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Nodal position in planar resonators for ultrasonic manipulation

Nodal position in planar resonators for ultrasonic manipulation
Nodal position in planar resonators for ultrasonic manipulation
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.
Hill, Martyn
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Glynne-Jones, Peter
6ca3fcbc-14db-4af9-83e2-cf7c8b91ef0d
Townsend, Rosemary J.
0452b21c-a758-4d4a-925b-1511d9296d62
Harris, Nicholas R.
237cfdbd-86e4-4025-869c-c85136f14dfd
Cranny, Andrew W.
2ebc2ccb-7d3e-4a6a-91ac-9f089741939e
Melvin, Tracy
fd87f5eb-2bb9-48fa-b7be-7100ace9c50f
Zhang, Fan
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Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca
Hill, Martyn
0cda65c8-a70f-476f-b126-d2c4460a253e
Glynne-Jones, Peter
6ca3fcbc-14db-4af9-83e2-cf7c8b91ef0d
Townsend, Rosemary J.
0452b21c-a758-4d4a-925b-1511d9296d62
Harris, Nicholas R.
237cfdbd-86e4-4025-869c-c85136f14dfd
Cranny, Andrew W.
2ebc2ccb-7d3e-4a6a-91ac-9f089741939e
Melvin, Tracy
fd87f5eb-2bb9-48fa-b7be-7100ace9c50f
Zhang, Fan
22a0ac7a-2068-4eef-a441-c8efb8f24ed0
Wilkinson, James S.
73483cf3-d9f2-4688-9b09-1c84257884ca

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)

Abstract

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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More information

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

Identifiers

Local EPrints ID: 48992
URI: http://eprints.soton.ac.uk/id/eprint/48992
PURE UUID: 15013c7a-7bec-4fe2-8662-d64a0aced432
ORCID for Martyn Hill: ORCID iD orcid.org/0000-0001-6448-9448
ORCID for Peter Glynne-Jones: ORCID iD orcid.org/0000-0001-5684-3953
ORCID for Nicholas R. Harris: ORCID iD orcid.org/0000-0003-4122-2219
ORCID for James S. Wilkinson: ORCID iD orcid.org/0000-0003-4712-1697

Catalogue record

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

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Contributors

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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