Dimer-Based Three-Dimensional Photonic Crystals

被引：57

作者：

Hosein, Ian D. ^{[1
]}

Lee, Stephanie H. ^{[1
]}

Liddell, Chekesha M. ^{[1
]}

机构：

[1] Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA

来源：

ADVANCED FUNCTIONAL MATERIALS | 2010年 / 20卷 / 18期

基金：

美国国家科学基金会;

关键词：

COLLOIDAL CRYSTALS; BAND-GAP; PARTICLES; FABRICATION; PHASE; FLUID;

D O I：

10.1002/adfm.201000134

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The self-assembly of polystyrene dimer- and spherocylinder-shaped colloids is achieved via controlled drying on glass and silicon substrates. 3D monoclinic colloidal crystal structures are determined from scanning electron microscopy images of sections prepared using focused ion-beam (FIB) milling. Full photonic bandgaps between the eighth and ninth bands are found for a systematic range of colloidal dimer shapes explored with respect to the degree of constituent lobe fusion and radius ratio. The pseudogap between bands 2 and 3 for spherocylinder-based monoclinic crystals is also probed using normal incidence reflection spectroscopy.

引用

页码：3085 / 3091

页数：7

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