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Understanding the sensor response of metal-decorated carbon nanotubes

Kauffman, DR and Sorescu, DC and Schofield, DP and Allen, BL and Jordan, KD and Star, A (2010) Understanding the sensor response of metal-decorated carbon nanotubes. Nano Letters, 10 (3). 958 - 963. ISSN 1530-6984

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Abstract

We have explored the room temperature response of metal nanoparticle decorated single-walled carbon nanotubes (NPSWNTs) using a combination of electrical transport, optical spectroscopy, and electronic structure calculations. We have found that upon the electrochemical growth of Au NPs on SWNTs, there is a transfer of electron density from the SWNT to the NP species, and that adsorption of CO molecules on the NP surface is accompanied by transfer of electronic density back into the SWNT. Moreover, the electronic structure calculations indicate dramatic variations in the charge density at the NP-SWNT interface, which supports our previous observation that interfacial potential barriers dominate the electrical behavior of NP-SWNT systems. © 2010 American Chemical Society.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Kauffman, DR
Sorescu, DC
Schofield, DP
Allen, BL
Jordan, KDjordan@pitt.eduJORDAN
Star, Aastar@pitt.eduASTAR
Date: 10 March 2010
Date Type: Publication
Journal or Publication Title: Nano Letters
Volume: 10
Number: 3
Page Range: 958 - 963
DOI or Unique Handle: 10.1021/nl903888c
Schools and Programs: Dietrich School of Arts and Sciences > Chemistry
Refereed: Yes
ISSN: 1530-6984
MeSH Headings: Computer Simulation; Conductometry--instrumentation; Crystallization--methods; Equipment Design; Equipment Failure Analysis; Gold--chemistry; Materials Testing; Models, Theoretical; Nanotechnology--methods; Nanotubes, Carbon--chemistry; Nanotubes, Carbon--ultrastructure; Particle Size; Transducers
PubMed ID: 20155969
Date Deposited: 12 Nov 2012 14:56
Last Modified: 02 Feb 2019 15:56
URI: http://d-scholarship.pitt.edu/id/eprint/16166

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