Pumping electrolyte fluid using focal light and electric field in rectangular microchannel
The absorption of the focused light inside aqueous electrolyte locally heats it; thus, it creates a temperature field and temperature gradient around the light-absorbing region. Due to a phenomenon known as Soret effect, positive and negative ions move in the presence of the temperature field toward...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2020-05-01
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| Series: | Iranian Journal of Physics Research |
| Subjects: | |
| Online Access: | http://ijpr.iut.ac.ir/article_1604_b06198969a1da3632fa50f5a5fa542e3.pdf |
| _version_ | 1819282477024280576 |
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| author | R Kiani-Iranpour S N Rasuli |
| author_facet | R Kiani-Iranpour S N Rasuli |
| author_sort | R Kiani-Iranpour |
| collection | DOAJ |
| description | The absorption of the focused light inside aqueous electrolyte locally heats it; thus, it creates a temperature field and temperature gradient around the light-absorbing region. Due to a phenomenon known as Soret effect, positive and negative ions move in the presence of the temperature field toward the warmer or cooler region. However, this tendency and its corresponding motion are not the same for two types of ions; therefore, it ends up with a locally charged region. This means creating a pure electric charge suspended in the light absorption area. Applying an external electric field to the fluid then exerts a force to the net charge and its surrounding fluid, resulting in the fluid’s motion. We investigate this problem for an electrolyte fluid enclosed between two parallel transparent dielectric blades closely located to each other. Based on analytic and finite element methods, we calculate the temperature field created by the Gaussian beam inside and outside the electrolyte. We then obtain its induced electric potential and charge density. Finally, we calculate the fluid velocity field and the total induced current. The analytical and numerical results well verify each other. |
| first_indexed | 2024-12-24T01:16:12Z |
| format | Article |
| id | doaj.art-8b46268e1f024cfcb2abd42bd6c46d60 |
| institution | Directory Open Access Journal |
| issn | 1682-6957 2345-3664 |
| language | English |
| last_indexed | 2024-12-24T01:16:12Z |
| publishDate | 2020-05-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Iranian Journal of Physics Research |
| spelling | doaj.art-8b46268e1f024cfcb2abd42bd6c46d602022-12-21T17:22:45ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572345-36642020-05-0120115717610.47176/ijpr.20.1.398211604Pumping electrolyte fluid using focal light and electric field in rectangular microchannelR Kiani-Iranpour0S N Rasuli1Department of Physics, University of Guilan, Guilan, Iran1. Department of Physics, University of Guilan, Guilan, Iran 2. School of Physics, Institute for Research in Fundamental Sciences (IPM), Tehran, IranThe absorption of the focused light inside aqueous electrolyte locally heats it; thus, it creates a temperature field and temperature gradient around the light-absorbing region. Due to a phenomenon known as Soret effect, positive and negative ions move in the presence of the temperature field toward the warmer or cooler region. However, this tendency and its corresponding motion are not the same for two types of ions; therefore, it ends up with a locally charged region. This means creating a pure electric charge suspended in the light absorption area. Applying an external electric field to the fluid then exerts a force to the net charge and its surrounding fluid, resulting in the fluid’s motion. We investigate this problem for an electrolyte fluid enclosed between two parallel transparent dielectric blades closely located to each other. Based on analytic and finite element methods, we calculate the temperature field created by the Gaussian beam inside and outside the electrolyte. We then obtain its induced electric potential and charge density. Finally, we calculate the fluid velocity field and the total induced current. The analytical and numerical results well verify each other.http://ijpr.iut.ac.ir/article_1604_b06198969a1da3632fa50f5a5fa542e3.pdfmicrofluidicsmicropumpsoret effect |
| spellingShingle | R Kiani-Iranpour S N Rasuli Pumping electrolyte fluid using focal light and electric field in rectangular microchannel Iranian Journal of Physics Research microfluidics micropump soret effect |
| title | Pumping electrolyte fluid using focal light and electric
field in rectangular microchannel |
| title_full | Pumping electrolyte fluid using focal light and electric
field in rectangular microchannel |
| title_fullStr | Pumping electrolyte fluid using focal light and electric
field in rectangular microchannel |
| title_full_unstemmed | Pumping electrolyte fluid using focal light and electric
field in rectangular microchannel |
| title_short | Pumping electrolyte fluid using focal light and electric
field in rectangular microchannel |
| title_sort | pumping electrolyte fluid using focal light and electric field in rectangular microchannel |
| topic | microfluidics micropump soret effect |
| url | http://ijpr.iut.ac.ir/article_1604_b06198969a1da3632fa50f5a5fa542e3.pdf |
| work_keys_str_mv | AT rkianiiranpour pumpingelectrolytefluidusingfocallightandelectricfieldinrectangularmicrochannel AT snrasuli pumpingelectrolytefluidusingfocallightandelectricfieldinrectangularmicrochannel |