ArticleScientific reports2016
Nonlinear deformation and localized failure of bacterial streamers in creeping flows.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Mesoscopic ring element growth and deformation induced biofilm streamer evolution in microfluidic channels.Water science and technology : a journal of the International Association on Water Pollution Research · 2024Article
- A microfluidic platform for characterizing the structure and rheology of biofilm streamers.Soft matter · 2022Article
- Impact of rheological properties on bacterial streamer formation.Journal of the Royal Society, Interface · 2021Article
- Bacterial biomechanics-From individual behaviors to biofilm and the gut flora.APL bioengineering · 2020Review
- Investigating fouling at the pore-scale using a microfluidic membrane mimic filtration system.Scientific reports · 2019Article
- Impact of bacterial streamers on biofouling of microfluidic filtration systems.Biomicrofluidics · 2018Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We investigate the failure of bacterial floc mediated streamers in a microfluidic device in a creeping flow regime using both experimental observations and analytical modeling. The quantification of streamer deformation and failure behavior is possible due to the use of 200 nm fluorescent polystyrene beads which firmly embed in the extracellular polymeric substance (EPS) and act as tracers. The streamers, which form soon after the commencement of flow begin to deviate from an apparently quiescent fully formed state in spite of steady background flow and limited mass accretion indicating significant mechanical nonlinearity. This nonlinear behavior shows distinct phases of deformation with mutually different characteristic times and comes to an end with a distinct localized failure of the streamer far from the walls. We investigate this deformation and failure behavior for two separate bacterial strains and develop a simplified but nonlinear analytical model describing the experimentally observed instability phenomena assuming a necking route to instability. Our model leads to a power law relation between the critical strain at failure and the fluid velocity scale exhibiting excellent qualitative and quantitative agreeing with the experimental rupture behavior.
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Registered trials
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