Aspect ratio dependence on surface enhanced Raman scattering using silver and gold nanorod substrates
Aspect ratio dependence on surface enhanced Raman scattering using silver and gold nanorod substrates
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DOI：
10.1039/b512573a
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发表时间：
2006-01-01
影响因子：
3.3
通讯作者：
Murphy, CJ
中科院分区：
文献类型：
--
作者：
Orendorff, CJ;Gearheart, L;Murphy, CJ
纵横比为 1 至 16 的银和金纳米棒已被用作胶体溶液中表面增强拉曼光谱 (SERS) 的基底。改变纳米棒的纵横比，以在纳米棒纵向等离子体激元带和激发源之间提供不同程度的重叠，以确定其对整体表面增强的影响。结果表明，等离激元带与激发源重叠的基底的增强因子比等离激元带不重叠的基底大 10 - 10(2) 倍。
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.