Aspect ratio dependence on surface enhanced Raman scattering using silver and gold nanorod substrates
| Autor: | Catherine J. Murphy, Nikhil R. Jana, Latha A. Gearheart, Christopher J. Orendorff |
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| Rok vydání: | 2006 |
| Předmět: |
Silver
Chemistry Surface Properties technology industry and agriculture Analytical chemistry General Physics and Astronomy Substrate (electronics) Surface-enhanced Raman spectroscopy Spectrum Analysis Raman Aspect ratio (image) Solutions symbols.namesake Microscopy Electron Transmission symbols Nanotechnology Nanorod Colloids Gold Physical and Theoretical Chemistry Particle Size Plasmon Raman scattering Excitation Localized surface plasmon |
| Zdroj: | Physical chemistry chemical physics : PCCP. 8(1) |
| ISSN: | 1463-9076 |
| Popis: | Silver and gold nanorods with aspect ratios from 1 to 16 have been used as substrates for surface enhanced Raman spectroscopy (SERS) in colloidal solution. The nanorod aspect ratio is varied to give different degrees of overlap between the nanorod longitudinal plasmon band and excitation source in order to determine its effect on overall surface enhancement. Results suggest that enhancement factors are a factor of 10-10(2) greater for substrates that have plasmon band overlap with the excitation source than for substrates whose plasmon bands do not. |
| Databáze: | OpenAIRE |
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