Surface Plasmons and Surface Enhanced Raman Spectra of Aggregated and Alloyed Gold-Silver Nanoparticles
Joint Authors
Source
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-07-01
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
Effects of size, morphology, and composition of gold and silver nanoparticles on surface plasmon resonance (SPR) and surface enhanced Raman spectroscopy (SERS) are studied with the purpose of optimizing SERS substrates.
Various gold and silver films made by evaporation and subsequent annealing give different morphologies and compositions of nanoparticles and thus different position of the SPR peak.
SERS measurements of 4-mercaptobenzoic acid obtained from these films reveal that the proximity of the SPR peak to the exciting laser wavelength is not the only factor leading to the highest Raman enhancement.
Silver nanoparticles evaporated on top of larger gold nanoparticles show higher SERS than gold-silver alloyed nanoparticles, in spite of the fact that the SPR peak of alloyed nanoparticles is narrower and closer to the excitation wavelength.
The highest Raman enhancement was obtained for substrates with a two-peak particle size distribution for excitation wavelengths close to the SPR.
American Psychological Association (APA)
Fleger, Y.& Rosenbluh, M.. 2009. Surface Plasmons and Surface Enhanced Raman Spectra of Aggregated and Alloyed Gold-Silver Nanoparticles. Research Letters in Optics،Vol. 2009, no. 2009, pp.1-5.
https://search.emarefa.net/detail/BIM-474569
Modern Language Association (MLA)
Fleger, Y.& Rosenbluh, M.. Surface Plasmons and Surface Enhanced Raman Spectra of Aggregated and Alloyed Gold-Silver Nanoparticles. Research Letters in Optics No. 2009 (2009), pp.1-5.
https://search.emarefa.net/detail/BIM-474569
American Medical Association (AMA)
Fleger, Y.& Rosenbluh, M.. Surface Plasmons and Surface Enhanced Raman Spectra of Aggregated and Alloyed Gold-Silver Nanoparticles. Research Letters in Optics. 2009. Vol. 2009, no. 2009, pp.1-5.
https://search.emarefa.net/detail/BIM-474569
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-474569