Uniform growth of clusters of magnetic nanoparticles in a rotating magnetic field
It was recently shown that the exposure of magnetic microbeads to a homogeneous magnetic field, which rotates around the axis perpendicular to the field direction, generates highly ordered two-dimensional particle arrays. In this work, the impact of downscaling such systems is analyzed. Dilutions of...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Springer Netherlands
2016
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| Online Access: | http://hdl.handle.net/1721.1/104470 |
| _version_ | 1826206822871072768 |
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| author | Regtmeier, Anna Wittbracht, Frank Rempel, Thomas Mill, Nadine Peter, Michael Weddemann, Alexander Mattay, Jochen Hütten, Andreas |
| author2 | Massachusetts Institute of Technology. Laboratory for Electromagnetic and Electronic Systems |
| author_facet | Massachusetts Institute of Technology. Laboratory for Electromagnetic and Electronic Systems Regtmeier, Anna Wittbracht, Frank Rempel, Thomas Mill, Nadine Peter, Michael Weddemann, Alexander Mattay, Jochen Hütten, Andreas |
| author_sort | Regtmeier, Anna |
| collection | MIT |
| description | It was recently shown that the exposure of magnetic microbeads to a homogeneous magnetic field, which rotates around the axis perpendicular to the field direction, generates highly ordered two-dimensional particle arrays. In this work, the impact of downscaling such systems is analyzed. Dilutions of cobalt nanoparticles with an average diameter of 6 nm were brought into a rotating homogeneous magnetic field. A strong localization of the number of particles within a certain cluster size can be observed if the rotation frequency is adjusted to a specific particle concentration. In particular, we obtain an increase of 85 % of the maximum of the cluster size distribution, when changing the rotation frequency of the magnetic field from 300 to 750 rpm for a cobalt concentration of 35.95 mmol/l. We propose a heuristic model to explain the observed frequency dependence. |
| first_indexed | 2024-09-23T13:39:07Z |
| format | Article |
| id | mit-1721.1/104470 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T13:39:07Z |
| publishDate | 2016 |
| publisher | Springer Netherlands |
| record_format | dspace |
| spelling | mit-1721.1/1044702022-10-01T16:18:18Z Uniform growth of clusters of magnetic nanoparticles in a rotating magnetic field Regtmeier, Anna Wittbracht, Frank Rempel, Thomas Mill, Nadine Peter, Michael Weddemann, Alexander Mattay, Jochen Hütten, Andreas Massachusetts Institute of Technology. Laboratory for Electromagnetic and Electronic Systems Weddemann, Alexander It was recently shown that the exposure of magnetic microbeads to a homogeneous magnetic field, which rotates around the axis perpendicular to the field direction, generates highly ordered two-dimensional particle arrays. In this work, the impact of downscaling such systems is analyzed. Dilutions of cobalt nanoparticles with an average diameter of 6 nm were brought into a rotating homogeneous magnetic field. A strong localization of the number of particles within a certain cluster size can be observed if the rotation frequency is adjusted to a specific particle concentration. In particular, we obtain an increase of 85 % of the maximum of the cluster size distribution, when changing the rotation frequency of the magnetic field from 300 to 750 rpm for a cobalt concentration of 35.95 mmol/l. We propose a heuristic model to explain the observed frequency dependence. Alexander von Humboldt-Stiftung Bielefeld University (SFB 613 and FOR 945) 2016-09-30T19:05:46Z 2016-09-30T19:05:46Z 2012-07 2012-02 2016-08-18T15:20:27Z Article http://purl.org/eprint/type/JournalArticle 1388-0764 1572-896X http://hdl.handle.net/1721.1/104470 Regtmeier, Anna et al. “Uniform Growth of Clusters of Magnetic Nanoparticles in a Rotating Magnetic Field.” Journal of Nanoparticle Research 14.8 (2012): n. pag. en http://dx.doi.org/10.1007/s11051-012-1061-8 Journal of Nanoparticle Research 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. Springer Science+Business Media B.V. application/pdf Springer Netherlands Springer Netherlands |
| spellingShingle | Regtmeier, Anna Wittbracht, Frank Rempel, Thomas Mill, Nadine Peter, Michael Weddemann, Alexander Mattay, Jochen Hütten, Andreas Uniform growth of clusters of magnetic nanoparticles in a rotating magnetic field |
| title | Uniform growth of clusters of magnetic nanoparticles in a rotating magnetic field |
| title_full | Uniform growth of clusters of magnetic nanoparticles in a rotating magnetic field |
| title_fullStr | Uniform growth of clusters of magnetic nanoparticles in a rotating magnetic field |
| title_full_unstemmed | Uniform growth of clusters of magnetic nanoparticles in a rotating magnetic field |
| title_short | Uniform growth of clusters of magnetic nanoparticles in a rotating magnetic field |
| title_sort | uniform growth of clusters of magnetic nanoparticles in a rotating magnetic field |
| url | http://hdl.handle.net/1721.1/104470 |
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