E.coli bacteria attached to a sand grain: "Landing on a sand grain"

The movie shows E. coli bacteria (strain DSM 1116) attached to a grain of sand. The size of the sand grain is approx. 0.85 mm. The SEM (scanning electron microscope) pictures were taken within a laboratory experiment, measuring the influence of different concentration of E. coli bacteria to the Induced Polarization (IP) method in frequency- and time-domain (LINKIP project). The IP method can then be used to monitor groundwater bioremediation processes in the field (MIRACHL project). The movie was made by the colleagues from Lund Bioimaging Centre (LBIC).