Rowe, David James, Porch, Adrian, Barrow, David Anthony and Allender, Christopher John 2012. Microfluidic device for compositional analysis of solvent systems at microwave frequencies. Sensors and Actuators B: Chemical 169 , pp. 213-221. 10.1016/j.snb.2012.04.069 |
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.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Engineering Pharmacy |
Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
Uncontrolled Keywords: | Dielectric measurements; Microwave sensors; Microfluidics |
Publisher: | Elsevier |
ISSN: | 0925-4005 |
Last Modified: | 09 Jul 2020 14:59 |
URI: | http://orca-mwe.cf.ac.uk/id/eprint/36743 |
Citation Data
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