Kumari, Gayatri ; Narayana, Chandrabhas (2012) New nano architecture for SERS applications The Journal of Physical Chemistry Letters, 3 (9). pp. 1130-1135. ISSN 1948-7185
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Official URL: https://pubs.acs.org/doi/abs/10.1021/jz3001344
Related URL: http://dx.doi.org/10.1021/jz3001344
Abstract
Silver silica gold sandwich nanoparticles were synthesized by a multistep seeded growth process and were characterized by UV–vis spectroscopy, transmission electron microscopy and X-ray diffraction. Gold islands allow passage of light through the crevices into the silica layer, and the silver core–silica shell behaves like a mirror, thus reflecting the light incident on it. These structures facilitate light amplification due to mixing of light waves from the multiple reflections. Sandwich nanoparticles show SERS enhancement of ∼106. This enhancement factor is 6-fold larger in magnitude than that of similar nanoparticles without the silver core under identical experimental conditions.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| Keywords: | Core Shell; Plasmons; Sandwich Nanoparticles; SERS |
| ID Code: | 113608 |
| Deposited On: | 30 Apr 2018 11:49 |
| Last Modified: | 30 Apr 2018 11:49 |
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