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arXiv · 2409.18966

Miscible fluids patterning and micro-manipulation using vortex-based single-beam acoustic tweezers

Samir Almohamad·Gustav Modler·Ravinder Chutani·Udita Ghosh·Henrik Bruus·Sarah Cleve·Michael Baudoin
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Abstract

Vortex-based single-beam tweezers have the ability to precisely and selectively move a wide range of objects, including particles, bubbles, droplets, and cells with sizes ranging from the millimeter to micrometer scale. In 2017, Karlsen and Bruus [Phys. Rev. Appl. 7, 034017 (2017)] theoretically suggested that these tweezers could also address one of the most challenging issues: the patterning and manipulation of miscible fluids. In this paper, we experimentally demonstrate this ability using acoustic vortex beams generated by interdigital transducer-based active holograms. The experimental results are supported by a numerical model based on acoustic body force simulations. This work paves the way for the precise shaping of chemical concentration fields, a crucial factor in numerous chemical and biological processes.

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Samir Almohamad, Gustav Modler, Ravinder Chutani, Udita Ghosh, Henrik Bruus, Sarah Cleve, Michael Baudoin. 2024-09-11. Miscible fluids patterning and micro-manipulation using vortex-based single-beam acoustic tweezers. https://arxiv.org/abs/2409.18966

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