Axner Group (Popularity: ): Laser-based research on trace-element detection, microsurgery and cooling and trapping. Brzozka Group (Popularity: ): Ion-selective electrodes, Ion-sensitive field effect transistors and fibre optic chemical sensors. Campbell Group (Popularity: ): Physical chemistry of solid Surfaces: chemisorption, catalysis, and surface analysis. Lyon Group (Popularity: ): Hydrogel and nanoparticulate materials chemistry. Moerner Group (Popularity: ): Single-molecule spectroscopy and microscopy. Single-molecule biophysics and nanophotonics. Turro Group (Popularity: ): Photochemistry. Reactive intermediates. Xia Group (Popularity: ): Materials and surface chemistry. York Centre for Laser Spectroscopy (Popularity: ): Study of Van der Waals and other weakly bonded aromatic complexes. Prof. Dr. Jäger's Group Homepage (Popularity: ): Prof. Dr. Wolfgang Jäger's Laboratory for the Study of Intermolecular Interactions. Femtolab (Popularity: ): Study the interaction of short light pulses with matter.