Steffen Geisel

TL;DR: In situ shear rheological measurements of Bacillus subtilis biofilms grown between the plates of a rotational rheometer under well-controlled conditions relevant to many biofilm habitats are performed to help understand how different growth and measurement conditions contribute to the large variability of mechanical properties reported in the literature.

TL;DR: The influence of ECM viscoelasticity and substrate water potential on the expansion of biofilm colonies on wet surfaces at the air–solid interface, commonly found in natural environments, is demonstrated.

TL;DR: These observations underscore the importance of the rheological behavior of the carrier fluid in controlling bacterial transport, in particular, close to surfaces giving rise to velocity gradients, with potential consequences on surface colonization and biofilm formation in many naturally relevant microbial habitats.

TL;DR: It is demonstrated how the surface coverage in Pickering emulsions can be controlled at will, even for dense particulate layers going up to multilayers, and offers a general approach for control of composition of liquid-liquid interfaces in a variety of multiphase systems.