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Nodal position in planar resonators for ultrasonic manipulation

Hill, Martyn, Glynne-Jones, Peter, Townsend, Rosemary J., Harris, Nicholas R., Cranny, Andrew W., Melvin, Tracy, Zhang, Fan and Wilkinson, James S. (2007) Nodal position in planar resonators for ultrasonic manipulation At 19th International Congress on Acoustics (ICA 2007). 02 - 07 Sep 2007.

Record type: Conference or Workshop Item (Paper)


Ultrasonic manipulation of particles has significant potential, particularly in microfluidic devices for controlling and trapping biological cells. One approach to particle manipulation employs planar standing waves to move particles to pressure nodes. Devices with axial dimensions less than a wavelength are well-suited to use in microfluidic systems. The nodal planes in such devices can be positioned at any axial position within the device by appropriate choice of materials and dimensions. Resonators that excite near quarter wave modes within a fluid can be used to force particles onto a surface or to position particles near a surface to enhance particulate concentration prior to sensing. However the position of the node is sensitive to a large number of parameters, some of which are difficult to determine without specific experimental data. This paper describes applications of quarter wave resonators and discusses the design of devices that provide the required nodal position for different applications.

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Published date: September 2007
Venue - Dates: 19th International Congress on Acoustics (ICA 2007), 2007-09-02 - 2007-09-07


Local EPrints ID: 48992
PURE UUID: 15013c7a-7bec-4fe2-8662-d64a0aced432
ORCID for Martyn Hill: ORCID iD
ORCID for Peter Glynne-Jones: ORCID iD
ORCID for Nicholas R. Harris: ORCID iD
ORCID for James S. Wilkinson: ORCID iD

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Date deposited: 22 Oct 2007
Last modified: 17 Jul 2017 14:57

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Author: Martyn Hill ORCID iD
Author: Rosemary J. Townsend
Author: Nicholas R. Harris ORCID iD
Author: Andrew W. Cranny
Author: Tracy Melvin
Author: Fan Zhang

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