Surfactant sensing based on whispering-gallery-mode lasing in liquid-crystal microdroplets

被引：98
|
作者：
Humar, M. [1 ]
Musevic, I. [1 ,2 ]
机构：
[1] J Stefan Inst, SI-1000 Ljubljana, Slovenia
[2] Univ Ljubljana, Fac Math & Phys, SI-1000 Ljubljana, Slovenia
来源：
OPTICS EXPRESS | 2011年 / 19卷 / 21期
关键词：
ORDERING TRANSITIONS; AQUEOUS PHASES; INTERFACES; EMULSIONS; PROTEINS;
D O I：
10.1364/OE.19.019836
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Lasing of whispering-gallery modes in nematic liquid-crystal microdroplets, floating in water, is demonstrated. It is shown that millimolar concentrations of sodium dodecyl sulfate in water effect the orientation of liquid-crystal molecules in the microdroplet, which changes the lasing spectrum. The presence of targeted molecules in water can be monitored by simply measuring and recognizing the spectrum of light, lasing from a small liquid-crystal droplet in water. (C) 2011 Optical Society of America
引用
收藏
页码：19836 / 19844
页数：9
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