粒子聚集体对光的吸收和弹性散射。

Absorption and elastic scattering of light by particle aggregates.

作者信息

Quinten M, Kreibig U

出版信息

Appl Opt. 1993 Oct 20;32(30):6173-82. doi: 10.1364/AO.32.006173.

DOI:10.1364/AO.32.006173

PMID:20856447

Abstract

Light scattering and absorption by spherical particles is extended to aggregates of spheres with arbitrary shape and size. We applied the theory of G6rardy and Ausloos [Phys. Rev. B 25, 4204-4229 (1082)] to compute the total extinction loss spectra of several aggregates of nanometer-sized silver spheres from the near IR to the near UV. Silver was best suited to provide quantitative comparison with experiments concerning the scattering and absorption in the visible spectral region. Additional resonant extinction was obtained besides the resonant extinction of the single silver sphere. The spectra were discussed in detail to give general results that are independent of the particle material.

摘要

球形粒子的光散射和吸收被扩展到具有任意形状和大小的球体聚集体。我们应用了G6rardy和Ausloos的理论[《物理评论B》25, 4204 - 4229 (1082)]来计算从近红外到近紫外的几个纳米尺寸银球聚集体的总消光损失光谱。银最适合与关于可见光谱区域散射和吸收的实验进行定量比较。除了单个银球的共振消光之外，还获得了额外的共振消光。对光谱进行了详细讨论，以给出与粒子材料无关的一般结果。