Please use this identifier to cite or link to this item:
https://doi.org/10.1021/ja805090z
| DC Field | Value | |
|---|---|---|
| dc.title | Solution-gated epitaxial graphene as pH sensor | |
| dc.contributor.author | Ang, P.K. | |
| dc.contributor.author | Chen, W. | |
| dc.contributor.author | Wee, A.T.S. | |
| dc.contributor.author | Kian, P.L. | |
| dc.date.accessioned | 2014-10-16T08:40:42Z | |
| dc.date.available | 2014-10-16T08:40:42Z | |
| dc.date.issued | 2008-11-05 | |
| dc.identifier.citation | Ang, P.K., Chen, W., Wee, A.T.S., Kian, P.L. (2008-11-05). Solution-gated epitaxial graphene as pH sensor. Journal of the American Chemical Society 130 (44) : 14392-14393. ScholarBank@NUS Repository. https://doi.org/10.1021/ja805090z | |
| dc.identifier.issn | 00027863 | |
| dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/94842 | |
| dc.description.abstract | A solution-gate field effect transistor (SGFET) has been fabricated on few-layer graphene (FLG). The ideally polarizable graphene/aqueous electrolyte interface allows the capacitive charging of the surface by hydroxyl (OH-) and hydroxonium ions (H3O+). The conductivity versus gate potential curve exhibits "V" shaped ambipolar transfer characteristics of graphene, with hole and electron mobilities of 3600 cm2/Vs and 2100 cm2/Vs, respectively. The shift of the negative gate potential with pH shows a supra-Nernstian response of 99 meV/pH. Our work points to the potential application of graphene in ultrafast and ultralow noise chemical or biological sensors. Copyright © 2008 American Chemical Society.. | |
| dc.description.uri | http://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1021/ja805090z | |
| dc.source | Scopus | |
| dc.type | Article | |
| dc.contributor.department | CHEMISTRY | |
| dc.contributor.department | PHYSICS | |
| dc.description.doi | 10.1021/ja805090z | |
| dc.description.sourcetitle | Journal of the American Chemical Society | |
| dc.description.volume | 130 | |
| dc.description.issue | 44 | |
| dc.description.page | 14392-14393 | |
| dc.description.coden | JACSA | |
| dc.identifier.isiut | 000260533400020 | |
| Appears in Collections: | Staff Publications | |
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