Magnetophoresis of Nonmagnetic, Submicrometer Particles in Magnetic Fluids
We studied the migration of nonmagnetic, submicrometer polystyrene beads submerged in a magnetic fluid in the presence of nonuniform magnetic fields as a potential method for size-based separation of submicrometer, nonmagnetic species. Since the polystyrene beads are much larger than the magnetic fl...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | en_US |
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2003
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| Online Access: | http://hdl.handle.net/1721.1/3931 |
| _version_ | 1826204881217650688 |
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| author | Gonzalez, Lino Fateen, Seif Smith, Kenneth A. Hatton, T. Alan |
| author_facet | Gonzalez, Lino Fateen, Seif Smith, Kenneth A. Hatton, T. Alan |
| author_sort | Gonzalez, Lino |
| collection | MIT |
| description | We studied the migration of nonmagnetic, submicrometer polystyrene beads submerged in a magnetic fluid in the presence of nonuniform magnetic fields as a potential method for size-based separation of submicrometer, nonmagnetic species. Since the polystyrene beads are much larger than the magnetic fluid nanoparticles, the magnetic fluid was treated as a one-component continuum with respect to the beads. We found that the polystyrene beads will migrate in the direction of decreasing magnetic fields and will focus over a region where the magnetic field or its gradient vanishes, as predicted by our model. The concentration profiles predicted by our model, which has no adjustable or fitted parameters, agree reasonably well with the experimental data both qualitatively and quantitatively. |
| first_indexed | 2024-09-23T13:02:32Z |
| format | Article |
| id | mit-1721.1/3931 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:02:32Z |
| publishDate | 2003 |
| record_format | dspace |
| spelling | mit-1721.1/39312019-04-11T08:18:40Z Magnetophoresis of Nonmagnetic, Submicrometer Particles in Magnetic Fluids Gonzalez, Lino Fateen, Seif Smith, Kenneth A. Hatton, T. Alan nonmagnetic, submicrometer particles magnetophoresis size-based separation We studied the migration of nonmagnetic, submicrometer polystyrene beads submerged in a magnetic fluid in the presence of nonuniform magnetic fields as a potential method for size-based separation of submicrometer, nonmagnetic species. Since the polystyrene beads are much larger than the magnetic fluid nanoparticles, the magnetic fluid was treated as a one-component continuum with respect to the beads. We found that the polystyrene beads will migrate in the direction of decreasing magnetic fields and will focus over a region where the magnetic field or its gradient vanishes, as predicted by our model. The concentration profiles predicted by our model, which has no adjustable or fitted parameters, agree reasonably well with the experimental data both qualitatively and quantitatively. Singapore-MIT Alliance (SMA) 2003-12-16T02:47:41Z 2003-12-16T02:47:41Z 2004-01 Article http://hdl.handle.net/1721.1/3931 en_US Molecular Engineering of Biological and Chemical Systems (MEBCS); 373849 bytes application/pdf application/pdf |
| spellingShingle | nonmagnetic, submicrometer particles magnetophoresis size-based separation Gonzalez, Lino Fateen, Seif Smith, Kenneth A. Hatton, T. Alan Magnetophoresis of Nonmagnetic, Submicrometer Particles in Magnetic Fluids |
| title | Magnetophoresis of Nonmagnetic, Submicrometer Particles in Magnetic Fluids |
| title_full | Magnetophoresis of Nonmagnetic, Submicrometer Particles in Magnetic Fluids |
| title_fullStr | Magnetophoresis of Nonmagnetic, Submicrometer Particles in Magnetic Fluids |
| title_full_unstemmed | Magnetophoresis of Nonmagnetic, Submicrometer Particles in Magnetic Fluids |
| title_short | Magnetophoresis of Nonmagnetic, Submicrometer Particles in Magnetic Fluids |
| title_sort | magnetophoresis of nonmagnetic submicrometer particles in magnetic fluids |
| topic | nonmagnetic, submicrometer particles magnetophoresis size-based separation |
| url | http://hdl.handle.net/1721.1/3931 |
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