Metallic rings, or plasmonic ring cavities (PRCs), could be good alternatives to widely used “dimer” or “bowtie” nanoantennas as the light emitting sources in all-optical chip circuits. So say researchers at Imperial College London in the UK who have successfully coupled PRCs to large numbers of semiconducting quantum dots to make hybrid structures that consistently and reliably radiate light….
http://nanotechweb.org/cws/article/tech/60026
