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Ultra-sensitive and wide-dynamic-range sensors based on dense arrays of carbon nanotube tips

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Ultra-sensitive and wide-dynamic-range sensors based on dense arrays of carbon nanotube tips

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dc.contributor.author Sun, Gengzhi
dc.contributor.author Huang, Yinxi
dc.contributor.author Zheng, Lianxi
dc.contributor.author Zhan, Zhaoyao
dc.contributor.author Zhang, Yani
dc.contributor.author Pang, John Hock Lye
dc.contributor.author Wu, Tom
dc.contributor.author Chen, Peng
dc.date.accessioned 2012-03-01T08:39:41Z
dc.date.available 2012-03-01T08:39:41Z
dc.date.copyright 2011
dc.date.issued 2012-03-01
dc.identifier.citation Sun, G., Huang, Y., Zheng, L., Zhan, Z., Zhang, Y., Pang, J. H. L., et al. (2011). Ultra-sensitive and wide-dynamic-range sensors based on dense arrays of carbon nanotube tips. Nanoscale, 3, 4854-4858.
dc.identifier.uri http://hdl.handle.net/10220/7587
dc.description.abstract Electrochemical electrodes based on dense and vertically aligned arrays of multi-walled carbon nanotubes (MWCNTs) were produced. The open tips of individual hollow nanotubes are exposed as active sites while the entangled nanotube stems encapsulated in epoxy collectively provide multiplexed and highly conductive pathways for charge transport. This unique structure together with the extraordinary electrical and electrochemical properties of MWCNTs offers a high signal-to-noise ratio (thus high sensitivity) and a large detection range, compared with other carbon-based electrodes. Our electrodes can detect K3FeCN6 and dopamine at concentrations as low as 5 nM and 10 nM, respectively, and are responsive in a large dynamic range that spans almost 5 orders of magnitude.
dc.format.extent 5 p.
dc.language.iso en
dc.relation.ispartofseries Nanoscale
dc.rights © 2011 Royal Society of Chemistry. This is the author created version of a work that has been peer reviewed and accepted for publication by Nanoscale, Royal Society of Chemistry. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1039/c1nr10899a].
dc.subject DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics.
dc.title Ultra-sensitive and wide-dynamic-range sensors based on dense arrays of carbon nanotube tips
dc.type Journal Article
dc.contributor.school School of Mechanical and Aerospace Engineering
dc.identifier.doi http://dx.doi.org/10.1039/c1nr10899a
dc.description.version Accepted version
dc.identifier.rims 163169

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