The University of Southampton
University of Southampton Institutional Repository

The influence of carrier layer material in ultrasonic particle manipulation devices

The influence of carrier layer material in ultrasonic particle manipulation devices
The influence of carrier layer material in ultrasonic particle manipulation devices
The use of acoustic radiation forces for the manipulation of particles, bacteria and cells is drawing increasing interest. Resonators using quarter-wavelength sized fluid chambers have been developed, where an acoustic pressure node is positioned near the reflector layer surface such that particles may be pushed close to or onto this surface. The thickness of the reflector layer has already been shown to greatly influence the performance of such resonators. These devices have applications in bio-sensing where a concentrate of particulates can be collected or particulates can be contacted with a sensor surface directly.
A coupling layer is usually incorporated into the device and is located between the transducer and fluid layer. The ability of this layer to act as an acoustic matching layer depends on its acoustic properties and thickness. Here, the performance of various carrier layer materials in a near quarter-wavelength device is investigated and compared using modelled and experimental data. Results indicate that where the carrier layer thickness is selected for optimum performance, the resonator performance is comparable for most high Q factor carrier layer materials. However, for some materials the performance of the resonator, is highly sensitive to the coupling layer thicknesses and in turn can constrain the flexibility of the acoustic design.


acoustic radiation force, concentration, particles
Townsend, R.J.
0452b21c-a758-4d4a-925b-1511d9296d62
Hill, M.
0cda65c8-a70f-476f-b126-d2c4460a253e
Harris, N.R.
237cfdbd-86e4-4025-869c-c85136f14dfd
Townsend, R.J.
0452b21c-a758-4d4a-925b-1511d9296d62
Hill, M.
0cda65c8-a70f-476f-b126-d2c4460a253e
Harris, N.R.
237cfdbd-86e4-4025-869c-c85136f14dfd

Townsend, R.J., Hill, M. and Harris, N.R. (2007) The influence of carrier layer material in ultrasonic particle manipulation devices At International Congress on Ultrasonics (2007 ICU Vienna). 09 - 11 Apr 2007.

Record type: Conference or Workshop Item (Other)

Abstract

The use of acoustic radiation forces for the manipulation of particles, bacteria and cells is drawing increasing interest. Resonators using quarter-wavelength sized fluid chambers have been developed, where an acoustic pressure node is positioned near the reflector layer surface such that particles may be pushed close to or onto this surface. The thickness of the reflector layer has already been shown to greatly influence the performance of such resonators. These devices have applications in bio-sensing where a concentrate of particulates can be collected or particulates can be contacted with a sensor surface directly.
A coupling layer is usually incorporated into the device and is located between the transducer and fluid layer. The ability of this layer to act as an acoustic matching layer depends on its acoustic properties and thickness. Here, the performance of various carrier layer materials in a near quarter-wavelength device is investigated and compared using modelled and experimental data. Results indicate that where the carrier layer thickness is selected for optimum performance, the resonator performance is comparable for most high Q factor carrier layer materials. However, for some materials the performance of the resonator, is highly sensitive to the coupling layer thicknesses and in turn can constrain the flexibility of the acoustic design.


Full text not available from this repository.

More information

Published date: April 2007
Venue - Dates: International Congress on Ultrasonics (2007 ICU Vienna), 2007-04-09 - 2007-04-11
Keywords: acoustic radiation force, concentration, particles
Organisations: Mechatronics, EEE

Identifiers

Local EPrints ID: 49059
URI: http://eprints.soton.ac.uk/id/eprint/49059
PURE UUID: 44f51861-e820-4766-a71f-a97f0fc8372d
ORCID for M. Hill: ORCID iD orcid.org/0000-0001-6448-9448
ORCID for N.R. Harris: ORCID iD orcid.org/0000-0003-4122-2219

Catalogue record

Date deposited: 25 Oct 2007
Last modified: 17 Jul 2017 14:57

Export record

Contributors

Author: R.J. Townsend
Author: M. Hill ORCID iD
Author: N.R. Harris ORCID iD

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×