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Proceedings Paper

Ultrasonic standing wave generator for a smart particle separating device
Author(s): Dong-Jin Yoon; Young-Sup Lee; Jaehwa Kwon
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Paper Abstract

This paper presents the theory, design, and evaluation of a smart device for the enhanced separation of particles mixed in fluid. The smart device takes advantage of the ultrasonic standing wave, which was generated by the operation of a piezoceramic PZT patch installed in the smart device. The details of the device design including the electro-acoustical modelling for separation and PZT transducer are described at first. Based on this design, the separation device was fabricated and evaluated. In the experiments, an optical camera with a zoom lense was used to monitor the position of interested particles within the separation channel layer in the device. The electric impedance of the PZT patch bonded on the separation device was measured. The device shows a strong levitation force against 50μm diameter sand particles mixed with water at the separation channel in the device. Experimetal results also showed that the device can levitate both heavy and light settled sand particles clouds on the bottom to the nodal lines of the generated standing wave field in the separation channel.

Paper Details

Date Published: 28 February 2005
PDF: 8 pages
Proc. SPIE 5649, Smart Structures, Devices, and Systems II, (28 February 2005); doi: 10.1117/12.582506
Show Author Affiliations
Dong-Jin Yoon, Korea Research Institute of Standards and Science (South Korea)
Young-Sup Lee, Korea Research Institute of Standards and Science (South Korea)
Jaehwa Kwon, Korea Research Institute of Standards and Science (South Korea)

Published in SPIE Proceedings Vol. 5649:
Smart Structures, Devices, and Systems II
Said F. Al-Sarawi, Editor(s)

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