三元纳米复合材料等离子体共振的自洽测定
Self consistent determination of plasmonic resonances in ternary nanocomposites
摘要：
我们发展了一种自洽的方法来预测多组分体系中等离子体共振随波长变化的行为。该方法基于Bergman-Milton公式的严格下限，能够预测实验光学数据，包括三元纳米复合材料中等离子体峰的位置，位移和形状，而无需使用任何ftting参数。我们的方法是基于查看3个组件的混合作为2个二元混合物的混合，每个在同一主机。我们得到了很好的预测的实验光学行为的混合物的Ag：Cu：SiO2和合金的Au-Cu：SiO2和Ag-Au：H2 O，这表明等离子体行为的基本物理是通过这种方法捕获。
英文摘要：
We have developed a self consistent technique to predict the behavior of plasmon resonances in multi-component systems as a function of wavelength. This approach, based on the tight lower bounds of the Bergman-Milton formulation, is able to predict experimental optical data, including the positions, shifts and shapes of plasmonic peaks in ternary nanocomposites without using any ftting parameters. Our approach is based on viewing the mixing of 3 components as the mixing of 2 binary mixtures, each in the same host. We obtained excellent predictions of the experimental optical behavior for mixtures of Ag:Cu:SiO2 and alloys of Au-Cu:SiO2 and Ag-Au:H2 O, suggesting that the essential physics of plasmonic behavior is captured by this approach.
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