Visualization of single-wall carbon nanotube (SWNT) networks in conductive polystyrene nanocomposites by charge contrast imaging

Joachim Loos, Alexander Alexeev, Nadia Grossiord, Cor E. Koning, Oren Regev

    Research output: Contribution to journalArticlepeer-review

    151 Citations (Scopus)

    Abstract

    The morphology of conductive nanocomposites consisting of low concentration of single-wall carbon nanotubes (SWNT) and polystyrene (PS) has been studied using atomic force microscopy (AFM), transmission electron microscopy (TEM) and, in particular, scanning electron microscopy (SEM). Application of charge contrast imaging in SEM allows visualization of the overall SWNT dispersion within the polymer matrix as well as the identification of individual or bundled SWNTs at high resolution. The contrast mechanism involved will be discussed. In conductive nanocomposites the SWNTs are homogeneously dispersed within the polymer matrix and form a network. Beside fairly straight SWNTs, strongly bended SWNTs have been observed. However, for samples with SWNT concentrations below the percolation threshold, the common overall charging behavior of an insulating material is observed preventing the detailed morphological investigation of the sample.

    Original languageEnglish
    Pages (from-to)160-167
    Number of pages8
    JournalUltramicroscopy
    Volume104
    Issue number2
    DOIs
    Publication statusPublished - Sept 2005

    Keywords

    • Charge contrast imaging
    • Conductive nanocomposites
    • Scanning electron microscopy (SEM)
    • Single-wall carbon nanotubes

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Atomic and Molecular Physics, and Optics
    • Instrumentation

    Fingerprint

    Dive into the research topics of 'Visualization of single-wall carbon nanotube (SWNT) networks in conductive polystyrene nanocomposites by charge contrast imaging'. Together they form a unique fingerprint.

    Cite this