Effect of motility on the transport of bacteria populations through a porous medium
- Autores
- Creppy, Adama; Clément, Eric; Douarche, Carine; D'angelo, María Verónica; Auradou, Harold
- Año de publicación
- 2019
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The role of activity on the hydrodynamic dispersion of bacteria in a model porous medium is studied by tracking thousands of bacteria in a microfluidic chip containing randomly placed pillars. We first evaluate the spreading dynamics of two populations of motile and nonmotile bacteria injected at different flow rates. In both cases, we observe that the mean and the variance of the distances covered by the bacteria vary linearly with time and flow velocity, a result qualitatively consistent with the standard geometric dispersion picture. However, quantitatively, the motile bacteria display a systematic retardation effect when compared to the nonmotile ones. Furthermore, the shape of the traveled distance distribution in the flow direction differs significantly for both the motile and the nonmotile strains, hence probing a markedly different exploration process. For the nonmotile bacteria, the distribution is Gaussian, whereas for the motile ones, the distribution displays a positive skewness and spreads exponentially downstream akin to a Γ distribution. The detailed microscopic study of the trajectories reveals two salient effects characterizing the exploration process of motile bacteria: (1) the emergence of an "active" retention effect due to an extended exploration of the pore surfaces and (2) an enhanced spreading at the forefront due to the transport of bacteria along "fast tracks" where they acquire a velocity larger than the local flow velocity. We finally discuss the practical applications of these effects on the large-scale macroscopic transfer and contamination processes caused by microbes in natural environments.
Fil: Creppy, Adama. Centre National de la Recherche Scientifique; Francia
Fil: Clément, Eric. Université Paris Diderot - Paris 7; Francia
Fil: Douarche, Carine. Centre National de la Recherche Scientifique; Francia
Fil: D'angelo, María Verónica. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Auradou, Harold. Centre National de la Recherche Scientifique; Francia - Materia
-
MOTILITY OF BACTERIA
TRANSPORT
POROUS MEDIA - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/117493
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Effect of motility on the transport of bacteria populations through a porous mediumCreppy, AdamaClément, EricDouarche, CarineD'angelo, María VerónicaAuradou, HaroldMOTILITY OF BACTERIATRANSPORTPOROUS MEDIAhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The role of activity on the hydrodynamic dispersion of bacteria in a model porous medium is studied by tracking thousands of bacteria in a microfluidic chip containing randomly placed pillars. We first evaluate the spreading dynamics of two populations of motile and nonmotile bacteria injected at different flow rates. In both cases, we observe that the mean and the variance of the distances covered by the bacteria vary linearly with time and flow velocity, a result qualitatively consistent with the standard geometric dispersion picture. However, quantitatively, the motile bacteria display a systematic retardation effect when compared to the nonmotile ones. Furthermore, the shape of the traveled distance distribution in the flow direction differs significantly for both the motile and the nonmotile strains, hence probing a markedly different exploration process. For the nonmotile bacteria, the distribution is Gaussian, whereas for the motile ones, the distribution displays a positive skewness and spreads exponentially downstream akin to a Γ distribution. The detailed microscopic study of the trajectories reveals two salient effects characterizing the exploration process of motile bacteria: (1) the emergence of an "active" retention effect due to an extended exploration of the pore surfaces and (2) an enhanced spreading at the forefront due to the transport of bacteria along "fast tracks" where they acquire a velocity larger than the local flow velocity. We finally discuss the practical applications of these effects on the large-scale macroscopic transfer and contamination processes caused by microbes in natural environments.Fil: Creppy, Adama. Centre National de la Recherche Scientifique; FranciaFil: Clément, Eric. Université Paris Diderot - Paris 7; FranciaFil: Douarche, Carine. Centre National de la Recherche Scientifique; FranciaFil: D'angelo, María Verónica. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Auradou, Harold. Centre National de la Recherche Scientifique; FranciaAmerican Physical Society2019-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/117493Creppy, Adama; Clément, Eric; Douarche, Carine; D'angelo, María Verónica; Auradou, Harold; Effect of motility on the transport of bacteria populations through a porous medium; American Physical Society; Physical Review Fluids; 4; 1; 1-2019; 1-162469-990XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevFluids.4.013102info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prfluids/abstract/10.1103/PhysRevFluids.4.013102info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:31:31Zoai:ri.conicet.gov.ar:11336/117493instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:31:31.686CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Effect of motility on the transport of bacteria populations through a porous medium |
title |
Effect of motility on the transport of bacteria populations through a porous medium |
spellingShingle |
Effect of motility on the transport of bacteria populations through a porous medium Creppy, Adama MOTILITY OF BACTERIA TRANSPORT POROUS MEDIA |
title_short |
Effect of motility on the transport of bacteria populations through a porous medium |
title_full |
Effect of motility on the transport of bacteria populations through a porous medium |
title_fullStr |
Effect of motility on the transport of bacteria populations through a porous medium |
title_full_unstemmed |
Effect of motility on the transport of bacteria populations through a porous medium |
title_sort |
Effect of motility on the transport of bacteria populations through a porous medium |
dc.creator.none.fl_str_mv |
Creppy, Adama Clément, Eric Douarche, Carine D'angelo, María Verónica Auradou, Harold |
author |
Creppy, Adama |
author_facet |
Creppy, Adama Clément, Eric Douarche, Carine D'angelo, María Verónica Auradou, Harold |
author_role |
author |
author2 |
Clément, Eric Douarche, Carine D'angelo, María Verónica Auradou, Harold |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
MOTILITY OF BACTERIA TRANSPORT POROUS MEDIA |
topic |
MOTILITY OF BACTERIA TRANSPORT POROUS MEDIA |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The role of activity on the hydrodynamic dispersion of bacteria in a model porous medium is studied by tracking thousands of bacteria in a microfluidic chip containing randomly placed pillars. We first evaluate the spreading dynamics of two populations of motile and nonmotile bacteria injected at different flow rates. In both cases, we observe that the mean and the variance of the distances covered by the bacteria vary linearly with time and flow velocity, a result qualitatively consistent with the standard geometric dispersion picture. However, quantitatively, the motile bacteria display a systematic retardation effect when compared to the nonmotile ones. Furthermore, the shape of the traveled distance distribution in the flow direction differs significantly for both the motile and the nonmotile strains, hence probing a markedly different exploration process. For the nonmotile bacteria, the distribution is Gaussian, whereas for the motile ones, the distribution displays a positive skewness and spreads exponentially downstream akin to a Γ distribution. The detailed microscopic study of the trajectories reveals two salient effects characterizing the exploration process of motile bacteria: (1) the emergence of an "active" retention effect due to an extended exploration of the pore surfaces and (2) an enhanced spreading at the forefront due to the transport of bacteria along "fast tracks" where they acquire a velocity larger than the local flow velocity. We finally discuss the practical applications of these effects on the large-scale macroscopic transfer and contamination processes caused by microbes in natural environments. Fil: Creppy, Adama. Centre National de la Recherche Scientifique; Francia Fil: Clément, Eric. Université Paris Diderot - Paris 7; Francia Fil: Douarche, Carine. Centre National de la Recherche Scientifique; Francia Fil: D'angelo, María Verónica. Universidad de Buenos Aires. Facultad de Ingeniería; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Auradou, Harold. Centre National de la Recherche Scientifique; Francia |
description |
The role of activity on the hydrodynamic dispersion of bacteria in a model porous medium is studied by tracking thousands of bacteria in a microfluidic chip containing randomly placed pillars. We first evaluate the spreading dynamics of two populations of motile and nonmotile bacteria injected at different flow rates. In both cases, we observe that the mean and the variance of the distances covered by the bacteria vary linearly with time and flow velocity, a result qualitatively consistent with the standard geometric dispersion picture. However, quantitatively, the motile bacteria display a systematic retardation effect when compared to the nonmotile ones. Furthermore, the shape of the traveled distance distribution in the flow direction differs significantly for both the motile and the nonmotile strains, hence probing a markedly different exploration process. For the nonmotile bacteria, the distribution is Gaussian, whereas for the motile ones, the distribution displays a positive skewness and spreads exponentially downstream akin to a Γ distribution. The detailed microscopic study of the trajectories reveals two salient effects characterizing the exploration process of motile bacteria: (1) the emergence of an "active" retention effect due to an extended exploration of the pore surfaces and (2) an enhanced spreading at the forefront due to the transport of bacteria along "fast tracks" where they acquire a velocity larger than the local flow velocity. We finally discuss the practical applications of these effects on the large-scale macroscopic transfer and contamination processes caused by microbes in natural environments. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/117493 Creppy, Adama; Clément, Eric; Douarche, Carine; D'angelo, María Verónica; Auradou, Harold; Effect of motility on the transport of bacteria populations through a porous medium; American Physical Society; Physical Review Fluids; 4; 1; 1-2019; 1-16 2469-990X CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/117493 |
identifier_str_mv |
Creppy, Adama; Clément, Eric; Douarche, Carine; D'angelo, María Verónica; Auradou, Harold; Effect of motility on the transport of bacteria populations through a porous medium; American Physical Society; Physical Review Fluids; 4; 1; 1-2019; 1-16 2469-990X CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevFluids.4.013102 info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/prfluids/abstract/10.1103/PhysRevFluids.4.013102 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
American Physical Society |
publisher.none.fl_str_mv |
American Physical Society |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614325812068352 |
score |
13.070432 |