Particle manipulation using macroscale angled ultrasonic standing waves

Chitale, Kedar C.; PreszJr., Walter; Ross-Johnsrud, Benjamin P.; Hyman, Miles; Lamontagne, Marc; Lipkens, Bart

doi:10.1121/2.0000652

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…It is noteworthy that the acoustic radiation force (ARF) is induced by the transfer of linear momentum, while the acoustic radiation torque (ART) comes from the exchange of angular momentum from the acoustic field to immersed particles. In general, acoustic scattering [3][4][5][6][7][8][9][10][11] and streaming [12][13][14][15][16] are the two typical kinds of physical mechanisms to move or rotate particles in the fluids illuminated by vortex beams [17][18][19][20][21][22] or standing waves [23][24][25][26][27]. For the ARFs in a viscous fluid, the acoustic streaming will dominate for small-sized particles, whereas the acoustic scattering plays a dominant role for particles with sizes larger than the critical value [28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Reversals of Acoustic Radiation Torque in Bessel Beams Using Theoretical and Numerical Implementations in Three Dimensions

Gong

Marston

2019

Phys. Rev. Applied

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Acoustic radiation torque (ART) plays an important role in the subject of acoustophoresis, which could induce the spinning rotation of particles on their own axes. The partial wave series method (PWSM) and T matrix method (TMM) are employed to investigate the three-dimensional radiation torques of both spherical and nonspherical objects in a single Bessel beam over broader frequencies (from Rayleigh scattering to geometric-optics regimes), with emphasis on the parametric conditions for torque reversal and the corresponding physical mechanisms. For elastic objects, the dipole, quadrupole, and even several higherscattering modes are dominant to induce the axial ARTs beyond the Rayleigh limit with a relatively large offset from the particle centroid to the beam axis in Bessel beams. The reversals appear with parametric conditions (including wave number, cone angle, and offset) for the extrema or null values of the corresponding cylindrical Bessel functions. The reversal of transverse ART from a rigid nonspherical particle is also investigated in an ordinary Bessel beam and the geometrical surface roughness is briefly studied for the effect on the radiation torques. This suggests the possibility of acoustic tweezers controlling the spinning motion of particles within and beyond the Rayleigh limit.

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Section: Introductionmentioning

confidence: 99%

Reversals of Acoustic Radiation Torque in Bessel Beams Using Theoretical and Numerical Implementations in Three Dimensions

Gong

Marston

2019

Phys. Rev. Applied

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Numerical investigation of particle deflection in tilted-angle standing surface acoustic wave microfluidic devices

Peng

Zhou

Yuan

et al. 2022

Applied Mathematical Modelling

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Acoustophoresis in suspensions with local and time-discrete sound fields based on the time reversal technique

Hörnlein

Wöckel

Arndt

et al. 2022

J. Sens. Sens. Syst.

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Abstract. In this paper, a new approach of three-dimensional acoustic particle manipulation (acoustophoresis) in closed and liquid-filled vessels based on the time reversal technique is discussed. Based on simulation studies, this work investigates the technical prerequisites to achieve appropriate acoustic radiation forces (ARFs) for the manipulation of small particles with the time reversal method by utilizing multiple reflections in a closed vessel. The time-discrete and localized acoustic pressure field required for this purpose is generated by a time reversal mirror composed of 24 piezoceramic transducers. The paper also gives an outlook on practical evaluation of the simulation results based on a demonstrator setup.

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Particle manipulation using macroscale angled ultrasonic standing waves

Cited by 3 publications

References 19 publications

Reversals of Acoustic Radiation Torque in Bessel Beams Using Theoretical and Numerical Implementations in Three Dimensions

Reversals of Acoustic Radiation Torque in Bessel Beams Using Theoretical and Numerical Implementations in Three Dimensions

Numerical investigation of particle deflection in tilted-angle standing surface acoustic wave microfluidic devices

Acoustophoresis in suspensions with local and time-discrete sound fields based on the time reversal technique

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