Tunable grating-assisted surface plasmon resonance by use of nano-polymer dispersed liquid crystal electro-optical material
Tunable grating-assisted surface plasmon resonance by use of nano-polymer dispersed liquid crystal electro-optical material
复制标题
纳米聚合物分散液晶电光材料可调谐光栅辅助表面等离子体共振
DOI：
10.1016/j.optcom.2007.03.062
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发表时间：
2007
影响因子：
2.4
通讯作者：
O. Parriaux
中科院分区：
文献类型：
--
作者：
S. Massenot;R. Chevallier;J. D. B. D. L. Tocnaye;O. Parriaux
本文报道了金属衍射光栅激发的表面等离子体共振（SPR）位移的实验观察。这种效果是通过使用由分散在主体聚合物中的纳米尺寸的液晶液滴组成的电光材料来实现的。在波状金属表面上的薄膜形式的该材料的平均折射率可以通过施加外部电场来修改，并且调整SPR激发导致反射最小值的波长。文中介绍了该元件原理的理论设计和实验验证。
This paper reports on the experimental observation of the displacement of a surface plasmon resonance (SPR) excited by a metallic diffraction grating. This effect is achieved by the use of an electro-optical material composed of nano-sized droplets of liquid crystals dispersed in a host polymer. The average refractive index of this material in the form of a thin film on the undulated metal surface can be modified with the application of an external electric field and to tune the wavelength at which the SPR excitation leads to a reflection minimum. The theoretical design and experimental demonstration of the principle of this component are described.