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Applied Physics Letters / Volume 97 / Issue 8 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 97, 083107 (2010); http://dx.doi.org/10.1063/1.3483128 (3 pages)

DNA-decorated graphene chemical sensors

Ye Lu, B. R. Goldsmith, N. J. Kybert, and A. T. C. Johnson

Department of Physics and Astronomy, University of Pennsylvania, 209 S. 33rd St., Philadelphia, Pennsylvania 19104-6396, USA

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(Received 21 May 2010; accepted 28 July 2010; published online 26 August 2010)

Graphene is a two-dimensional material with exceptional electronic properties and enormous potential for applications. Graphene’s promise as a chemical sensor material has been noted but there has been little work on practical chemical sensing using graphene, and in particular, how chemical functionalization may be used to sensitize graphene to chemical vapors. Here we show one route towards improving the ability of graphene to work as a chemical sensor by using single stranded DNA as a sensitizing agent. The resulting devices show fast response times, complete and rapid recovery to baseline at room temperature, and discrimination between several similar vapor analytes.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

chemical sensors, DNA, graphene

PACS

  • 07.07.Df

    Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing

  • 81.05.ue

    Graphene

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3483128

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    J. P. Novak, E. S. Snow, E. J. Houser, D. Park, J. L. Stepnowski, and R. A. McGill, Appl. Phys. Lett. 83, 4026 (2003)APPLAB000083000019004026000001.


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