Guided run-and-tumble active particles: wall accumulation and preferential deposition

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dc.contributor.authorSingh, Chamkor
dc.date.accessioned2024-01-21T10:42:33Z
dc.date.accessioned2024-08-13T12:44:36Z
dc.date.available2024-01-21T10:42:33Z
dc.date.available2024-08-13T12:44:36Z
dc.date.issued2021-09-20T00:00:00
dc.description.abstractBacterial biofilms cost an enormous amount of resources in the health, medical, and industrial sectors. To understand early biofilm formation, beginning from planktonic states of active suspensions (such asEscherichia coli) to micro-colonization, it is vital to study the mechanics of cell accumulation near surfaces and subsequent deposition. Variability in bacterial motion strategies and the presence of taxis fields make the problem even more multifaceted. In this study, analytical expressions for the density and angular distributions, mean orientation, and deposition rates in such bacterial suspensions are derived, with and without the effects of external guiding or taxis fields. The derived results are closely verified by simulations of confined active particles using run-and-tumble statistics from multiple past experiments and utilizing a preferential sticking probability model for deposition. The behavioral changes in cell running strategies are modeled by varying the run-time distribution from an exponential to a heavy-tailed one. It is found that the deposition rates can be altered significantly by a guiding torque but are less affected by a change in the cell running behavior. However, both the mechanisms alter the pair correlation function of the deposited structures. The factor behind the changes in the architecture of deposited biomass under a torque generating guiding field turns out to be an asymmetrical rotational drift of planktonic cells, which can be an important physical mechanism behind the organization in confined active particle suspensions. � The Royal Society of Chemistry 2021.en_US
dc.identifier.doi10.1039/d1sm00775k
dc.identifier.issn1744683X
dc.identifier.urihttp://10.2.3.109/handle/32116/3673
dc.identifier.urlhttp://xlink.rsc.org/?DOI=D1SM00775K
dc.language.isoen_USen_US
dc.publisherRoyal Society of Chemistryen_US
dc.subjectEscherichia colien_US
dc.subjectMotionen_US
dc.subjectRunningen_US
dc.subjectSuspensionsen_US
dc.subjectTorqueen_US
dc.subjectBiofilmsen_US
dc.subjectCellsen_US
dc.subjectCytologyen_US
dc.subjectSuspensions (fluids)en_US
dc.subjectActive particlesen_US
dc.subjectActive suspensionen_US
dc.subjectBacterial biofilmen_US
dc.subjectBacterial motionen_US
dc.subjectBiofilm formationen_US
dc.subjectCell accumulationen_US
dc.subjectColonisationen_US
dc.subjectIndustrial sectoren_US
dc.subjectNear surfacesen_US
dc.subjectParticle wallsen_US
dc.subjectEscherichia colien_US
dc.subjectmotionen_US
dc.subjectrunningen_US
dc.subjectsuspensionen_US
dc.subjecttorqueen_US
dc.subjectDeposition ratesen_US
dc.titleGuided run-and-tumble active particles: wall accumulation and preferential depositionen_US
dc.title.journalSoft Matteren_US
dc.typeArticleen_US
dc.type.accesstypeOpen Accessen_US

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