Wobbling and Migrating Ferrofluid Droplets
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866911421449633792 |
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| author | Aggarwal, Aaveg Chen, Shih-Yuan Kirkinis, Eleftherios Khan, Mohammed Imran Fan, Bei Driscoll, Michelle M de la Cruz, Monica Olvera |
| author_facet | Aggarwal, Aaveg Chen, Shih-Yuan Kirkinis, Eleftherios Khan, Mohammed Imran Fan, Bei Driscoll, Michelle M de la Cruz, Monica Olvera |
| contents | Active components incorporated in materials generate motion by inducing conformational changes in response to external fields. Magnetic fields are particularly interesting as they can actuate materials remotely. Millimeter-sized ferrofluid droplets placed on a solid surface, surrounded by an ambient gas phase, are shown here to migrate under a rotating magnetic field due to the periodic deformation of the liquid-gas interface. This interface wobbling leads to droplet migration with speeds that increase as the amplitude and frequency of the magnetic field increase. In addition to migrating in a controlled manner, we demonstrate the ability of magnetic droplets to clean surface impurities and transport cargo. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2406_08289 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Wobbling and Migrating Ferrofluid Droplets Aggarwal, Aaveg Chen, Shih-Yuan Kirkinis, Eleftherios Khan, Mohammed Imran Fan, Bei Driscoll, Michelle M de la Cruz, Monica Olvera Fluid Dynamics Soft Condensed Matter Active components incorporated in materials generate motion by inducing conformational changes in response to external fields. Magnetic fields are particularly interesting as they can actuate materials remotely. Millimeter-sized ferrofluid droplets placed on a solid surface, surrounded by an ambient gas phase, are shown here to migrate under a rotating magnetic field due to the periodic deformation of the liquid-gas interface. This interface wobbling leads to droplet migration with speeds that increase as the amplitude and frequency of the magnetic field increase. In addition to migrating in a controlled manner, we demonstrate the ability of magnetic droplets to clean surface impurities and transport cargo. |
| title | Wobbling and Migrating Ferrofluid Droplets |
| topic | Fluid Dynamics Soft Condensed Matter |
| url | https://arxiv.org/abs/2406.08289 |