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Issue 9, 2014
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Polymer-based acoustic streaming for improving mixing and reaction times in microfluidic applications

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Abstract

This paper reports on a polymer-based piezoelectric transducer used in microfluidic structures for generating acoustic waves, and consequently, the acoustic streaming phenomenon, that will improve the mixing of fluids. The piezoelectric transducer is based on a poly(vinylidene fluoride-trifluoroethylene), P(VDF-TrFE), copolymer with conductive transparent electrodes of aluminum doped zinc oxide (AZO). The efficiency of the optimized piezoelectric P(VDF-TrFE) transducer on mixing fluids was studied using two diagnostic kits for the quantification of uric acid and nitrite in blood. In both cases, acoustic streaming reduced the reaction time for the quantification of each biomolecule when compared to the reaction time achieved only by diffusion, with gains of 23% and of 32% for the uric acid and nitrite, respectively. These results contribute to increase the efficiency in fluid mixing and therefore to improve the overall performance of miniaturized analysis systems.

Graphical abstract: Polymer-based acoustic streaming for improving mixing and reaction times in microfluidic applications

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Publication details

The article was received on 05 Nov 2013, accepted on 22 Nov 2013 and first published on 25 Nov 2013


Article type: Paper
DOI: 10.1039/C3RA46420B
Citation: RSC Adv., 2014,4, 4292-4300
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    Polymer-based acoustic streaming for improving mixing and reaction times in microfluidic applications

    V. F. Cardoso, T. Knoll, T. Velten, L. Rebouta, P. M. Mendes, S. Lanceros-Méndez and G. Minas, RSC Adv., 2014, 4, 4292
    DOI: 10.1039/C3RA46420B

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