Plasmonic black gold by adiabatic nanofocusing and absorption of light in ultra-sharp convex grooves
Thomas Søndergaard,1 Sergey M. Novikov,2 Tobias Holmgaard,1 René L. Eriksen,2 Jonas Beermann,2 Zhanghua Han,2 Kjeld Pedersen1 & Sergey I. Bozhevolnyi2
Nature Communications Volume: 3, Article number: 969