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Polymer Functionalized Carbon nanotubes for sensor application

Published online by Cambridge University Press:  01 February 2011

Narasimha Harindra Vedala ,
Young C. Choi ,
X. Y. Zhou ,
Gene Kim  and
WonBong Choi
Narasimha Harindra Vedala
Affiliation:
Mechanical and Materials Engineering Department, Florida International University, Fort Lauderdale, FL 33322, U.S.A.
Young C. Choi
Affiliation:
Mechanical and Materials Engineering Department, Florida International University, Fort Lauderdale, FL 33322, U.S.A.
X. Y. Zhou
Affiliation:
Hemispheric Center for Environmental Technology, Florida International University, Miami, FL 33174, U.S.A.
Gene Kim
Affiliation:
Motorola Inc, 8000 W. Sunrise Blvd, Fort Lauderdale, FL 33322, U.S.A.
WonBong Choi
Affiliation:
Mechanical and Materials Engineering Department, Florida International University, Fort Lauderdale, FL 33322, U.S.A.
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Abstract

Surface modification of carbon nanotubes with polyvinyl alcohol (PVOH) showed detection for humidity variation implying a possible application as a nanoscale humidity sensor. Wettability studies on single-wall, Y junction single wall and multiwall carbon nanotubes revealed that these nanotubes tend to become highly hydrophilic surfaces by this functionalisation. From the raman analysis it was determined that the majority of the nanotubes in our Y-junction single wall nanotubes were semiconducting in nature. The conductivity studies revealed that the Y junction nanotubes with PVOH functionalisation show large change in conductivity for varying relative humidity (RH). We propose a possible charge transport mechanism in these functionalized nanotubes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 858: Symposium HH – Functional Carbon Nanotubes , 2004 , HH13.22
Copyright
Copyright © Materials Research Society 2005

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References

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