Local Dielectric Spectroscopy of Nanocomposite Materials Interfaces

Autor:	Labardi, Massimiliano, Prevosto, Daniele, Nguyen, Kim Hung, Capaccioli, Simone, Lucchesi, Mauro, Rolla, Pierangelo
Rok vydání:	2009
Předmět:	Condensed Matter - Soft Condensed Matter
Druh dokumentu:	Working Paper
DOI:	10.1116/1.3368597
Popis:	Local dielectric spectroscopy is performed to study how relaxation dynamics of a poly-vinyl-acetate ultra-thin film is influenced by inorganic nano-inclusions 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 to nanostructures with nanometer scale resolution. Comment: 21 pages, 4 figures, 1 table
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0911.1655 Zobrazit plný text záznamu View this record from Arxiv