Emission enhancement in dielectric nanocomposites

Spontaneous emission enhancement in metal–dielectric metamaterials

a St. Petersburg University of Information Technologies, Mechanics and Optics (ITMO), St. Petersburg 197101, Russia b St. Petersburg Academic University – Nanotechnology Research and Education Centre, St. Petersburg 194021, Russia c Ioffe Physical Technical Institute, St. Petersburg 194021, Russia d School of Electronic Engineering and Computer Science, Queen Mary University of London, London E...

Dielectric Properties of Graphite Nanocomposites

The Structural and Electron Field Emission Properties of Ion- Beam-Synthesised Metallic-Dielectric Nanocomposites

Metallic-dielectric nanocomposites, including Ag-SiO2, Co-SiO2 and WC-SiC, were synthesised on silicon substrates using ion implantation. The electron field emission (FE) properties of these nanocomposites were studied and correlated to their microstructure determined from the measurements of atomic force microscopy, Rutherford backscattering spectroscopy, x-ray photoelectron spectroscopy and t...

Dielectric Properties of PE/Clay Nanocomposites

Polyethylene/nanoclay specimens containing from 0 to 5% nanoclays were prepared from a commercially available premixed PE/nanoclay masterbatch containing 50%wt of nanoclay. The masterbatch was diluted to the desired concentration by adding PE along with various amounts of compatibilizer in order to achieve the best possible dispersion of the nanoclay platelets. The dielectric response of the co...

Magneto-dielectric properties of polymer– Fe3O4 nanocomposites

The aim of this research is to elucidate the size effect of magnetic nanoparticles on the resultant magneto-dielectric properties of polymer nanocomposites at radio frequencies. The block copolymer of [styrene-b-ethylene/butylene-b-styrene] (SEBS) was utilized as a matrix for the templating of magnetic nanoparticles. Surfactant-modified iron oxide (Fe3O4) nanoparticles of various sizes were suc...