Enhanced optical nonlinearities in resonant structures for on-chip scale integration    Silicon-based optical devices with vertical gratings   Fourier Plasmonics: Manipulating In-Plane Surface Plasmon Polariton Waves   Inhomogenous Dielectric Metamaterials with Space-Variant Polarizability   Surface plasmon polariton mode excitation and its application in biosensing in a two-dimensional metallic nanohole array