Authors: K. Kempa
Addresses: Department of Physics, Boston College, Chestnut Hill, MA 02467, USA
Abstract: Nanocomposites are media made of nanoparticles embedded in a matrix. Depending on the nanoparticle types and shapes, nanocomposites can have different properties. I discuss here dielectric and magnetic composites at low, as well as, high frequencies. At low frequencies, dielectric and magnetic properties can be enhanced by using elongated nanoparticles. At high frequencies various photonic, plasmonic and polaritonic effects can occur in nanocomposites, in particular in those with periodic arrangement of nanoparticles. The negative refraction can be achieved in nanocomposites with simultaneously negative dielectric function and magnetic permeability.
Keywords: nanocomposites; dielectric function; permeability; nanoparticles; carbon nanotubes; antennas; coaxial transmission lines; nanotechnology; security; dielectric properties; magnetic properties; optical properties.
International Journal of Nanotechnology, 2007 Vol.4 No.3, pp.233 - 238
Published online: 01 May 2007 *Full-text access for editors Access for subscribers Purchase this article Comment on this article