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Defect State Dampening of Surface Plasmons in Au-YSZ Nanocomposites

机译:Au-YSZ纳米复合材料表面等离激元的缺陷态阻尼

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The optical signature of Au nanoparticles within an yttria-stabilized zirconia matrix has been demonstrated as an optical beacon for changes in emission gas concentrations within harsh environments. It has been proposed that this broadening in the localized surface plasmon resonance (LSPR) band is due to the inelastic scattering of plasmons by filled oxygen ion vacancies. Using the theoretical expressions developed by others for adsorbate induced dampening, a model has been developed for plasmonic nanocomposites to describe the changes observed in the LSPR band broadening for metallic nanoparticles due to the same scattering mechanisms. The model agrees with the broadening observed for the experimental results.
机译:氧化钇稳定的氧化锆基质中的Au纳米粒子的光学特征已被证明是在恶劣环境中改变废气浓度的光学信标。已经提出,局部表面等离子体激元共振(LSPR)带中的这种扩展是由于填充的氧离子空位引起的等离子体激元的非弹性散射。使用其他人针对吸附物引起的阻尼而开发的理论表达式,已开发出等离子体纳米复合材料的模型,以描述由于相同的散射机制而在金属纳米颗粒的LSPR谱带展宽中观察到的变化。该模型与针对实验结果观察到的拓宽相吻合。

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