3D trapping of microbubbles by the Marangoni force
[EN] In this Letter, we show 3D steady-state trapping and manipulation of vapor bubbles in liquids employing a lowpower continuous-wave laser using the Marangoni effect. Light absorption from photodeposited silver nanoparticles on the distal end of a multi-mode optical fiber is used to produce bubbl...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/232604 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/232604 |
| Access Level: | acceso abierto |
| Palabra clave: | Microbubbles Marangoni force 3D trapping |
| Sumario: | [EN] In this Letter, we show 3D steady-state trapping and manipulation of vapor bubbles in liquids employing a lowpower continuous-wave laser using the Marangoni effect. Light absorption from photodeposited silver nanoparticles on the distal end of a multi-mode optical fiber is used to produce bubbles of different diameters. The thermal effects produced by either the nanoparticles on the fiber tip or the light bulk absorption modulate the surface tension of the bubble wall and creates both longitudinal and transversal forces just like optical forces, effectively creating a 3D potential well. Using numerical simulations, we obtain expressions for the temperature profiles and present analytical expressions for the Marangoni force. In addition, using an array of three fibers with photodeposited nanoparticles is used to demonstrate the transfer of bubbles from one fiber to another by sequentially switching on and off the lasers. |
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