ABSTRACT
This chapter is devoted to a few of the interesting effects that have drawn the attention of researchers in the past fifteen year. There are many counterintuitive findings that triggered a second look at some of the seemingly wellunderstood phenomena like imaging and diffraction. We focus on two main effects, namely, the perfect imaging and extraordinary transmission. Note that there have been many other interesting effects like invisibility cloaks, metasurfaces and Fano resonances in nanostructures. The research has been extended to quantum effects in metal-dielectric nanostructures, leading to the birth of nonlinear and quantum plasmonics. We do not cite references on any of these topics since a Google search will reveal the enormous progress that has been made in most of these areas.
