Electrically tunable diffraction of light from 2D nematic colloidal crystals

被引：18
作者：
Humar, M. [1 ]
Skarabot, M. [1 ]
Ravnik, M. [2 ]
Zumer, S. [2 ]
Poberaj, I. [2 ]
Babic, D. [2 ]
Musevic, I. [1 ,2 ]
机构：
[1] Jozef Stefan Inst, Ljubljana 1000, Slovenia
[2] Univ Ljubljana, Fac Math & Phys, Ljubljana 1000, Slovenia
来源：
EUROPEAN PHYSICAL JOURNAL E | 2008年 / 27卷 / 01期
关键词：
D O I：
10.1140/epje/i2008-10353-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We show that diffraction of visible light from 2D dipolar nematic colloidal crystals can be tuned electrically. When the external electric field of similar to 1V/mu m is applied in a direction perpendicular to the plane of the 2D colloidal crystal, the induced strain is highly anisotropic, and the inter-colloidal spacing changes by as much as 20% along one direction and similar to 2% along the perpendicular one. Although the speed of response is in the range of several seconds, this novel mechanism could provide interesting photonic applications.
引用
收藏
页码：73 / 79
页数：7
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