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Article: Electronic sensitivity of carbon nanotubes to internal water wetting
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TitleElectronic sensitivity of carbon nanotubes to internal water wetting
 
AuthorsCao, D3
Pang, P3
He, J3
Luo, T3
Park, JH2
Krstic, P2
Nuckolls, C1
Tang, J1
Lindsay, S3
 
KeywordsBiosensor
Carbon Nanotube
Nanoconfinement
Nanofluidics
Nanopore
Water In Nanoscale Channels
 
Issue Date2011
 
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html
 
CitationAcs Nano, 2011, v. 5 n. 4, p. 3113-3119 [How to Cite?]
DOI: http://dx.doi.org/10.1021/nn200251z
 
AbstractWe have constructed devices in which the interior of a single-walled carbon nanotube (SWCNT) field-effect transistor acts as a nanofluidic channel that connects two fluid reservoirs, permitting measurement of the electronic properties of the SWCNT as it is wetted by an analyte. Wetting of the inside of the SWCNT by water turns the transistor on, while wetting of the outside has little effect. These observations are consistent with theoretical simulations that show that internal water both generates a large dipole electric field, causing charge polarization of the tube and metal electrodes, and shifts the valence band of the SWCNT, while external water has little effect. This finding may provide a new method to investigate water behavior at nanoscale. This also opens a new avenue for building sensors in which the SWCNT simultaneously functions as a concentrator, nanopore, and extremely sensitive electronic detector, exploiting the enhanced sensitivity of the interior surface. © 2011 American Chemical Society.
 
ISSN1936-0851
2012 Impact Factor: 12.062
2012 SCImago Journal Rankings: 6.029
 
DOIhttp://dx.doi.org/10.1021/nn200251z
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorCao, D
 
dc.contributor.authorPang, P
 
dc.contributor.authorHe, J
 
dc.contributor.authorLuo, T
 
dc.contributor.authorPark, JH
 
dc.contributor.authorKrstic, P
 
dc.contributor.authorNuckolls, C
 
dc.contributor.authorTang, J
 
dc.contributor.authorLindsay, S
 
dc.date.accessioned2012-10-25T04:53:38Z
 
dc.date.available2012-10-25T04:53:38Z
 
dc.date.issued2011
 
dc.description.abstractWe have constructed devices in which the interior of a single-walled carbon nanotube (SWCNT) field-effect transistor acts as a nanofluidic channel that connects two fluid reservoirs, permitting measurement of the electronic properties of the SWCNT as it is wetted by an analyte. Wetting of the inside of the SWCNT by water turns the transistor on, while wetting of the outside has little effect. These observations are consistent with theoretical simulations that show that internal water both generates a large dipole electric field, causing charge polarization of the tube and metal electrodes, and shifts the valence band of the SWCNT, while external water has little effect. This finding may provide a new method to investigate water behavior at nanoscale. This also opens a new avenue for building sensors in which the SWCNT simultaneously functions as a concentrator, nanopore, and extremely sensitive electronic detector, exploiting the enhanced sensitivity of the interior surface. © 2011 American Chemical Society.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationAcs Nano, 2011, v. 5 n. 4, p. 3113-3119 [How to Cite?]
DOI: http://dx.doi.org/10.1021/nn200251z
 
dc.identifier.doihttp://dx.doi.org/10.1021/nn200251z
 
dc.identifier.epage3119
 
dc.identifier.issn1936-0851
2012 Impact Factor: 12.062
2012 SCImago Journal Rankings: 6.029
 
dc.identifier.issue4
 
dc.identifier.pmid21452854
 
dc.identifier.scopuseid_2-s2.0-79955409912
 
dc.identifier.spage3113
 
dc.identifier.urihttp://hdl.handle.net/10722/169606
 
dc.identifier.volume5
 
dc.languageeng
 
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html
 
dc.publisher.placeUnited States
 
dc.relation.ispartofACS Nano
 
dc.relation.referencesReferences in Scopus
 
dc.subjectBiosensor
 
dc.subjectCarbon Nanotube
 
dc.subjectNanoconfinement
 
dc.subjectNanofluidics
 
dc.subjectNanopore
 
dc.subjectWater In Nanoscale Channels
 
dc.titleElectronic sensitivity of carbon nanotubes to internal water wetting
 
dc.typeArticle
 
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<contributor.author>Park, JH</contributor.author>
<contributor.author>Krstic, P</contributor.author>
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Author Affiliations
  1. Columbia University in the City of New York
  2. Oak Ridge National Laboratory
  3. Arizona State University