Liquid-crystals for tunable photonic crystals, frequency selective surfaces and negative index material development

被引：25

作者：

Khoo, I. C. ^{[1
]}

Williams, Yana

Diaz, Andres

Chen, Kan

Bossard, J. A.

Li, L.

Werner, D. H.

Graugnard, E.

King, J. S.

Jain, S.

Summers, C. J.

机构：

[1] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

[2] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2006年 / 453卷

关键词：

frequency selective surfaces; liquid crystals; negative index materials; photonic crystals; tunable reflection and transmission;

D O I：

10.1080/15421400600653654

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present the results of experimental and theoretical studies that demonstrate the feasibility of realizing electro-optical switching, frequency filtering and negative index of refraction. In liquid crystal infiltrated TiO2 inverse opal 3-D photonic crystals, we observed a sizeable electrical tuning of the Bragg reflection peak. In frequency selective structures with a liquid crystal over-layer, the tuning range can be as wide as 380 nm, operational throughout the entire visible - far infrared spectra range. Furthermore, some of the structures can be designed to exhibit a negative index of refraction property over a predetermined frequency interval.

引用

页码：309 / 319

页数：11

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