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DNA sensing by field-effect transistors based on networks of carbon nanotubes

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DNA sensing by field-effect transistors based on networks of carbon nanotubes

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dc.contributor.author Gui, Ee Ling
dc.contributor.author Li, Lain-Jong
dc.contributor.author Zhang, Keke
dc.contributor.author Xu, Yangping
dc.contributor.author Dong, Xiaochen
dc.contributor.author Ho, Xinning
dc.contributor.author Lee, Pooi See
dc.contributor.author Kasim, Johnson
dc.contributor.author Shen, Zexiang
dc.contributor.author Rogers, John A.
dc.contributor.author Mhaisalkar, Subodh Gautam
dc.date.accessioned 2012-09-13T00:54:41Z
dc.date.available 2012-09-13T00:54:41Z
dc.date.copyright 2007
dc.date.issued 2012-09-13
dc.identifier.citation Gui, E. L., Li, L. J., Zhang, K., Xu, Y., Dong, X., Ho, X., et al. (2007). DNA sensing by field-effect transistors based on networks of carbon nanotubes. Journal of the American chemical society, 129(46), 14427-14432.
dc.identifier.uri http://hdl.handle.net/10220/8506
dc.description.abstract We report on the sensing mechanism of electrical detection of deoxyribonucleic acid (DNA) hybridization for Au- and Cr-contacted field effect transistors based on single-walled carbon nanotube (SWCNT) networks. Barrier height extraction via low-temperature electrical measurement provides direct evidence for the notion that the energy level alignment between electrode and SWCNTs can be affected by DNA immobilization and hybridization. The study of location-selective capping using photoresist provides comprehensive evidence that the sensing of DNA is dominated by the change in metal−SWCNT junctions rather than the channel conductance.
dc.language.iso en
dc.relation.ispartofseries Journal of the American chemical society
dc.rights © 2007 American Chemical Society
dc.subject DRNTU::Engineering::Materials.
dc.title DNA sensing by field-effect transistors based on networks of carbon nanotubes
dc.type Journal Article
dc.contributor.school School of Materials Science and Engineering
dc.identifier.doi http://dx.doi.org/10.1021/ja075176g

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