Surface plasmon polaritons 14 Photons 12 Plasmons 12 Electromagnetic wave polarization 10 Metamaterials 10 Phonons 10 Quantum theory 10 Surface plasmon resonance 10 Solids 8 Diffraction gratings 6 Refractive index 6 Diffraction 4 Electromagnetic wave transmission 4 Extraordinary transmission 4 Light 4 Metallic gratings 4 Negative refractions 4 Negative refractive index 4 Plasmonics 4 Surface polaritons 4 Surface waves 4 Surfaces 4 Absorption 2 Absorption and scatterings 2 Absorption peaks 2 Attenuated total reflections 2 Backward propagation 2 Backward-wave propagation 2 Boundary conditions 2 Cavity resonators 2