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Article: Label-free electronic detection of DNA using simple double-walled carbon nanotube resistors

TitleLabel-free electronic detection of DNA using simple double-walled carbon nanotube resistors
Authors
Issue Date2008
Citation
Journal of Physical Chemistry C, 2008, v. 112, n. 26, p. 9891-9895 How to Cite?
AbstractLabel-free electrical detection of DNA hybridization using resistive sensing devices based on drop-casted doubled-walled carbon nanotube (DWNT) networks and as-grown films is presented. Sensitive, selective, and reliable detection of DNA hybridization is achieved by simple two-terminal measurements, which is suitable for the hand-held type of device applications. Our approach is able to detect DNA concentrations ranging from 50 to 500 nM. Utilizing location-selective capping by photoresists, we designed experiments to reveal the sensing mechanism and found that the carbon nanotube (CNT)-metal junction may not play a dominant role in sensing as it does in single-walled carbon nanotube-based transistor devices. A charge-transfer model is proposed to explain the detection mechanism. © 2008 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/298461
ISSN
2023 Impact Factor: 3.3
2023 SCImago Journal Rankings: 0.957
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorDong, Xiaochen-
dc.contributor.authorFu, Dongliang-
dc.contributor.authorXu, Yanping-
dc.contributor.authorWei, Jinquan-
dc.contributor.authorShi, Yumeng-
dc.contributor.authorChen, Peng-
dc.contributor.authorLi, Lain Jong-
dc.date.accessioned2021-04-08T03:08:28Z-
dc.date.available2021-04-08T03:08:28Z-
dc.date.issued2008-
dc.identifier.citationJournal of Physical Chemistry C, 2008, v. 112, n. 26, p. 9891-9895-
dc.identifier.issn1932-7447-
dc.identifier.urihttp://hdl.handle.net/10722/298461-
dc.description.abstractLabel-free electrical detection of DNA hybridization using resistive sensing devices based on drop-casted doubled-walled carbon nanotube (DWNT) networks and as-grown films is presented. Sensitive, selective, and reliable detection of DNA hybridization is achieved by simple two-terminal measurements, which is suitable for the hand-held type of device applications. Our approach is able to detect DNA concentrations ranging from 50 to 500 nM. Utilizing location-selective capping by photoresists, we designed experiments to reveal the sensing mechanism and found that the carbon nanotube (CNT)-metal junction may not play a dominant role in sensing as it does in single-walled carbon nanotube-based transistor devices. A charge-transfer model is proposed to explain the detection mechanism. © 2008 American Chemical Society.-
dc.languageeng-
dc.relation.ispartofJournal of Physical Chemistry C-
dc.titleLabel-free electronic detection of DNA using simple double-walled carbon nanotube resistors-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/jp7121714-
dc.identifier.scopuseid_2-s2.0-53549134242-
dc.identifier.volume112-
dc.identifier.issue26-
dc.identifier.spage9891-
dc.identifier.epage9895-
dc.identifier.eissn1932-7455-
dc.identifier.isiWOS:000257155200051-
dc.identifier.issnl1932-7447-

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