Lohse’s Physics of Fluids (PoF) group presently works on a variety of aspects in the fundamentals of fluid mechanics. The subjects include turbulence and multiphase flow, micro- and nanofluidics, granular matter, and biomedical flow. Both experimental, theoretical, and numerical methods are used. We closely collaborate with several companies, among them Océ and ASML. On the experimental side the key expertise of the group lies in high-speed imaging.