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Scaffolding carbon nanotubes into single-molecule circuitry

Published online by Cambridge University Press:  31 January 2011

Brett R. Goldsmith ,
John G. Coroneus ,
Jorge A. Lamboy ,
Gregory A. Weiss  and
Philip G. Collins
Brett R. Goldsmith
Affiliation:
Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697
John G. Coroneus
Affiliation:
Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, California 92697
Jorge A. Lamboy
Affiliation:
Department Chemistry, University of California, Irvine, Irvine, California 92697
Gregory A. Weiss
Affiliation:
Department of Molecular Biology and Biochemistry and Department of Chemistry, University of California, Irvine, Irvine, California 92697
Philip G. Collins*
Affiliation:
Department of Physics and Astronomy, University of California, Irvine, Irvine, California 92697
*
a)Address all correspondence to this author. e-mail: collinsp@uci.edu
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Abstract

While nanowires and nanotubes have been shown to be electrically sensitive to various chemicals, not enough is known about the underlying mechanisms to control or tailor this sensitivity. By limiting the chemically sensitive region of a nanostructure to a single binding site, single molecule precision can be obtained to study the chemoresistive response. We have developed techniques using single-walled- carbon-nanotube (SWCNT) circuits that enable single-site experimentation and illuminate the dynamics of chemical interactions. Discrete changes in the circuit conductance reveal chemical processes happening in real-time and allow SWCNT sidewalls to be deterministically broken, reformed, and conjugated to target species.

Keywords

NanostructureElectrical propertiesSensor
Type
Outstanding Symposium Papers
Information
Journal of Materials Research , Volume 23 , Issue 5 , May 2008 , pp. 1197 - 1201
Copyright
Copyright © Materials Research Society 2008

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