(Au,Ag,Cu)/SiO_2二元合金分散复合薄膜非线性光吸收的Mie理论模拟  

Simulation on Nonlinear Optical Absorption of Binary Alloy Dispersed(Au,Ag,Cu)/SiO_2 Nano-Composite Films by Modifying Mie Theory

作　　者：严丽平[1] 张波萍[1] 赵翠华[1] 李顺[1] 王士京[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083

出　　处：《无机化学学报》2011年第6期1105-1110,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家重点基础研究发展计划(No.2007CB613301);国家自然科学基金(No.50972012)资助项目

摘　　要：用修正的Mie理论,模拟计算分析了(Ag,Cu)/SiO2、(Au,Cu)/SiO2、(Ag,Au)/SiO2合金纳米颗粒分散体系的理论吸收光谱。研究发现当二元金属纳米颗粒以合金形式存在时,在一个波段处出现SPR吸收峰,峰位与合金组元的相对含量相关。模拟出的理论吸收光谱与实验结果一致。The optical absorption spectra of the（Ag,Cu）/SiO2,（Au,Cu）/SiO2,（Ag,Au）/SiO2 binary alloy dispersed nano-composite films were simulated by the modified Mie theory.It was found that an obvious SPR absorption peak was observed in a wavelength if dual metal nano particles existed in an alloy form.In addition,the peak positions and the binary alloy content were related.The calculated optical absorption spectra by the proposed method in this study showed a good agreement with the reported experiment results.It suggests that the linear superposition method is feasible to calculate the absorption spectra of other binary and/or multiplex alloy nano-composite films.

关 键 词：Mie理论 (Ag Cu)/SiO2 (Au Cu)/SiO2和(Ag Au)/SiO2二元合金复合薄膜 光吸收谱 

分 类 号：O614.12[理学—无机化学]