期刊
SMALL
卷 9, 期 4, 页码 531-537出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201201286
关键词
localized surface plasmons; surface enhanced raman scattering; double resonances; Au-SiO2-Au; tandem nanocones
类别
资金
- DPT-HAMIT
- ESF-EPI-GRAT
- NATO-SET-181
- TUBITAK [107A004, 109A015, 109E301]
- Turkish Academy of Sciences
A highly tunable design for obtaining double resonance substrates to be used in surface-enhanced Raman spectroscopy is proposed. Tandem truncated nanocones composed of Au-SiO2-Au layers are designed, simulated and fabricated to obtain resonances at laser excitation and Stokes frequencies. Surface-enhanced Raman scattering experiments are conducted to compare the enhancements obtained from double resonance substrates to those obtained from single resonance gold truncated nanocones. The best enhancement factor obtained using the new design is 3.86 x 107. The resultant tandem structures are named after Fairy Chimneys rock formation in Cappadocia, Turkey.
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