Microfluidic device for compositional analysis of solvent systems at microwave frequencies

Rowe, David James, Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883, Barrow, David Anthony ORCID: https://orcid.org/0000-0003-2096-7262 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

Full text not available from this repository.

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
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:	21 Oct 2022 09:31
URI:	https://orca.cardiff.ac.uk/id/eprint/36743

Citation Data

Cited 35 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item