Dynamics of droplets and bubbles coated with magnetic particles
Based on the interfacial self-assembly of magnetic nanometer and micrometer sized particles, we demonstrate the formation of microspheres covered by magnetic nanoparticles, millimeter-sized oil droplets stabilized by a layer of closely-packed microparticles, and a new type of bubble with a permanent...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
2009
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/19013 |
| _version_ | 1826121271555915776 |
|---|---|
| author | Zhao, Xue |
| author2 | Lars Egil Helseth |
| author_facet | Lars Egil Helseth Zhao, Xue |
| author_sort | Zhao, Xue |
| collection | NTU |
| description | Based on the interfacial self-assembly of magnetic nanometer and micrometer sized particles, we demonstrate the formation of microspheres covered by magnetic nanoparticles, millimeter-sized oil droplets stabilized by a layer of closely-packed microparticles, and a new type of bubble with a permanent magnetization. The motion of individual magnetic microspheres in a defined magnetic field gradient is investigated and the susceptibilities of individual magnetic microspheres are estimated. Our measurement shows that the magnetic moment of the microspheres scales with their diameters. This is reasonable since the magnetic nanoparticles are attached to the surface of these microspheres, which means the larger the surface area, the more possibilities for these magnetic nanoparticles to attach to the surface. |
| first_indexed | 2024-10-01T05:29:57Z |
| format | Thesis |
| id | ntu-10356/19013 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:29:57Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-10356/190132023-02-28T23:46:13Z Dynamics of droplets and bubbles coated with magnetic particles Zhao, Xue Lars Egil Helseth Ohl Claus-Dieter School of Physical and Mathematical Sciences DRNTU::Science::Physics::Electricity and magnetism Based on the interfacial self-assembly of magnetic nanometer and micrometer sized particles, we demonstrate the formation of microspheres covered by magnetic nanoparticles, millimeter-sized oil droplets stabilized by a layer of closely-packed microparticles, and a new type of bubble with a permanent magnetization. The motion of individual magnetic microspheres in a defined magnetic field gradient is investigated and the susceptibilities of individual magnetic microspheres are estimated. Our measurement shows that the magnetic moment of the microspheres scales with their diameters. This is reasonable since the magnetic nanoparticles are attached to the surface of these microspheres, which means the larger the surface area, the more possibilities for these magnetic nanoparticles to attach to the surface. DOCTOR OF PHILOSOPHY (SPMS) 2009-09-09T07:32:27Z 2009-09-09T07:32:27Z 2009 2009 Thesis Zhao, X. (2009). Dynamics of droplets and bubbles coated with magnetic particles. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/19013 10.32657/10356/19013 en 91 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics::Electricity and magnetism Zhao, Xue Dynamics of droplets and bubbles coated with magnetic particles |
| title | Dynamics of droplets and bubbles coated with magnetic particles |
| title_full | Dynamics of droplets and bubbles coated with magnetic particles |
| title_fullStr | Dynamics of droplets and bubbles coated with magnetic particles |
| title_full_unstemmed | Dynamics of droplets and bubbles coated with magnetic particles |
| title_short | Dynamics of droplets and bubbles coated with magnetic particles |
| title_sort | dynamics of droplets and bubbles coated with magnetic particles |
| topic | DRNTU::Science::Physics::Electricity and magnetism |
| url | https://hdl.handle.net/10356/19013 |
| work_keys_str_mv | AT zhaoxue dynamicsofdropletsandbubblescoatedwithmagneticparticles |