Label-free alignment of nonmagnetic particles in a small uniform magnetic field
Label-free manipulation of biological entities can minimize damage, increase viability and improve efficiency of subsequent analysis. Understanding the mechanism of interaction between magnetic and nonmagnetic particles in an inverse ferrofluid can provide a mechanism of label-free manipulation of s...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2019
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/89849 http://hdl.handle.net/10220/48255 |
| _version_ | 1811684179263356928 |
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| author | Wang, Zhaomeng Wang, Ying Wu, Rui Ge Wang, Z. P Ramanujan, Raju V |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Wang, Zhaomeng Wang, Ying Wu, Rui Ge Wang, Z. P Ramanujan, Raju V |
| author_sort | Wang, Zhaomeng |
| collection | NTU |
| description | Label-free manipulation of biological entities can minimize damage, increase viability and improve efficiency of subsequent analysis. Understanding the mechanism of interaction between magnetic and nonmagnetic particles in an inverse ferrofluid can provide a mechanism of label-free manipulation of such entities in a uniform magnetic field. The magnetic force, induced by relative magnetic susceptibility difference between nonmagnetic particles and surrounding magnetic particles as well as particle–particle interaction were studied. Label-free alignment of nonmagnetic particles can be achieved by higher magnetic field strength (Ba ), smaller particle spacing (R), larger particle size (rp1 ), and higher relative magnetic permeability difference between particle and the surrounding fluid (Rμr ). Rμr can be used to predict the direction of the magnetic force between both magnetic and nonmagnetic particles. A sandwich structure, containing alternate layers of magnetic and nonmagnetic particle chains, was studied. This work can be used for manipulation of nonmagnetic particles in lab-on-a-chip applications. |
| first_indexed | 2024-10-01T04:24:31Z |
| format | Journal Article |
| id | ntu-10356/89849 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:24:31Z |
| publishDate | 2019 |
| record_format | dspace |
| spelling | ntu-10356/898492020-06-01T10:13:50Z Label-free alignment of nonmagnetic particles in a small uniform magnetic field Wang, Zhaomeng Wang, Ying Wu, Rui Ge Wang, Z. P Ramanujan, Raju V School of Materials Science & Engineering DRNTU::Engineering::Materials Magnetic Forces Magnetic Particles Label-free manipulation of biological entities can minimize damage, increase viability and improve efficiency of subsequent analysis. Understanding the mechanism of interaction between magnetic and nonmagnetic particles in an inverse ferrofluid can provide a mechanism of label-free manipulation of such entities in a uniform magnetic field. The magnetic force, induced by relative magnetic susceptibility difference between nonmagnetic particles and surrounding magnetic particles as well as particle–particle interaction were studied. Label-free alignment of nonmagnetic particles can be achieved by higher magnetic field strength (Ba ), smaller particle spacing (R), larger particle size (rp1 ), and higher relative magnetic permeability difference between particle and the surrounding fluid (Rμr ). Rμr can be used to predict the direction of the magnetic force between both magnetic and nonmagnetic particles. A sandwich structure, containing alternate layers of magnetic and nonmagnetic particle chains, was studied. This work can be used for manipulation of nonmagnetic particles in lab-on-a-chip applications. 2019-05-17T05:19:54Z 2019-12-06T17:34:59Z 2019-05-17T05:19:54Z 2019-12-06T17:34:59Z 2018 Journal Article Wang, Z., Wang, Y., Wu, R. G., Wang, Z. P., & Ramanujan, R. V. (2018). Label-free alignment of nonmagnetic particles in a small uniform magnetic field. Journal of Nanoscience and Nanotechnology, 18(1), 634-644. doi:10.1166/jnn.2018.14704 1533-4880 https://hdl.handle.net/10356/89849 http://hdl.handle.net/10220/48255 10.1166/jnn.2018.14704 en Journal of Nanoscience and Nanotechnology © 2018 American Scientific Publishers. All rights reserved. |
| spellingShingle | DRNTU::Engineering::Materials Magnetic Forces Magnetic Particles Wang, Zhaomeng Wang, Ying Wu, Rui Ge Wang, Z. P Ramanujan, Raju V Label-free alignment of nonmagnetic particles in a small uniform magnetic field |
| title | Label-free alignment of nonmagnetic particles in a small uniform magnetic field |
| title_full | Label-free alignment of nonmagnetic particles in a small uniform magnetic field |
| title_fullStr | Label-free alignment of nonmagnetic particles in a small uniform magnetic field |
| title_full_unstemmed | Label-free alignment of nonmagnetic particles in a small uniform magnetic field |
| title_short | Label-free alignment of nonmagnetic particles in a small uniform magnetic field |
| title_sort | label free alignment of nonmagnetic particles in a small uniform magnetic field |
| topic | DRNTU::Engineering::Materials Magnetic Forces Magnetic Particles |
| url | https://hdl.handle.net/10356/89849 http://hdl.handle.net/10220/48255 |
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