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Dielectrophoresis-Raman spectroscopy system for analysing suspended nanoparticles

Chrimes, Adam F., Kayani, Aminuddin A., Khoshmanesh, Khashayar, Stoddart, Paul R., Mulvaney, Paul, Mitchell, Arnan and Kalantar-Zadeh, Kourosh 2011, Dielectrophoresis-Raman spectroscopy system for analysing suspended nanoparticles, Lab on a chip, vol. 11, no. 5, pp. 921-928, doi: 10.1039/c0lc00481b.

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Title Dielectrophoresis-Raman spectroscopy system for analysing suspended nanoparticles
Author(s) Chrimes, Adam F.
Kayani, Aminuddin A.
Khoshmanesh, Khashayar
Stoddart, Paul R.
Mulvaney, Paul
Mitchell, Arnan
Kalantar-Zadeh, Kourosh
Journal name Lab on a chip
Volume number 11
Issue number 5
Start page 921
End page 928
Publisher Royal Society of Chemistry
Place of publication Cambridge, U. K.
Publication date 2011
ISSN 1473-0197
Summary A microfluidic dielectrophoresis platform consisting of curved microelectrodes was developed and integrated with a Raman spectroscopy system. The electrodes were patterned on a quartz substrate, which has insignificant Raman response, and integrated with a microfluidic channel that was imprinted in poly-dimethylsiloxane (PDMS). We will show that this novel integrated system can be efficiently used for the determination of suspended particle types and the direct mapping of their spatial concentrations. We will also illustrate the system's unique advantages over conventional optical systems. Nanoparticles of tungsten trioxide (WO3) and polystyrene were used in the investigations, as they are Raman active and can be homogeneously suspended in water.
Language eng
DOI 10.1039/c0lc00481b
Field of Research 091306 Microelectromechanical Systems (MEMS)
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2011, The Royal Society of Chemistry.
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Document type: Journal Article
Collection: Centre for Intelligent Systems Research
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Created: Mon, 05 Dec 2011, 12:52:46 EST

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