Characterization of internal order of colloidal crystals by optical diffraction

被引：21

作者：

Allard, M ^{[1
]}

Sargent, EH

Kumacheva, E

Kalinina, O

机构：

[1] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

[2] Univ Toronto, Dept Chem, Toronto, ON M5S 3H6, Canada

来源：

OPTICAL AND QUANTUM ELECTRONICS | 2002年 / 34卷 / 1-3期

基金：

加拿大自然科学与工程研究理事会;

关键词：

colloid; optical diffraction; oscillatory shear; photonic crystal;

D O I：

10.1023/A:1013397721552

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report the results of the optical characterization of photonic crystals consisting of close-packed arrays of polymeric monodispersed microspheres. The excellent agreement of the diffraction peak wavelengths with Bragg's law enables a precise determination of the sphere diameter. Optical diffraction is used to assess the quality of the internal order of colloidal crystals and to identify optimum growth conditions. This work leads to an estimate of the average free propagation distance of light, which is limited by incoherent scattering due to lattice imperfections, of up to 30 lattice constants.

引用

页码：27 / 36

页数：10

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