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Optical and transport properties of spheroidal metal nanoparticles with account for the surface effect

机译：球形金属纳米粒子的光学和传输性质，考虑了表面效应

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摘要

The kinetic approach is applied to develop the Drude-Sommerfeld model for studying the optical and electrical transport properties of spheroidal metallic nanoparticles when the free electron path is much greater than the particle size. For the nanoparticles of an oblate or a prolate spheroidal shape a dependence of the dielectric function and the electric conductivity on a number of factors, including the frequency, the particle radius, the spheroidal aspect ratio, and the orientation of the electric field with respect to the particle axes, has been been found. The oscillations of the real and imaginary parts of the dielectric permeability have been found with increasing particle size at some fixed frequencies or with frequency increasing at some fixed radius of a nanoparticle. The results obtained in the kinetic approach are compared with those known from the classical model.
机译：当自由电子路径远大于粒径时，采用动力学方法开发了Drude-Sommerfeld模型，用于研究球形金属纳米颗粒的光学和电传输性质。对于扁球形或扁球形的纳米颗粒，介电函数和电导率取决于许多因素，包括频率，粒子半径，球体长宽比以及电场相对于找到了粒子轴。已经发现介电导率的实部和虚部的振荡随着在某些固定频率处的颗粒尺寸增加或随着在纳米粒子的某些固定半径处的频率增加而发生。将动力学方法中获得的结果与经典模型中已知的结果进行比较。

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