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Conducting Polymer nanoComposites (CPC): Nanocharacterisation of layer by layer sprayed PMMA-CNT vapour sensors by Atomic force Microscopy in current Sensing Mode (CS-AFM)

Published online by Cambridge University Press:  01 February 2011

Bijandra Kumar ,
Mickaël Castro ,
Jianbo Lu  and
Jean-François Feller
Bijandra Kumar
Affiliation:
[email protected], Euorpean University of Brittany, LIMATB, Lorient, France
Mickaël Castro
Affiliation:
[email protected], European University of Brittany, LIMATB, rue saint maude, Lorient, 56321, France, (+33) 2 97 87 45 80, (+33) 2 97 87 45 88
Jianbo Lu
Affiliation:
[email protected], Euorpean University of Brittany, LIMATB, Lorient, France
Jean-François Feller
Affiliation:
[email protected], European University of Brittany, LIMATB, Lorient, France
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Abstract

Organic vapour sensors based on poly (methylmethacrylate)-multi-wall carbon nanotubes (PMMA-CNT) conductive polymer nanocomposite (CPC) were developed via layer by layer technique by spray deposition. CPC Sensors were exposed to three different classes of solvents (chloroform, methanol and water) and their chemo-electrical properties were followed as a function of CNTcontent in dynamic mode. Detection time was found to be shorter than that necessary for full recovery of initial state. CNT real three dimensional network has been visualized by Atomic force microscopy in a field assisted intermittent contact mode. More interestingly real conductive network system and electrical ability of CPC have been explored by current-sensing atomic force microscopy (CS-AFM). Realistic effect of voltage on electrical conductivity has been found linear.

Keywords

nanostructureelectrical propertiesscanning probe microscopy (SPM)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1143: Symposium KK – Transport Properties in Polymer Nanocomposites , 2008 , 1143-KK02-06
Copyright
Copyright © Materials Research Society 2009

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