A new class of plasmonic crystals: the eigen modes, field enhancement, and applications

A new class of plasmonic crystals is introduced, which are composed of stacked complementary nano-structures of metal. The plasmonic crystals have composite eigen modes of enhanced rotatory electromagnetic components. The eigen modes emerge in the stacked complementary nano-structures with proper distance between the two complementary layers including metal. The potential in application as plasmonic polarizers of subwavelenth thickness is also discussed.