Magneto-mechanical resonance of a single superparamagnetic microbead trapped by a magnetic domain wall
Magnetic domain walls in ferromagnetic tracks can be used to trap and transport superparamagnetic beads for lab-on-a-chip applications. Here it is shown that the magnetostatic binding between a domain wall and a superparamagnetic bead suspended in a host fluid leads to a distinct magneto-mechanical...
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| Format: | Article |
| Language: | en_US |
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American Institute of Physics
2013
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| Online Access: | http://hdl.handle.net/1721.1/81314 |
| _version_ | 1826213936203038720 |
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| author | Rapoport, Elizabeth Ashera Beach, Geoffrey Stephen |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Rapoport, Elizabeth Ashera Beach, Geoffrey Stephen |
| author_sort | Rapoport, Elizabeth Ashera |
| collection | MIT |
| description | Magnetic domain walls in ferromagnetic tracks can be used to trap and transport superparamagnetic beads for lab-on-a-chip applications. Here it is shown that the magnetostatic binding between a domain wall and a superparamagnetic bead suspended in a host fluid leads to a distinct magneto-mechanical resonance under application of a sinusoidal driving field. The characteristic resonant frequency depends on the ratio of the magnetostatic binding force to the viscous drag on the bead. This resonance has been experimentally detected for a single trapped superparamagnetic bead using an optical detection technique. |
| first_indexed | 2024-09-23T15:57:11Z |
| format | Article |
| id | mit-1721.1/81314 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:57:11Z |
| publishDate | 2013 |
| publisher | American Institute of Physics |
| record_format | dspace |
| spelling | mit-1721.1/813142022-09-29T17:15:17Z Magneto-mechanical resonance of a single superparamagnetic microbead trapped by a magnetic domain wall Rapoport, Elizabeth Ashera Beach, Geoffrey Stephen Massachusetts Institute of Technology. Department of Materials Science and Engineering Rapoport, Elizabeth Ashera Beach, Geoffrey Stephen Magnetic domain walls in ferromagnetic tracks can be used to trap and transport superparamagnetic beads for lab-on-a-chip applications. Here it is shown that the magnetostatic binding between a domain wall and a superparamagnetic bead suspended in a host fluid leads to a distinct magneto-mechanical resonance under application of a sinusoidal driving field. The characteristic resonant frequency depends on the ratio of the magnetostatic binding force to the viscous drag on the bead. This resonance has been experimentally detected for a single trapped superparamagnetic bead using an optical detection technique. National Science Foundation (U.S.). Materials Research Science and Engineering Centers (Program) (award number DMR 0819762) Deshpande Center for Technological Innovation 2013-10-04T15:33:57Z 2013-10-04T15:33:57Z 2012-02 2011-09 Article http://purl.org/eprint/type/JournalArticle 00218979 http://hdl.handle.net/1721.1/81314 Rapoport, Elizabeth, and Geoffrey S. D. Beach. Magneto-mechanical Resonance of a Single Superparamagnetic Microbead Trapped by a Magnetic Domain Wall. Journal of Applied Physics 111, no. 7 (2012): 07B310.© 2012 American Institute of Physics. en_US http://dx.doi.org/10.1063/1.3672406 Journal of Applied Physics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Institute of Physics MIT web domain |
| spellingShingle | Rapoport, Elizabeth Ashera Beach, Geoffrey Stephen Magneto-mechanical resonance of a single superparamagnetic microbead trapped by a magnetic domain wall |
| title | Magneto-mechanical resonance of a single superparamagnetic microbead trapped by a magnetic domain wall |
| title_full | Magneto-mechanical resonance of a single superparamagnetic microbead trapped by a magnetic domain wall |
| title_fullStr | Magneto-mechanical resonance of a single superparamagnetic microbead trapped by a magnetic domain wall |
| title_full_unstemmed | Magneto-mechanical resonance of a single superparamagnetic microbead trapped by a magnetic domain wall |
| title_short | Magneto-mechanical resonance of a single superparamagnetic microbead trapped by a magnetic domain wall |
| title_sort | magneto mechanical resonance of a single superparamagnetic microbead trapped by a magnetic domain wall |
| url | http://hdl.handle.net/1721.1/81314 |
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