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Issue 16, 2015
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Reversible nanostructuration of microfluidic electrode devices by CNT magnetic co-entrapment

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Abstract

Carbon nanotubes (CNTs) have been extensively used to produce electrodes of enhanced performance but have only been very recently exploited in microfluidic devices. In these cases, CNT electrodes had to be produced prior to device assembly, which might damage the CNT layer. Here, we show a fast and simple method for the reversible nanostructuration of microfluidic electrode devices in situ. The procedure is based on the attachment of single-walled CNTs (SWCNTs) onto the surface of magnetic particles (MPs) and magnetic confinement of the MP/SWCNT composite onto the sensor in a two-step process that provided homogeneous coating. As it is shown, subsequent magnet removal allows MP/SWCNT release and electrode reutilization. Compared to most previously described methods, ours is faster, simpler and also reversible.

Graphical abstract: Reversible nanostructuration of microfluidic electrode devices by CNT magnetic co-entrapment

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Article information


Submitted
22 May 2015
Accepted
29 Jun 2015
First published
29 Jun 2015

Lab Chip, 2015,15, 3269-3273
Article type
Technical Innovation
Author version available

Reversible nanostructuration of microfluidic electrode devices by CNT magnetic co-entrapment

Z. Herrasti, F. Martínez and E. Baldrich, Lab Chip, 2015, 15, 3269
DOI: 10.1039/C5LC00573F

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