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基于双金属结构的拉曼基底的仿真研究(
)
《南京师范大学学报》（自然科学版）[ISSN:1001-4616/CN:32-1239/N]
- 卷:
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第39卷
- 期数:
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2016年01期
- 页码:
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53
- 栏目:
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物理学
- 出版日期:
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2016-03-31
文章信息/Info
- Title:
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Numerical Study on Surface Enhanced Raman ScatteringSubstrates Composed of Two Metals
- 作者:
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姚 洁; 毛 洪
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南京师范大学物理科学与技术学院，江苏 南京 210023
- Author(s):
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Yao Jie; Mao Hong
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School of Physics and Technology，Nanjing Normal University，Nanjing 210023，China
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- 关键词:
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- Keywords:
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- 分类号:
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O436.2
- 文献标志码:
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A
- 摘要:
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本文通过数值模拟研究了金-介质-银结构的双金属拉曼基底.与金构成的单金属拉曼基底相比，拉曼增强因子提高了89%.与以银为基础的单金属基底相比，该基底不仅可以避免银氧化带来的不利影响，而且可以利用金在可见光波段的损耗，将高阶共振造成的场增强抑制为原来的60%.这一研究对于研制选择性高、可靠性强的新型拉曼基底具有参考价值.
- Abstract:
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A dual-metal substrate of gold-dielectric-silver for Surface Enhanced Raman Scattering（SRES）is studied through numerical simulations. The calculations show that the enhancement of SERS can be improved by 89% compared with the single-metal substrate based on gold. Compared with the single-metal substrate of silver，this substrate is immune to oxygenations，and the local field enhancement from high order resonance is decreased to 60% due to the loss of gold at the visible wave range. These results will be helpful for the study on SERS substrates of high selectivity and reliability.
更新日期/Last Update:
2016-03-30