利用金纳米棒的局域表面等离子体共振区分表面和体相相互作用。

Differentiating surface and bulk interactions using localized surface plasmon resonances of gold nanorods.

作者信息

Nehru Neha, Donev Eugenii U, Huda Gazi M, Yu Linliang, Wei Yinan, Hastings J Todd

机构信息

Electrical and Computer Engineering, University of Kentucky, Lexington, Kentucky 40506, USA.

出版信息

Opt Express. 2012 Mar 26;20(7):6905-14. doi: 10.1364/OE.20.006905.

DOI:10.1364/OE.20.006905

PMID:22453368

Abstract

We demonstrate a novel localized surface-plasmon resonance sensor that can distinguish surface binding interactions from interfering bulk effects. This is accomplished by utilizing the longitudinal and transverse plasmon modes of gold nanorods. We have investigated, both numerically and experimentally, the effect of change in background refractive index and surface binding on the two resonances of a gold nanorod on an indium tin oxide coated glass substrate.

摘要

我们展示了一种新型的局域表面等离子体共振传感器，它能够将表面结合相互作用与干扰性的体效应区分开来。这是通过利用金纳米棒的纵向和横向等离子体模式来实现的。我们通过数值模拟和实验研究了背景折射率的变化以及表面结合对氧化铟锡涂层玻璃基板上金纳米棒的两种共振的影响。