Independent trapping and manipulation of microparticles using dexterous acoustic tweezers
C. R. P. Courtney,Christine E. M. Demore,Hongxiao Wu,A. Grinenko,Paul D. Wilcox,Sandy Cochran,Bruce W. Drinkwater +6 more
TLDR
In this paper, an electronically controlled acoustic tweezer was used to demonstrate two acoustic manipulation phenomena: superposition of Bessel functions to allow independent manipulation of multiple particles and the use of higher-order Bessel function to trap particles in larger regions than is possible with first-order traps.Abstract:
An electronically controlled acoustic tweezer was used to demonstrate two acoustic manipulation phenomena: superposition of Bessel functions to allow independent manipulation of multiple particles and the use of higher-order Bessel functions to trap particles in larger regions than is possible with first-order traps. The acoustic tweezers consist of a circular 64-element ultrasonic array operating at 2.35 MHz which generates ultrasonic pressure fields in a millimeter-scale fluid-filled chamber. The manipulation capabilities were demonstrated experimentally with 45 and 90-μm-diameter polystyrene spheres. These capabilities bring the dexterity of acoustic tweezers substantially closer to that of optical tweezers.read more
Citations
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Holograms for acoustics.
TL;DR: This work introduces monolithic acoustic holograms, which can reconstruct diffraction-limited acoustic pressure fields and thus arbitrary ultrasound beams and is expected to enable new capabilities in beam-steering and the contactless transfer of power, improve medical imaging, and drive new applications of ultrasound.
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Holographic acoustic tweezers
Asier Marzo,Bruce W. Drinkwater +1 more
TL;DR: This work presents the realization of holographic acoustic tweezers (HAT), a system implemented using two 256-emitter phased arrays and able to manipulate individually up to 25 millimetric particles simultaneously.
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Observation of a Single-Beam Gradient Force Acoustical Trap for Elastic Particles: Acoustical Tweezers.
TL;DR: The trapping of elastic particles by the large gradient force of a single acoustical beam in three dimensions is demonstrated, demonstrating the large spectrum of frequencies covered by coherent ultrasonic sources and could open the way to important applications in biology and biophysics at the cellular scale and for the design of acoustic machines in microfluidic environments.
Journal ArticleDOI
Acoustic Virtual Vortices with Tunable Orbital Angular Momentum for Trapping of Mie Particles.
TL;DR: It is shown that particles trapped in airborne acoustic vortices orbit at high speeds, leading to dynamic instability and ejection, and, for the first time, three-dimensional acoustics traps for particles of wavelength order are created.
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Single-molecule techniques in biophysics: a review of the progress in methods and applications.
TL;DR: In this paper, the authors discuss the motivation and requirements for these recent experiments, including the underpinning mathematics, and discuss exciting new directions for single-molecule biophysics.
References
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Chip integrated strategies for acoustic separation and manipulation of cells and particles
TL;DR: This tutorial review outlines the fundamental work performed on continuous flow acoustic standing wave separation of particles in macro scale systems and discusses several potential applications in life science research and in the medical clinic.
Journal ArticleDOI
On-chip manipulation of single microparticles, cells, and organisms using surface acoustic waves
Xiaoyun Ding,Sz-Chin Steven Lin,Brian Kiraly,Hongjun Yue,Sixing Li,I-Kao Chiang,Jinjie Shi,Stephen J. Benkovic,Tony Jun Huang +8 more
TL;DR: Standing surface acoustic wave based “acoustic tweezers” are demonstrated that can trap and manipulate single microparticles, cells, and entire organisms in a single-layer microfluidic chip and will become a powerful tool for many disciplines of science and engineering.
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Acoustophoretic contactless transport and handling of matter in air
Daniele Foresti,Dimos Poulikakos +1 more
TL;DR: A path-breaking concept is proposed to harvest the significant benefits of acoustic levitation in air by allowing continuous planar transport and processing of multiple objects, from near-spherical to wire-like, without being limited by the acoustic wavelength.
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Axial radiation force of a bessel beam on a sphere and direction reversal of the force.
TL;DR: An expression is derived for the radiation force on a sphere placed on the axis of an ideal acoustic Bessel beam propagating in an inviscid fluid using the partial-wave coefficients found in the analysis of the scattering when the sphere is placed in a plane wave traveling in the same external fluid.
Journal ArticleDOI
Single beam acoustic trapping.
TL;DR: A single beam acoustic device, with its relatively simple scheme and low intensity, can trap a single lipid droplet in a manner similar to optical tweezers, and can be a useful tool for particle manipulation in areas where larger particles or forces are involved.