Optical effects of charges in colloidal solutions

被引：5

作者：

Chang, Railing ^{[1
]}

Chung, Hung-Yi ^{[2
]}

Chen, Chih-Wei ^{[3
]}

Chiang, Hai-Pang ^{[1
]}

Leung, P. T. ^{[4
]}

机构：

[1] Natl Taiwan Ocean Univ, Inst Optoelect Sci, Keelung, Taiwan

[2] 129 Hangzhou Rd, Taoyuan 320, Taiwan

[3] Natl Synchrotron Radiat Res Ctr, 101,Xinan Rd, Hsinchu 300, Taiwan

[4] Portland State Univ, Dept Phys, POB 751, Portland, OR 97207 USA

来源：

OPTICAL MATERIALS | 2017年 / 66卷

关键词：

Extraneous charges; Composites; Polymeric and metallic colloids; ELECTROMAGNETIC-WAVES; PHOTONIC CRYSTALS; FLUORESCENCE; PARTICLES; NANOPARTICLES; SCATTERING; CLUSTER; PR3+YSO;

D O I：

10.1016/j.optmat.2017.01.040

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The optical response of charged polymeric and metallic colloids is investigated using effective medium theories for composite systems of nanoparticles. Based on the Bohren-Hunt theory for generalized Mie scattering from charged particles, an effective quasi-static dielectric function previously obtained is applied to the present study to characterize the response from the various colloidal particles. It is found that such effects are more prominent for polymeric and nonmetallic colloidal solutions in general. In addition, the effects of clustering among the colloidal particles are also studied via a fractal model available from the literature. Detailed numerical studies of the dependence of these effects on the amount of extraneous charge, as well as on the geometry and volume fraction of the colloidal particles are presented. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：43 / 47

页数：5

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