Formation and manipulation of ferrofluid droplets at a microfluidic T-junction
This paper reports the formation and manipulation of ferrofluid droplets at a microfluidic T-junction in the presence of a permanent magnetic field. A small circular permanent magnet with a diameter of 3 mm is used to control the size of the ferrofluid droplets within a microfluidic device. In the a...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2012
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/94858 http://hdl.handle.net/10220/7738 |
| _version_ | 1826109904771874816 |
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| author | Tan, Say-Hwa Nguyen, Nam-Trung Yobas, Levent Kang, Tae Goo |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Tan, Say-Hwa Nguyen, Nam-Trung Yobas, Levent Kang, Tae Goo |
| author_sort | Tan, Say-Hwa |
| collection | NTU |
| description | This paper reports the formation and manipulation of ferrofluid droplets at a microfluidic T-junction in the presence of a permanent magnetic field. A small circular permanent magnet with a diameter of 3 mm is used to control the size of the ferrofluid droplets within a microfluidic device. In the absence of a magnetic field, the size of the ferrofluid droplets decreases linearly with the increase of the flow rate of the continuous phase. In the presence of a magnetic field, the size of the droplets depends on the magnetic field strength, magnetic field gradient and the magnetization of the ferrofluid. The magnetic field strength is adjusted in our experiment by the location of the magnet. The induced attractive magnetic force affects the droplet formation process leading to the change in the size of the formed droplets. Experimental observation also shows that the relative change in the size of the droplet depends on the flow rate of the continuous phase. Furthermore, the paper compares the evolving shape of the ferrofluid droplet during the formation process with and without the magnetic field. |
| first_indexed | 2024-10-01T02:26:03Z |
| format | Journal Article |
| id | ntu-10356/94858 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T02:26:03Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | ntu-10356/948582023-03-04T17:18:03Z Formation and manipulation of ferrofluid droplets at a microfluidic T-junction Tan, Say-Hwa Nguyen, Nam-Trung Yobas, Levent Kang, Tae Goo School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering This paper reports the formation and manipulation of ferrofluid droplets at a microfluidic T-junction in the presence of a permanent magnetic field. A small circular permanent magnet with a diameter of 3 mm is used to control the size of the ferrofluid droplets within a microfluidic device. In the absence of a magnetic field, the size of the ferrofluid droplets decreases linearly with the increase of the flow rate of the continuous phase. In the presence of a magnetic field, the size of the droplets depends on the magnetic field strength, magnetic field gradient and the magnetization of the ferrofluid. The magnetic field strength is adjusted in our experiment by the location of the magnet. The induced attractive magnetic force affects the droplet formation process leading to the change in the size of the formed droplets. Experimental observation also shows that the relative change in the size of the droplet depends on the flow rate of the continuous phase. Furthermore, the paper compares the evolving shape of the ferrofluid droplet during the formation process with and without the magnetic field. 2012-04-12T02:45:59Z 2019-12-06T19:03:29Z 2012-04-12T02:45:59Z 2019-12-06T19:03:29Z 2010 2010 Journal Article Tan, S. H., Nguyen, N. T., Yobas, L. & Kang, T. G. (2010). Formation and manipulation of ferrofluid droplets at a microfluidic T-junction. Journal of micromechanics and microengineering, 20(4). https://hdl.handle.net/10356/94858 http://hdl.handle.net/10220/7738 10.1088/0960-1317/20/4/045004 152455 en Journal of micromechanics and microengineering © 2010 IOP Publishing Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Micromechanics and Microengineering, IOP Publishing Ltd.. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1088/0960-1317/20/4/045004]. 17 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering Tan, Say-Hwa Nguyen, Nam-Trung Yobas, Levent Kang, Tae Goo Formation and manipulation of ferrofluid droplets at a microfluidic T-junction |
| title | Formation and manipulation of ferrofluid droplets at a microfluidic T-junction |
| title_full | Formation and manipulation of ferrofluid droplets at a microfluidic T-junction |
| title_fullStr | Formation and manipulation of ferrofluid droplets at a microfluidic T-junction |
| title_full_unstemmed | Formation and manipulation of ferrofluid droplets at a microfluidic T-junction |
| title_short | Formation and manipulation of ferrofluid droplets at a microfluidic T-junction |
| title_sort | formation and manipulation of ferrofluid droplets at a microfluidic t junction |
| topic | DRNTU::Engineering::Mechanical engineering |
| url | https://hdl.handle.net/10356/94858 http://hdl.handle.net/10220/7738 |
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