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Probing hidden interfaces of nanobubbles by elaborate optical and combined optical-force microscopy methods
Prof Holger Schonherr (University of Siegen, GE)

In the past decades long-lived gas surface nanobubbles (SNBs) were shown to reside e.g. at the solid-water. The long controversy of SNB stability and the on-going discussion about bulk nanobubbles may have been fuelled by ill-defined experimental conditions. In particular the role of contaminations and the adequate analysis of nanobubble properties are of paramount importance. Here we discuss new rigorous experimental protocols and time-resolved optical as well as combined optical – atomic force microscopy (AFM) approaches that ascertain that (i) indeed nanobubbles are being studied, which provides that (ii) the boundary conditions for the development of adequate theories are established.