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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2021-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-021-94398-9 |
| _version_ | 1818834694255411200 |
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| author | Shima Nezamipour Ali Najafi |
| author_facet | Shima Nezamipour Ali Najafi |
| author_sort | Shima Nezamipour |
| collection | DOAJ |
| 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 . |
| first_indexed | 2024-12-19T02:38:53Z |
| format | Article |
| id | doaj.art-908d45731df2451182fe96d97ff181aa |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T02:38:53Z |
| publishDate | 2021-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-908d45731df2451182fe96d97ff181aa2022-12-21T20:39:15ZengNature PortfolioScientific Reports2045-23222021-07-0111111110.1038/s41598-021-94398-9Flow pumping by external periodic shear applied to a soft interfaceShima Nezamipour0Ali Najafi1Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS)Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS)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 .https://doi.org/10.1038/s41598-021-94398-9 |
| spellingShingle | Shima Nezamipour Ali Najafi Flow pumping by external periodic shear applied to a soft interface Scientific Reports |
| title | 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_short | Flow pumping by external periodic shear applied to a soft interface |
| title_sort | flow pumping by external periodic shear applied to a soft interface |
| url | https://doi.org/10.1038/s41598-021-94398-9 |
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