October 2016: Dr. Kumar gives an invited talk at the Earth and Environmental Engineering Department at Columbia University.
Hydrodynamics & biofilms: We are studying biofilm formation inside porous microfluidic mimic devices. Under certain hydrodynamic conditions, fluid shear can cause the appearance of filamentous biofilms, called streamers. Streamers are act as precursors …Read more
Electrokinetics & biofilms: External electric fields can delay biofilm formation on certain substrates. The image shows the flocculation of enteroaggregative E. Coli. in response to the presence of an external electric field. This is an important discovery …Read more
Biofilms as soft matter: On moist surfaces, several bacterial species can form biofilms. These biofilms are colonies of bacteria that are encased in extra-cellular polymeric substances (EPS). These biofilms are excellent examples of natural soft matter. They possess …Read more