Dynamics of bacterial streamers induced clogging in microfluidic devices.

摘要: Using a microfabricated porous media mimic platform, we investigated the clogging dynamics of bacterial biomass that accumulated in device due to formation streamers. Particularly, found existence distinct front which advanced via pronounced ‘stick-slip’ viscoelastic over solid surface micro pillar. Thus, streamer, surface, and background fluidic defined clear three-phase influencing these advancing dynamics. Interestingly, also once became substantial, contrary static homogenous saturation state, clogged exhibited an instability phenomena marked by localized streamer breakage failure leading extended water channels throughout mimic. These findings have implications for design fabrication biomedical devices membrane-type systems such as balloon catheters, stents filtration membranes prone bacteria induced well understanding growth proliferation natural soil rocks.