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Mechanical Coupling of Puller and Pusher Active Microswimmers Influences Motility

[Image: see text] Active self-propelled colloidal populations induce time-dependent three-dimensional fluid flows, which alter the rheological (viscoelastic) properties of their fluidic media. Researchers have also studied passive colloids mixed with bacterial suspensions to understand the hydrodyna...

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Autores principales: Singh, Ajay Vikram, Kishore, Vimal, Santomauro, Giulia, Yasa, Oncay, Bill, Joachim, Sitti, Metin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2020
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7304893/
https://www.ncbi.nlm.nih.gov/pubmed/32343587
http://dx.doi.org/10.1021/acs.langmuir.9b03665
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author Singh, Ajay Vikram
Kishore, Vimal
Santomauro, Giulia
Yasa, Oncay
Bill, Joachim
Sitti, Metin
author_facet Singh, Ajay Vikram
Kishore, Vimal
Santomauro, Giulia
Yasa, Oncay
Bill, Joachim
Sitti, Metin
author_sort Singh, Ajay Vikram
collection PubMed
description [Image: see text] Active self-propelled colloidal populations induce time-dependent three-dimensional fluid flows, which alter the rheological (viscoelastic) properties of their fluidic media. Researchers have also studied passive colloids mixed with bacterial suspensions to understand the hydrodynamic coupling between active and passive colloids. With recent developments in biological cell-driven biohybrid microswimmers, different type biological microswimmer (e.g., bacteria and algae) populations need to interact fluidically with each other in the same fluidic media, while such interactions have not been studied experimentally yet. Therefore, we report the swimming behavior of two opposite types of biological microswimmer (active colloid) populations: Chlamydomonas reinhardtii (C. reinhardtii) algae (puller-type microswimmers) population in coculture with Escherichia coli (E. coli) bacteria (pusher-type microswimmers) population. We observed noticeable fluidic coupling deviations from the existing understanding of passive colloids mixed with bacterial suspensions previously studied in the literature. The fluidic coupling among puller- and pusher-type microswimmers led to nonequilibrium fluctuations in the fluid flow due to their opposite swimming patterns. Such coupling could be the main reason behind the shift in motility behaviors of these two opposite-type swimmer populations suspended in the same fluidic media.
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spelling pubmed-73048932020-06-22 Mechanical Coupling of Puller and Pusher Active Microswimmers Influences Motility Singh, Ajay Vikram Kishore, Vimal Santomauro, Giulia Yasa, Oncay Bill, Joachim Sitti, Metin Langmuir [Image: see text] Active self-propelled colloidal populations induce time-dependent three-dimensional fluid flows, which alter the rheological (viscoelastic) properties of their fluidic media. Researchers have also studied passive colloids mixed with bacterial suspensions to understand the hydrodynamic coupling between active and passive colloids. With recent developments in biological cell-driven biohybrid microswimmers, different type biological microswimmer (e.g., bacteria and algae) populations need to interact fluidically with each other in the same fluidic media, while such interactions have not been studied experimentally yet. Therefore, we report the swimming behavior of two opposite types of biological microswimmer (active colloid) populations: Chlamydomonas reinhardtii (C. reinhardtii) algae (puller-type microswimmers) population in coculture with Escherichia coli (E. coli) bacteria (pusher-type microswimmers) population. We observed noticeable fluidic coupling deviations from the existing understanding of passive colloids mixed with bacterial suspensions previously studied in the literature. The fluidic coupling among puller- and pusher-type microswimmers led to nonequilibrium fluctuations in the fluid flow due to their opposite swimming patterns. Such coupling could be the main reason behind the shift in motility behaviors of these two opposite-type swimmer populations suspended in the same fluidic media. American Chemical Society 2020-04-28 2020-05-19 /pmc/articles/PMC7304893/ /pubmed/32343587 http://dx.doi.org/10.1021/acs.langmuir.9b03665 Text en Copyright © 2020 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Singh, Ajay Vikram
Kishore, Vimal
Santomauro, Giulia
Yasa, Oncay
Bill, Joachim
Sitti, Metin
Mechanical Coupling of Puller and Pusher Active Microswimmers Influences Motility
title Mechanical Coupling of Puller and Pusher Active Microswimmers Influences Motility
title_full Mechanical Coupling of Puller and Pusher Active Microswimmers Influences Motility
title_fullStr Mechanical Coupling of Puller and Pusher Active Microswimmers Influences Motility
title_full_unstemmed Mechanical Coupling of Puller and Pusher Active Microswimmers Influences Motility
title_short Mechanical Coupling of Puller and Pusher Active Microswimmers Influences Motility
title_sort mechanical coupling of puller and pusher active microswimmers influences motility
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7304893/
https://www.ncbi.nlm.nih.gov/pubmed/32343587
http://dx.doi.org/10.1021/acs.langmuir.9b03665
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