Title :
Tunable optical excitations in gold nanorings
Author :
Aizpurua, J. ; Bryant, G.W. ; Hanarp, P. ; Sutherland, D.S. ; Kall, M. ; Garcia de Abajo, F.J.
Author_Institution :
Nat. Inst. of Stand. & Technol., Gaithersburg, MD, USA
Abstract :
The optical response of gold nanorings is measured and analyzed theoretically. Compared to gold disks, nanorings exhibit a red-shifted surface plasmon that can be tuned by varying the ratio between ring thickness arid radius.
Keywords :
gold; nanostructured materials; optical tuning; red shift; surface plasmons; Au; gold nanorings; red-shift; surface plasmon; tunable optical excitations; Dielectrics; Electromagnetic coupling; Electromagnetic fields; Geometrical optics; Gold; Optical scattering; Optical sensors; Optical surface waves; Plasmons; Surface morphology;
Conference_Titel :
Quantum Electronics and Laser Science, 2003. QELS. Postconference Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-749-0
DOI :
10.1109/QELS.2003.238160
