Understanding the effects of dielectric medium, substrate, and depth on electric fields and SERS of quasi-3D plasmonic nanostructures

0367802 - ÚFE 2012 RIV US eng J - Článek v odborném periodiku
Xu, J. - Kvasnička, Pavel - Idso, M. - Jordan, W. R. - Gong, H. - Homola, Jiří - Yu, Q.
Understanding the effects of dielectric medium, substrate, and depth on electric fields and SERS of quasi-3D plasmonic nanostructures.
Optics Express. Roč. 19, č. 21 (2011), s. 20493-20505. ISSN 1094-4087
Grant CEP: GA AV ČR KAN200670701
Výzkumný záměr: CEZ:AV0Z20670512
Klíčová slova: localized surface plasmon * surface enhanced raman scattering * finite differences-time domain
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika
Impakt faktor: 3.587, rok: 2011

Quasi-3D plasmonic nanostructures consist of periodic arrays of verticaly separated layers of gold nanodisks and nanoholes in thin film. Influence of inter-layer depth, substrate and spacer material on electrical field distribution and SERS was investiagted both theoretically and experimentally. Oscillations of field strength and SERS with depth were found and shown to be related to Fabry-Perot interference between the metal layers.
Trvalý link: http://hdl.handle.net/11104/0202350