Abstract Optical devices capable of suppressing diffraction nature light are great technological importance to many nanophotonic applications. One important technique achieve diffractionless optics is exploit field canalization effect. However, current platforms based on metamaterial structures typically suffer from strict loss-confinement trade-off, or lack dynamic reconfigurability over devic...

Preserve the shape of silver nanocrystals by decorating a shell or frame composed more corrosive resistant metal on their surfaces for applications in plasmonics, catalysis, and electronics.