Propulsion of Bubble-Based Acoustic Microswimmers
| Autor: | M. Bouriau, Philippe Marmottant, Olivier Stephan, Nicolas Bertin, Laetitia Gredy, Eric Lauga, Tamsin A. Spelman |
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| Přispěvatelé: | Laboratoire Interdisciplinaire de Physique [Saint Martin d’Hères] (LIPhy), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), Department of Applied Mathematics and Theoretical Physics (DAMTP), University of Cambridge [UK] (CAM), P. M. acknowledges financial support from the European Community’s Seventh Framework Programme (FP7/2007- 2013) ERC Grant Agreement Bubbleboost No. 614655. This work has been performed with the help of the 'Plateforme Technologique Amont' de Grenoble, with the financial support of the 'Nanosciences aux limites de la Nanoélectronique' Foundation. Support from the EPSRC (T. A. S.) and from a Marie Curie Grant (E. L.) is also gratefully acknowledged., European Project: 614655,EC:FP7:ERC,ERC-2013-CoG,BUBBLEBOOST(2014), Lauga, Eric Lauga [0000-0002-8916-2545], Apollo - University of Cambridge Repository, Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Payload business.industry Bubble General Physics and Astronomy 02 engineering and technology Propulsion 010402 general chemistry 021001 nanoscience & nanotechnology 5103 Classical Physics 01 natural sciences [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] 0104 chemical sciences Active matter Mechanism (engineering) 4012 Fluid Mechanics and Thermal Engineering [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] Aerospace engineering 0210 nano-technology business 51 Physical Sciences 40 Engineering Microfabrication |
| Zdroj: | Physical Review Applied Physical Review Applied, American Physical Society, 2015, 4 (6), pp.064012. ⟨10.1103/PhysRevApplied.4.064012⟩ Physical Review Applied, 2015, 4 (6), pp.064012. ⟨10.1103/PhysRevApplied.4.064012⟩ |
| ISSN: | 2331-7019 |
| DOI: | 10.1103/physrevapplied.4.064012 |
| Popis: | International audience; Acoustic microswimmers present a great potential for microfluidic applications and targeted drug delivery. Here, we introduce armored microbubbles (size range, 10–20 μm) made by three-dimensional microfabrication, which allows the bubbles to last for hours even under forced oscillations. The acoustic resonance of the armored microbubbles is found to be dictated by capillary forces and not by gas volume, and its measurements agree with a theoretical calculation. We further measure experimentally and predict theoretically the net propulsive flow generated by the bubble vibration. This flow, due to steady streaming in the fluid, can reach 100 mm=s, and is affected by the presence of nearby walls. Finally, microswimmers in motion are shown, either as spinning devices or free swimmers. |
| Databáze: | OpenAIRE |
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