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Ultrasound-stimulated translation of microparticles on the surface of a LiNbO3 plate

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Abstract

We observed the translation of SiC microparticles on the surface of a LiNbO3 waveguide plate, stimulated by ultrasound of various frequencies. It was established that probabilities of the forward and reverse translations (along and against the ultrasound propagation direction, respectively) are close for the a 1 mode of the Lamb waves, while excitation of the s 1 mode leads to preferential direct translation of the microparticles. Metallization of the surface of the LiNbO3 plate leads to a significant decrease in the fraction of particles translated by the s 1 mode. The observed phenomenon is interpreted within the framework of a model taking into account the character of oscillations of particles at the LiNbO3 surface excited in the a 1 and s 1 modes, as well as the existence of a variable piezoelectric field accompanying the ultrasonic action. It is suggested that the observed effect can be used for the translation of neutral and charged microparticles, including biological objects.

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Authors and Affiliations

  1. Kiev National University, Kiev, Ukraine

    A. N. Gorb & O. A. Korotchenkov

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  1. A. N. Gorb
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  2. O. A. Korotchenkov
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Translated from Pis’ma v Zhurnal Tekhnichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 28, No. 17, 2002, pp. 67–73.

Original Russian Text Copyright © 2002 by Gorb, Korotchenkov.

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Gorb, A.N., Korotchenkov, O.A. Ultrasound-stimulated translation of microparticles on the surface of a LiNbO3 plate. Tech. Phys. Lett. 28, 740–742 (2002). https://doi.org/10.1134/1.1511770

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  • DOI: https://doi.org/10.1134/1.1511770

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