Exposure of unfedRhipicephalus evertsi mimeticus adults to single-frequency acoustic waves

Heinrich Kalvelage; Thomas M�ckl; Rainer Gothe

doi:10.1007/bf00930967

Acoustophoretic Control of Microparticle Transport Using Dual-Wavelength Surface Acoustic Wave Devices

Micromachines ◽

10.3390/mi10010052 ◽

2019 ◽

Vol 10 (1) ◽

pp. 52 ◽

Cited By ~ 4

Author(s):

Jin-Chen Hsu ◽

Chih-Hsun Hsu ◽

Yeo-Wei Huang

Keyword(s):

Particle Motion ◽

Acoustic Waves ◽

Acoustic Pressure ◽

Acoustic Radiation ◽

Surface Acoustic Waves ◽

Microfluidic Channel ◽

Radiation Force ◽

Dual Wavelength ◽

Single Frequency ◽

Motion Trajectories

We present a numerical and experimental study of acoustophoretic manipulation in a microfluidic channel using dual-wavelength standing surface acoustic waves (SSAWs) to transport microparticles into different outlets. The SSAW fields were excited by interdigital transducers (IDTs) composed of two different pitches connected in parallel and series on a lithium niobate substrate such that it yielded spatially superimposed and separated dual-wavelength SSAWs, respectively. SSAWs of a singltablee target wavelength can be efficiently excited by giving an RF voltage of frequency determined by the ratio of the velocity of the SAW to the target IDT pitch (i.e., f = cSAW/p). However, the two-pitch IDTs with similar pitches excite, less efficiently, non-target SSAWs with the wavelength associated with the non-target pitch in addition to target SSAWs by giving the target single-frequency RF voltage. As a result, dual-wavelength SSAWs can be formed. Simulated results revealed variations of acoustic pressure fields induced by the dual-wavelength SSAWs and corresponding influences on the particle motion. The acoustic radiation force in the acoustic pressure field was calculated to pinpoint zero-force positions and simulate particle motion trajectories. Then, dual-wavelength SSAW acoustofluidic devices were fabricated in accordance with the simulation results to experimentally demonstrate switching of SSAW fields as a means of transporting particles. The effects of non-target SSAWs on pre-actuating particles were predicted and observed. The study provides the design considerations needed for the fabrication of acoustofluidic devices with IDT-excited multi-wavelength SSAWs for acoustophoresis of microparticles.

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Single-frequency active Q-switched distributed fiber laser using acoustic waves

Applied Physics Letters ◽

10.1063/1.2732832 ◽

2007 ◽

Vol 90 (17) ◽

pp. 171110 ◽

Cited By ~ 19

Author(s):

Martina Delgado-Pinar ◽

Antonio Díez ◽

José Luis Cruz ◽

Miguel V. Andrés

Keyword(s):

Fiber Laser ◽

Acoustic Waves ◽

Single Frequency

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Measuring the volume charge in dielectric films using single frequency electro-acoustic waves

Journal of Materials Research ◽

10.1557/jmr.2014.20 ◽

2014 ◽

Vol 29 (4) ◽

pp. 501-508 ◽

Cited By ~ 1

Author(s):

Dongfei Pei ◽

Yuri M. Shkel ◽

Daniel J. Klingenberg ◽

Zakai I. Segal ◽

Yoshio Nishi ◽

...

Keyword(s):

Acoustic Waves ◽

Single Frequency ◽

Dielectric Films ◽

Volume Charge ◽

Image Position

Abstract

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Response of curved premixed flames to single-frequency and wideband acoustic waves

Combustion and Flame ◽

10.1016/j.combustflame.2014.05.002 ◽

2014 ◽

Vol 161 (11) ◽

pp. 2868-2877 ◽

Cited By ~ 5

Author(s):

Hemdan Shalaby ◽

Kai H. Luo ◽

Dominique Thévenin

Keyword(s):

Acoustic Waves ◽

Premixed Flames ◽

Single Frequency

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Sound Radiation of the Resonator in the Form of a Vibrating Circular Plate Embedded in the Outlet of the Circular Cylindrical Cavity

Journal of Computational Acoustics ◽

10.1142/s0218396x16500181 ◽

2016 ◽

Vol 24 (04) ◽

pp. 1650018 ◽

Cited By ~ 2

Author(s):

Wojciech P. Rdzanek ◽

Witold J. Rdzanek ◽

Krzysztof Szemela

Keyword(s):

Circular Plate ◽

Half Space ◽

Cylindrical Cavity ◽

Acoustic Waves ◽

Acoustic Pressure ◽

Sound Radiation ◽

Free Vibrations ◽

Single Frequency ◽

Helmholtz Equations ◽

Circular Cylindrical Cavity

The Neumann axisymmetric boundary value problem is considered for a vibrating thin clamped circular plate embedded in the flat rigid screen in the outlet of the circular cylindrical cavity. It is assumed that the two pistons, one cylindrical and the other one annular/circular, are vibrating inside the cavity with the same single frequency and different initial phases. The pistons are the only sources of excitation of the fluid. The acoustic pressure difference on both sides of the plate forces its vibrations. The acoustic waves are radiated into the half-space above it. A rigorous theoretical analysis of sound radiation has been performed based on the exact solution of the problem of free vibrations of the plate. The system of three coupled partial differential equations is solved. They are the two Helmholtz equations for the cavity and for the half-space, and the equation of motion of the plate. Consequently, the acoustic pressure distribution in both spaces is presented as well as the acoustic power radiated.

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Characterization of RF Sputtered ZnO Piezoelectric Films Using Transmission Electron Microscope

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100114050 ◽

1975 ◽

Vol 33 ◽

pp. 86-87

Author(s):

Kemining W. Yeh ◽

Richard S. Muller ◽

Wei-Kuo Wu ◽

Jack Washburn

Keyword(s):

Integrated Circuit ◽

Acoustic Waves ◽

New Technology ◽

Surface Acoustic Waves ◽

Electromechanical Properties ◽

Leading Role ◽

Saw Devices ◽

Transmission Electron ◽

High Degree

Considerable and continuing interest has been shown in the thin film transducer fabrication for surface acoustic waves (SAW) in the past few years. Due to the high degree of miniaturization, compatibility with silicon integrated circuit technology, simplicity and ease of design, this new technology has played an important role in the design of new devices for communications and signal processing. Among the commonly used piezoelectric thin films, ZnO generally yields superior electromechanical properties and is expected to play a leading role in the development of SAW devices.

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