Article: Electronic sensitivity of carbon nanotubes to internal water wetting
| Title | Electronic sensitivity of carbon nanotubes to internal water wetting |
|---|---|
| Authors | Cao, D3 Pang, P3 He, J3 Luo, T3 Park, JH2 Krstic, P2 Nuckolls, C1 Tang, J1 Lindsay, S3 |
| Keywords | Biosensor Carbon Nanotube Nanoconfinement Nanofluidics Nanopore Water In Nanoscale Channels |
| Issue Date | 2011 |
| Publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html |
| Citation | Acs Nano, 2011, v. 5 n. 4, p. 3113-3119 [How to Cite?] DOI: http://dx.doi.org/10.1021/nn200251z |
| Abstract | We 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. |
| ISSN | 1936-0851 2011 Impact Factor: 10.774 2011 SCImago Journal Rankings: 1.365 |
| DOI | http://dx.doi.org/10.1021/nn200251z |
| References | References in Scopus |
| dc.contributor.author | Cao, D |
|---|---|
| dc.contributor.author | Pang, P |
| dc.contributor.author | He, J |
| dc.contributor.author | Luo, T |
| dc.contributor.author | Park, JH |
| dc.contributor.author | Krstic, P |
| dc.contributor.author | Nuckolls, C |
| dc.contributor.author | Tang, J |
| dc.contributor.author | Lindsay, S |
| dc.date.accessioned | 2012-10-25T04:53:38Z |
| dc.date.available | 2012-10-25T04:53:38Z |
| dc.date.issued | 2011 |
| dc.description.abstract | We 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.nature | Link_to_subscribed_fulltext |
| dc.identifier.citation | Acs Nano, 2011, v. 5 n. 4, p. 3113-3119 [How to Cite?] DOI: http://dx.doi.org/10.1021/nn200251z |
| dc.identifier.doi | http://dx.doi.org/10.1021/nn200251z |
| dc.identifier.epage | 3119 |
| dc.identifier.issn | 1936-0851 2011 Impact Factor: 10.774 2011 SCImago Journal Rankings: 1.365 |
| dc.identifier.issue | 4 |
| dc.identifier.scopus | eid_2-s2.0-79955409912 |
| dc.identifier.spage | 3113 |
| dc.identifier.uri | http://hdl.handle.net/10722/169606 |
| dc.identifier.volume | 5 |
| dc.language | eng |
| dc.publisher | American Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/ancac3/index.html |
| dc.publisher.place | United States |
| dc.relation.ispartof | ACS Nano |
| dc.relation.references | References in Scopus |
| dc.subject | Biosensor |
| dc.subject | Carbon Nanotube |
| dc.subject | Nanoconfinement |
| dc.subject | Nanofluidics |
| dc.subject | Nanopore |
| dc.subject | Water In Nanoscale Channels |
| dc.title | Electronic sensitivity of carbon nanotubes to internal water wetting |
| dc.type | Article |
Author Affiliations
- Columbia University in the City of New York
- Oak Ridge National Laboratory
- Arizona State University