English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/101661
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Plasmonics and single-molecule detection in evaporated silver-island films

AutorRodríguez-Oliveros, Rogelio; Albella, Pablo ; Sánchez-Gil, José A. ; Aroca, Ricardo F.
Palabras claveHotspots
Near field
Surface-enhanced Raman scattering
Fecha de publicación2012
CitaciónAnnalen der Physik 524(11): 697-704 (2012)
ResumenThe plasmonic origin of surface-enhanced Raman scattering (SERS) leads to the concept of hotspots and plasmon coupling that can be realized in the interstitial regions, or on specially engineered, silver and gold nanostructures. It is also possible to achieve spatial locations of high local field or hotspots on silver-island films (SIF) allowing single-molecule detection (SMD). When a single monomolecular layer coating the SIFs contains dye molecules dispersed in it, single-molecule impurities, (with an average of one hundred dye molecules in 1 µm2, which is the field of view of the micro-Raman system), SMD is observed as a rare statistical event. Here, the SMD results for silver-island films are presented, with the same nominal mass thickness, but differing in the localized surface plasmon resonance that is a function of the temperature of substrate during deposition. A blue-shifted plasmon can be seen as a decrease in plasmon coupling for deposition at higher temperature. A simple two-particle model for localized plasmon resonance coupling calculations, including the shape and substrate effects seems to explain the trend of observations.
Identificadoresdoi: 10.1002/andp.201200149
issn: 0003-3804
e-issn: 1521-3889
Aparece en las colecciones: (CFMAC-IEM) Artículos
(CFM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.