FDTD Modeling of Gold Nanoparticles in a Nematic Liquid Crystal: Quantitative and Qualitative Analysis of the Spectral Tunability

被引：31

作者：

Dridi, Montacer ^{[1
]}

Vial, Alexandre ^{[1
]}

机构：

[1] Univ Technol Troyes, Inst Charles Delaunay, Lab Nanotechnol & Instrumentat Opt, F-10010 Troyes, France

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 21期

关键词：

SURFACE-PLASMON RESONANCE; SILVER NANOPARTICLES; DIELECTRIC ENVIRONMENT; OPTICAL-PROPERTIES; SERS APPLICATIONS; SENSITIVITY; ARRAYS; SHAPE; SIZE; SPECTROSCOPY;

D O I：

10.1021/jp910950m

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：

In this paper we numerically investigate an active plasmonic device that is based on an ordered array of gold nanocylinders with an elliptic basis embedded in a nematic liquid crystal (LC) layer. The localized surface plasmon resonance (LSPR) of the gold cylinders depends on the refractive index of the surrounding media, which depends on the orientation of the optical axis. Rotating the optical axis causes the LSPR to shift, and we will show that by modifying geometrical parameters we can increase the sensitivity of the LSPR to the orientation of the optical axis and thereby enhance the switching effects.

引用

页码：9541 / 9545

页数：5

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