Acoustophoresis of monodisperse oil droplets in water: Effect of symmetry breaking and non-resonance operation on oil trapping behavior.
| Autor: | Bazyar H; Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands., Kandemir MH; Department of Electrical Engineering and Automation, Aalto University, 02150 Espoo, Finland., Peper J; Soft Matter Fluidics and Interfaces, MESA+ Institute for Nanotechnology, University of Twente, P. O. Box 217, 7500 AE Enschede, The Netherlands., Andrade MAB; Institute of Physics, University of São Paulo, São Paulo 05508-090, Brazil., Bernassau AL; School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh, United Kingdom., Schroën K; Membrane Processes for Food, University of Twente, P. O. Box 217, 7500 AE Enschede, The Netherlands., Lammertink RGH; Soft Matter Fluidics and Interfaces, MESA+ Institute for Nanotechnology, University of Twente, P. O. Box 217, 7500 AE Enschede, The Netherlands. |
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| Jazyk: | angličtina |
| Zdroj: | Biomicrofluidics [Biomicrofluidics] 2023 Dec 27; Vol. 17 (6), pp. 064107. Date of Electronic Publication: 2023 Dec 27 (Print Publication: 2023). |
| DOI: | 10.1063/5.0175400 |
| Abstrakt: | Acoustic manipulation of particles in microchannels has recently gained much attention. Ultrasonic standing wave (USW) separation of oil droplets or particles is an established technology for microscale applications. Acoustofluidic devices are normally operated at optimized conditions, namely, resonant frequency, to minimize power consumption. It has been recently shown that symmetry breaking is needed to obtain efficient conditions for acoustic particle trapping. In this work, we study the acoustophoretic behavior of monodisperse oil droplets (silicone oil and hexadecane) in water in the microfluidic chip operating at a non-resonant frequency and an off-center placement of the transducer. Finite element-based computer simulations are further performed to investigate the influence of these conditions on the acoustic pressure distribution and oil trapping behavior. Via investigating the Gor'kov potential, we obtained an overlap between the trapping patterns obtained in experiments and simulations. We demonstrate that an off-center placement of the transducer and driving the transducer at a non-resonant frequency can still lead to predictable behavior of particles in acoustofluidics. This is relevant to applications in which the theoretical resonant frequency cannot be achieved, e.g., manipulation of biological matter within living tissues. Competing Interests: The authors have no conflicts to disclose. (© 2023 Author(s).) |
| Databáze: | MEDLINE |
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