钴的表面增强拉曼散射中的电磁增强因子计算  

The Electromagnetic Enhancement of Surface -enhanced Raman Scattering of Cobalt

作　　者：杨志林[1,2] 周海光[1] 姚建林[2] 吴德印[2] 胡建强[2] 任斌[2] 田中群[2] 

机构地区：[1]厦门大学物理系,厦门361005 [2]厦门大学固体表面物理化学国家重点实验室,化学系,厦门361005

出　　处：《光散射学报》2001年第4期195-198,共4页The Journal of Light Scattering

基　　金：国家自然科学基金 (No .2 0 0 0 30 0 8;2 990 30 0 9;2 98330 6 0 );教育部基金

摘　　要：本文初步探讨了钴电极的表面增强拉曼散射机理。采用二维阵列理论模型在 0 .5～ 4.0eV的光子能量范围对钴纳米椭球阵列的表面增强拉曼散射 (SERS)现象进行了理论分析。有关计算表明 ,经过合适的表面粗糙化的钴金属电极能产生较弱的表面增强效应 (SERS增强因子约 1 0 2 ～ 1 0 4 ) 。The aim of this work is to deal with the SERS mechanism of Co nano-ellipsoid arrays. Based on the theoretical model of the two dimensional arrays, the surface-enhanced Raman scattering from Co nano-ellipsoid arrays with the incident photon energy in the range of 0.5 ～ 4.0 eV was investigated. The calculation result shows Co can exhibit weak surface-enhanced Raman scattering effect (the enhancement factor is about 10 2 ～ 10 4) when the surface is roughened properly. To obtain two dimensional nanorod arrays with high aspect ratio as SERS active substrate is the key of further study on transition metals.

关 键 词：表面增强拉曼散射 电磁增强因子 计算 表面增强拉曼光谱 有序纳米结构 

分 类 号：O614.812[理学—无机化学] O657.37[理学—化学]