynamics, Lattice Boltzmann).