Characterization of multi-walled carbon nanotube-polymer nanocomposites by scanning spreading resistance microscopy

Tewfik Souier, Marco Stefancich, Matteo Chiesa

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Nanocomposites of aligned multi-walled carbon nanotubes (CNTs) embedded in a polymer matrix yield a unique combination of thermal and electrical properties and mechanical strength. These properties are intimately related to the composite nanostructure and to the growth and processing conditions. The alignment of the tubes, the filling fraction and the contact junction between the nanotubes are key parameters controlling the composite electrical conductivity. For this purpose, a full description of the composite nanostructure is required. Among the non-destructive scanning probe techniques, scanning spreading resistance microscopy is found to be a powerful technique in identifying the carbon nanotubes with true nanometer resolution, thus competing with SEM and TEM imaging. Additionally, the technique provides valuable information about the electrical conduction mechanism within the composite structure. Indeed, by using a controlled contact force and an appropriate model of conduction at the nanoscale, the tip-CNT contact resistance, the CNT intrinsic resistance and the CNT-epoxy-CNT resistance junction are evaluated. This latter is found to be the factor controlling the overall electrical conductivity of the composite.

Original languageEnglish
Article number405704
JournalNanotechnology
Volume23
Issue number40
DOIs
Publication statusPublished - Oct 12 2012

Fingerprint

Carbon Nanotubes
Carbon nanotubes
Nanocomposites
Microscopic examination
Polymers
Scanning
Composite materials
Nanostructures
Contact resistance
Composite structures
Polymer matrix
Nanotubes
Strength of materials
Electric properties
Thermodynamic properties
Transmission electron microscopy
Imaging techniques
Scanning electron microscopy
Processing

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Characterization of multi-walled carbon nanotube-polymer nanocomposites by scanning spreading resistance microscopy. / Souier, Tewfik; Stefancich, Marco; Chiesa, Matteo.

In: Nanotechnology, Vol. 23, No. 40, 405704, 12.10.2012.

Research output: Contribution to journalArticle

@article{34abca8850d54c6999b7f3dca9cf0247,
title = "Characterization of multi-walled carbon nanotube-polymer nanocomposites by scanning spreading resistance microscopy",
abstract = "Nanocomposites of aligned multi-walled carbon nanotubes (CNTs) embedded in a polymer matrix yield a unique combination of thermal and electrical properties and mechanical strength. These properties are intimately related to the composite nanostructure and to the growth and processing conditions. The alignment of the tubes, the filling fraction and the contact junction between the nanotubes are key parameters controlling the composite electrical conductivity. For this purpose, a full description of the composite nanostructure is required. Among the non-destructive scanning probe techniques, scanning spreading resistance microscopy is found to be a powerful technique in identifying the carbon nanotubes with true nanometer resolution, thus competing with SEM and TEM imaging. Additionally, the technique provides valuable information about the electrical conduction mechanism within the composite structure. Indeed, by using a controlled contact force and an appropriate model of conduction at the nanoscale, the tip-CNT contact resistance, the CNT intrinsic resistance and the CNT-epoxy-CNT resistance junction are evaluated. This latter is found to be the factor controlling the overall electrical conductivity of the composite.",
author = "Tewfik Souier and Marco Stefancich and Matteo Chiesa",
year = "2012",
month = "10",
day = "12",
doi = "10.1088/0957-4484/23/40/405704",
language = "English",
volume = "23",
journal = "Nanotechnology",
issn = "0957-4484",
publisher = "IOP Publishing Ltd.",
number = "40",

}

TY - JOUR

T1 - Characterization of multi-walled carbon nanotube-polymer nanocomposites by scanning spreading resistance microscopy

AU - Souier, Tewfik

AU - Stefancich, Marco

AU - Chiesa, Matteo

PY - 2012/10/12

Y1 - 2012/10/12

N2 - Nanocomposites of aligned multi-walled carbon nanotubes (CNTs) embedded in a polymer matrix yield a unique combination of thermal and electrical properties and mechanical strength. These properties are intimately related to the composite nanostructure and to the growth and processing conditions. The alignment of the tubes, the filling fraction and the contact junction between the nanotubes are key parameters controlling the composite electrical conductivity. For this purpose, a full description of the composite nanostructure is required. Among the non-destructive scanning probe techniques, scanning spreading resistance microscopy is found to be a powerful technique in identifying the carbon nanotubes with true nanometer resolution, thus competing with SEM and TEM imaging. Additionally, the technique provides valuable information about the electrical conduction mechanism within the composite structure. Indeed, by using a controlled contact force and an appropriate model of conduction at the nanoscale, the tip-CNT contact resistance, the CNT intrinsic resistance and the CNT-epoxy-CNT resistance junction are evaluated. This latter is found to be the factor controlling the overall electrical conductivity of the composite.

AB - Nanocomposites of aligned multi-walled carbon nanotubes (CNTs) embedded in a polymer matrix yield a unique combination of thermal and electrical properties and mechanical strength. These properties are intimately related to the composite nanostructure and to the growth and processing conditions. The alignment of the tubes, the filling fraction and the contact junction between the nanotubes are key parameters controlling the composite electrical conductivity. For this purpose, a full description of the composite nanostructure is required. Among the non-destructive scanning probe techniques, scanning spreading resistance microscopy is found to be a powerful technique in identifying the carbon nanotubes with true nanometer resolution, thus competing with SEM and TEM imaging. Additionally, the technique provides valuable information about the electrical conduction mechanism within the composite structure. Indeed, by using a controlled contact force and an appropriate model of conduction at the nanoscale, the tip-CNT contact resistance, the CNT intrinsic resistance and the CNT-epoxy-CNT resistance junction are evaluated. This latter is found to be the factor controlling the overall electrical conductivity of the composite.

UR - http://www.scopus.com/inward/record.url?scp=84866531917&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84866531917&partnerID=8YFLogxK

U2 - 10.1088/0957-4484/23/40/405704

DO - 10.1088/0957-4484/23/40/405704

M3 - Article

VL - 23

JO - Nanotechnology

JF - Nanotechnology

SN - 0957-4484

IS - 40

M1 - 405704

ER -