Core-shell nanoparticles and enhanced polarization in polymer based nanocomposite dielectrics.
We present a detailed study of the evolution and nature of metallic core-oxide shell particles and the role of nanostructure in the physics of enhanced polarization in polymer-nanocomposite (PNC) based dielectrics. Nylon-6 based PNCs consisting of aluminium (core)-aluminium oxide (shell) nanoparticles were fabricated by a vacuum deposition technique. Their resulting high polarizability was closely related to the formation and chemistry of the core-shell structure that was revealed by transmission electron microscopy to comprise a highly-defective, strained and non-stoichiometric semi-crystalline/amorphous Al-oxide shell.
Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK.
Amoghavarsha
A
Mahadevegowda
Neil P
NP
Young
Patrick S
PS
Grant