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13 March 2024 Analogies in optical and acoustic trapping: the particle size effect
Karen P. Volke-Sepúlveda, Victor U. Contreras, Jhon F. Pazos-Ospina, Jordan Estrada-Morales, Joao L. Ealo, Diego Baresch
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Proceedings Volume PC12901, Complex Light and Optical Forces XVIII; PC1290101 (2024) https://doi.org/10.1117/12.3005192
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
By using the Generalized Lorentz-Mie Theory (GLMT), which was successfully adapted from optics to acoustics, we present a thorough parametric study of acoustic forces in a standing-wave levitation trap, which allows us to identify the most relevant parameters of the levitation devices, while exploring the size ranges of the objects that can be acoustically levitated in these kinds of traps. We show that particles can be trapped either in pressure nodes or antinodes, depending solely on their size. This is analogous to the particle size-effect found in optical traps with complex light potentials. We present theoretical and experimental results for airborne levitation that are in excellent agreement.
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Karen P. Volke-Sepúlveda, Victor U. Contreras, Jhon F. Pazos-Ospina, Jordan Estrada-Morales, Joao L. Ealo, and Diego Baresch "Analogies in optical and acoustic trapping: the particle size effect", Proc. SPIE PC12901, Complex Light and Optical Forces XVIII, PC1290101 (13 March 2024); https://doi.org/10.1117/12.3005192
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KEYWORDS
Particles
Acoustics
Optical tweezers
Acoustic waves
Optical properties
Spherical lenses
Ultrasonics
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