Surface plasmon broadening for arbitrary shape nanoparticles: A geometrical probability approach
Surface plasmon broadening for arbitrary shape nanoparticles: A geometrical probability approach
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DOI：
10.1063/1.1587686
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发表时间：
2003-08-15
影响因子：
4.4
通讯作者：
Schatz, GC
中科院分区：
文献类型：
--
作者：
Coronado, EA;Schatz, GC
提出了一种计算任意形状凸粒子有效传导电子平均自由程的几何概率度量。结果表明，对于简单粒子形状，由平均自由程确定的等离子体激元宽度与精确的量子力学宽度是一致的。我们使用平均自由程公式来计算银球体、方棱柱、截断四面体和柱体的介电函数和消光谱随尺寸和形状的变化。(C)2003年美国物理研究所。
A geometrical probability measure is proposed for calculating the effective conduction electron mean free path of an arbitrary shape convex particle. It is shown that the plasmon widths determined from this mean free path are consistent with exact quantum mechanical widths for simple particle shapes. We use the mean free path formula to evaluate size and shape dependent dielectric functions and extinction spectra for silver spheroids, square prisms, truncated tetrahedrons, and cylinders. (C) 2003 American Institute of Physics.