Jump to main content
Jump to site search


A dynamic preferred direction model for the self-organization dynamics of bacterial microfluidic pumping

Author affiliations

Abstract

It is known that some flagellated bacteria like Serratia marcescens, when deposited and affixed onto a surface to form a “bacterial carpet”, self-organize in a collective motion of the flagella that is capable of pumping fluid through microfluidic channels. We set up a continuum model comprising two macroscopic variables that is capable of describing this self-organization mechanism as well as quantifying it to the extent that an agreement with the experimentally observed channel width dependence of the pumping is reached. The activity is introduced through a collective angular velocity of the helical flagella rotation, which is an example of a dynamic macroscopic preferred direction. Our model supports and quantifies the view that the self-coordination is due to a positive feedback loop between the bacterial flagella and the local flow generated by their rotation. Moreover, our results indicate that this biological active system is operating close to the self-organization threshold.

Graphical abstract: A dynamic preferred direction model for the self-organization dynamics of bacterial microfluidic pumping

Back to tab navigation

Publication details

The article was received on 04 Jan 2019, accepted on 23 Jan 2019 and first published on 23 Jan 2019


Article type: Paper
DOI: 10.1039/C9SM00023B
Citation: Soft Matter, 2019, Advance Article

  •   Request permissions

    A dynamic preferred direction model for the self-organization dynamics of bacterial microfluidic pumping

    D. Svenšek, H. Pleiner and H. R. Brand, Soft Matter, 2019, Advance Article , DOI: 10.1039/C9SM00023B

Search articles by author

Spotlight

Advertisements