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Issue 2, 2017
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Trapping of Au nanoparticles in a microfluidic device using dielectrophoresis for surface enhanced Raman spectroscopy

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Abstract

Dielectrophoresis (DEP) is the electrokinetic movement of non-charged particles when they are subjected to a non-uniform electric field. This is a growing area of research, which can be used for trapping, concentrating and separating different particles. Some work has been reported with the intention of trapping metal particles to optimize the surface enhanced Raman spectroscopy (SERS) effect. In this paper, we use DEP with insulating structures (iDEP) to generate a non-uniform electric field for trapping gold nanoparticles (AuNP). The system was coupled to a Raman spectrometer for the detection of Crystal Violet by utilizing the SERS effect.

Graphical abstract: Trapping of Au nanoparticles in a microfluidic device using dielectrophoresis for surface enhanced Raman spectroscopy

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Supplementary files

Article information


Submitted
01 Jul 2016
Accepted
10 Dec 2016
First published
12 Dec 2016

Analyst, 2017,142, 375-379
Article type
Paper

Trapping of Au nanoparticles in a microfluidic device using dielectrophoresis for surface enhanced Raman spectroscopy

G. B. Almeida, R. J. Poppi and J. A. F. da Silva, Analyst, 2017, 142, 375
DOI: 10.1039/C6AN01497F

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