Effects of vertex truncation of polyhedral nanostructures on localized surface plasmon resonance
Effects of vertex truncation of polyhedral nanostructures on localized surface plasmon resonance
复制标题
多面体纳米结构顶点截断对局域表面等离子体共振的影响
DOI：
10.1364/oe.17.014967
复制
发表时间：
2009-08-17
期刊：
影响因子：
3.8
通讯作者：
Lin, Q.
中科院分区：
文献类型：
--
作者：
Ma, W. Y.;Yao, J.;Lin, Q.
多面体纳米结构被广泛用于实现局部表面等离子体共振（LSPR）。在实践中，由于纳米加工工艺的限制，这种结构的顶点几乎总是被截断的。研究了多面体纳米结构顶点截断对LSPR传感特性的影响。采用电动力学方法研究了三角形截顶纳米片的光学特性和传感性能，并进行了实验验证。与模拟分析相关的实验结果表明，所制造的三角形纳米片阵列具有约12.8%的截断比，截断比定义为沿三角形的边缘的截断长度沿着超过边缘长度。这显著影响纳米结构的光学性质，导致较差的传感性能。这些见解可用于指导高性能LSPR传感器的纳米结构的设计和制造。(C)2009年美国光学学会
Polyhedral nanostructures are widely used to enable localized surface plasmon resonance (LSPR). In practice, vertices of such structures are almost always truncated due to limitations of nanofabrication processes. This paper studies the effects of vertex truncation of polyhedral nanostructures on the characteristics of LSPR sensing. The optical properties and sensing performance of triangular nanoplates with truncated vertices are investigated using electrodynamics analysis and verified by experiment. The experimental results correlated with simulation analysis demonstrate that the fabricated triangular nanoplate array has a truncation ratio, defined as the length of truncation along an edge of the triangle over the edge length, of approximately 12.8%. This significantly influences optical properties of the nanostructures, resulting in poorer sensing performance. These insights can be used to guide the design and fabrication of nanostructures for high performance LSPR sensors. (C) 2009 Optical Society of America