Metallic and Dielectric Nanospheres

This book reports on optoelectronic behavior and characteristics of metallic and dielectric nanospheres which are specially designed at nanoscale for optical frequencies. The absorption scattering and extinction efficiencies would indicate the suitable material for the device. The metal nanoparticle possesses the inherent surface plasmonic properties which help in enhancing the field of nanoptenna. When the incident light is interacted with the nanoparticle it is either absorbed (refracted) or scattered (reflected) by the metallic nanostructure device. But metallic nanodevices suffer from losses at optical frequencies. So dielectric material silicon is used to achieve high directivity with vanishing losses.