期刊
JOURNAL OF RAMAN SPECTROSCOPY
卷 42, 期 6, 页码 1263-1266出版社
WILEY
DOI: 10.1002/jrs.2853
关键词
localized surface plasmon resonance; bowtie nanoring; electric field enhancement; finite-difference time-domain; surface-enhanced Raman scattering
类别
资金
- National Natural Science Foundation of China [60876049, 60906028, 60636030]
A metallic bowtie nanoring array is designed to gain high sensitive and reproducible substrate for surface-enhanced Raman scattering (SERS) spectroscopy. The localized surface plasmon resonance (LSPR), the electric field enhancement factors (EFs) and the electric field distribution of the bowtie and bowtie nanoring array are numerically investigated by means of the finite-difference time domain (FDTD) method. After the optimization of the particle size and the array period, the maximum electromagnetic field EF approaches 153, and the corresponding SERS electromagnetic enhancement factor (EMEF) reaches 5.4 x 10(8). This highly sensitive and reproducible substrate can be a good candidate for SERS applications. Copyright (C) 2011 John Wiley & Sons, Ltd.
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