Flow pumping by external periodic shear applied to a soft interface

Abstract Flow pumping in viscous fluids is of prime importance in micro-fluidic applications. Here we show that a single colloidal particle in front of a soft wall, manipulated by external means like an optical tweezer, can pump the ambient viscous fluid. The particle, moving back and forth parallel...

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Autores principales:	Shima Nezamipour, Ali Najafi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/908d45731df2451182fe96d97ff181aa
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spelling	oai:doaj.org-article:908d45731df2451182fe96d97ff181aa2021-12-02T17:55:04ZFlow pumping by external periodic shear applied to a soft interface10.1038/s41598-021-94398-92045-2322https://doaj.org/article/908d45731df2451182fe96d97ff181aa2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-94398-9https://doaj.org/toc/2045-2322Abstract Flow pumping in viscous fluids is of prime importance in micro-fluidic applications. Here we show that a single colloidal particle in front of a soft wall, manipulated by external means like an optical tweezer, can pump the ambient viscous fluid. The particle, moving back and forth parallel to the soft wall, can produce an averaged net flow in a direction perpendicular to the wall. Using a perturbative scheme, we present the results. Analysis show that this flow in terms of capillary number, scales as $${\text {Ca}}^2$$ Ca 2 .Shima NezamipourAli NajafiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shima Nezamipour Ali Najafi Flow pumping by external periodic shear applied to a soft interface
description	Abstract Flow pumping in viscous fluids is of prime importance in micro-fluidic applications. Here we show that a single colloidal particle in front of a soft wall, manipulated by external means like an optical tweezer, can pump the ambient viscous fluid. The particle, moving back and forth parallel to the soft wall, can produce an averaged net flow in a direction perpendicular to the wall. Using a perturbative scheme, we present the results. Analysis show that this flow in terms of capillary number, scales as $${\text {Ca}}^2$$ Ca 2 .
format	article
author	Shima Nezamipour Ali Najafi
author_facet	Shima Nezamipour Ali Najafi
author_sort	Shima Nezamipour
title	Flow pumping by external periodic shear applied to a soft interface
title_short	Flow pumping by external periodic shear applied to a soft interface
title_full	Flow pumping by external periodic shear applied to a soft interface
title_fullStr	Flow pumping by external periodic shear applied to a soft interface
title_full_unstemmed	Flow pumping by external periodic shear applied to a soft interface
title_sort	flow pumping by external periodic shear applied to a soft interface
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/908d45731df2451182fe96d97ff181aa
work_keys_str_mv	AT shimanezamipour flowpumpingbyexternalperiodicshearappliedtoasoftinterface AT alinajafi flowpumpingbyexternalperiodicshearappliedtoasoftinterface
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Flow pumping by external periodic shear applied to a soft interface

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