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Microfluidic waveguides for frequency-based pumping

Microfluidic waveguides for frequency-based pumping
Microfluidic waveguides for frequency-based pumping
Frequency-based control of fluid transport using fluidic networks with deformable features holds the potential to greatly simplify flow control in bioanalytical microchips, by enabling channel switching with a single active element. This paper describes a fluidic waveguide (analogous to cable in electronics) consisting of a millimeter-sized channel enclosed on one side with a deformable membrane. Dynamic coupling between the membrane deformation and pressure waves in channel is shown to lower the wave speed to 10-50 m/, thus combining frequencies in the range of ~0.5-3 kHz with wavelengths of 1-50 millimeters, with acceptably low attenuation. As a result, it is feasible to construct fluidic filters that transmit pressures to remote locations (centimeters from the source), by combining the waveguide with passive pressure-activated diodes (check valves). Results are shown to illustrate effective device characteristics that will lead to useful performance for flow control.
978-0-9798064-4-5
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b
Begley, M.R.
1af47c8b-7d66-47bf-9669-4541d68e2994
Utz, Marcel
c84ed64c-9e89-4051-af39-d401e423891b
Begley, M.R.
1af47c8b-7d66-47bf-9669-4541d68e2994

Utz, Marcel and Begley, M.R. (2011) Microfluidic waveguides for frequency-based pumping. 15th International Conference on Miniaturized Systems for Chemistry and Life Sciences, Seattle, United States. 02 - 06 Oct 2011.

Record type: Conference or Workshop Item (Paper)

Abstract

Frequency-based control of fluid transport using fluidic networks with deformable features holds the potential to greatly simplify flow control in bioanalytical microchips, by enabling channel switching with a single active element. This paper describes a fluidic waveguide (analogous to cable in electronics) consisting of a millimeter-sized channel enclosed on one side with a deformable membrane. Dynamic coupling between the membrane deformation and pressure waves in channel is shown to lower the wave speed to 10-50 m/, thus combining frequencies in the range of ~0.5-3 kHz with wavelengths of 1-50 millimeters, with acceptably low attenuation. As a result, it is feasible to construct fluidic filters that transmit pressures to remote locations (centimeters from the source), by combining the waveguide with passive pressure-activated diodes (check valves). Results are shown to illustrate effective device characteristics that will lead to useful performance for flow control.

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More information

Published date: October 2011
Venue - Dates: 15th International Conference on Miniaturized Systems for Chemistry and Life Sciences, Seattle, United States, 2011-10-02 - 2011-10-06
Organisations: Chemistry, Faculty of Natural and Environmental Sciences, Magnetic Resonance

Identifiers

Local EPrints ID: 360212
URI: http://eprints.soton.ac.uk/id/eprint/360212
ISBN: 978-0-9798064-4-5
PURE UUID: 1ecb187f-d4d0-4f6e-abdb-6e88f4ac9492
ORCID for Marcel Utz: ORCID iD orcid.org/0000-0003-2274-9672

Catalogue record

Date deposited: 29 Nov 2013 13:59
Last modified: 20 Jul 2019 00:40

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