Local dielectric spectroscopy of nanocomposite materials interfaces

Massimiliano Labardi, Daniele Prevosto, Kim Hung Nguyen, Simone Capaccioli, Mauro Lucchesi, Pierangelo Rolla

    Research output: Contribution to journalArticle

    34 Citations (Scopus)

    Abstract

    Local dielectric spectroscopy is performed to study how relaxation dynamics of a polyvinyl-acetate ultrathin film is influenced by inorganic nanoinclusions of a layered silicate (montmorillonite). Dielectric-loss spectra are measured by electrostatic-force microscopy in the frequency-modulation mode in ambient air. Spectral changes in both shape and relaxation time are evidenced across the boundary between pure polymer and montmorillonite sheets. Dielectric-loss imaging is also performed, evidencing spatial variations of dielectric properties near nanostructures with nanometer-scale resolution.

    Original languageEnglish
    Pages (from-to)C4D11-C4D17
    JournalJournal of Vacuum Science and Technology B:Nanotechnology and Microelectronics
    Volume28
    Issue number3
    DOIs
    Publication statusPublished - 2010 May

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Instrumentation
    • Process Chemistry and Technology
    • Surfaces, Coatings and Films
    • Electrical and Electronic Engineering
    • Materials Chemistry

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