Hopping trajectories due to long-range interactions determine surface accumulation of microalgae.

ABSTRACT: The accumulation of motile cells at solid interfaces increases the rate of surface encounters and the likelihood of surface attachment, leading to surface colonization and biofilm formation. The cell density distribution in the vicinity of a physical boundary is influenced by the interactions between the microswimmers and their physical environment, including hydrodynamic and steric interactions, as well as by stochastic effects. Disentangling the contributions of these effects remains an experimental challenge. Here, we use a custom-made four-camera view microscope to track a population of motile puller-type Chlamydomonas reinhardtii in a relatively unconstrained three-dimensional (3D) domain. Our experiments yield an extensive sample of 3D trajectories including cell-surface encou

SUBMITTER: Buchner AJ 

PROVIDER: S-EPMC8157945 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature