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
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Townsend, Rosemary J.
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Harris, Nicholas R.
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Cranny, Andrew W.
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Melvin, Tracy
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Zhang, Fan
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Wilkinson, James S.
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September 2007
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.
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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.
19th International Congress on Acoustics (ICA 2007), Madrid, Spain.
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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Published date: September 2007
Venue - Dates:
19th International Congress on Acoustics (ICA 2007), Madrid, Spain, 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
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Date deposited: 22 Oct 2007
Last modified: 07 Dec 2024 02:37
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Contributors
Author:
Rosemary J. Townsend
Author:
Nicholas R. Harris
Author:
Andrew W. Cranny
Author:
Tracy Melvin
Author:
Fan Zhang
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