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Microfluidic device for compositional analysis of solvent systems at microwave frequencies

Microfluidic device for compositional analysis of solvent systems at microwave frequencies
Microfluidic device for compositional analysis of solvent systems at microwave frequencies
A device for analysing the chemical composition of single- and multi-phase solvent flows using microfluidic dielectric spectroscopy is demonstrated in this work. An open-circuited, half-wavelength, coaxial resonator operating at microwave frequencies (i.e. harmonics of 600 MHz) was embedded in a compression-sealed polytetrafluoroethylene microfluidic chip for in situ characterization of solvent–solvent and solute–solvent mixtures of varying concentration, and an aqueous–organic segmented flow. Results are shown for a solvent mixture of acetonitrile in toluene as a test system, exhibiting a sensitivity limit of 400 nM. In addition to being highly sensitive, the measurement system is fast, robust and non-invasive, and can be readily miniaturized.
0925-4005
213-221
Rowe, David J.
a0e0fe82-5e29-42b8-b370-5236a722f015
Porch, Adrian
e84c59a9-0e83-4785-9118-200f30b02851
Barrow, David A.
4975dfcd-6b27-4900-a4c9-c348bf24fea9
Allender, Christopher J.
5bd7fef3-7275-4c47-bbca-a7d7a364f679
Rowe, David J.
a0e0fe82-5e29-42b8-b370-5236a722f015
Porch, Adrian
e84c59a9-0e83-4785-9118-200f30b02851
Barrow, David A.
4975dfcd-6b27-4900-a4c9-c348bf24fea9
Allender, Christopher J.
5bd7fef3-7275-4c47-bbca-a7d7a364f679

Rowe, David J., Porch, Adrian, Barrow, David A. and Allender, Christopher J. (2012) Microfluidic device for compositional analysis of solvent systems at microwave frequencies. Sensors and Actuators B: Chemical, 169, 213-221. (doi:10.1016/j.snb.2012.04.069).

Record type: Article

Abstract

A device for analysing the chemical composition of single- and multi-phase solvent flows using microfluidic dielectric spectroscopy is demonstrated in this work. An open-circuited, half-wavelength, coaxial resonator operating at microwave frequencies (i.e. harmonics of 600 MHz) was embedded in a compression-sealed polytetrafluoroethylene microfluidic chip for in situ characterization of solvent–solvent and solute–solvent mixtures of varying concentration, and an aqueous–organic segmented flow. Results are shown for a solvent mixture of acetonitrile in toluene as a test system, exhibiting a sensitivity limit of 400 nM. In addition to being highly sensitive, the measurement system is fast, robust and non-invasive, and can be readily miniaturized.

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More information

Published date: July 2012
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 363105
URI: http://eprints.soton.ac.uk/id/eprint/363105
ISSN: 0925-4005
PURE UUID: 618bb480-7e8b-4ca7-b0fe-e231b9b74553
ORCID for David J. Rowe: ORCID iD orcid.org/0000-0002-1167-150X

Catalogue record

Date deposited: 20 Mar 2014 11:52
Last modified: 09 Jan 2022 03:41

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Contributors

Author: David J. Rowe ORCID iD
Author: Adrian Porch
Author: David A. Barrow
Author: Christopher J. Allender

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