Experimental observation of narrow surface plasmon resonances in gold nanoparticle arrays

被引：420

作者：

Chu, Yizhuo ^{[1
]}

Schonbrun, Ethan ^{[1
]}

Yang, Tian ^{[1
]}

Crozier, Kenneth B. ^{[1
]}

机构：

[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

APPLIED PHYSICS LETTERS | 2008年 / 93卷 / 18期

基金：

美国国家科学基金会;

关键词：

diffraction gratings; finite difference time-domain analysis; gold; light diffraction; nanoparticles; surface plasmon resonance;

D O I：

10.1063/1.3012365

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate that coupling between grating diffraction and localized surface plasmons in two-dimensional gold nanoparticle arrays in water leads to narrow near-infrared resonance peaks in measured far field extinction spectra. Good agreement is obtained between finite difference time domain (FDTD) calculations and experimental extinction spectra. The FDTD calculations predict that the gold nanoparticle arrays exhibit near-field electric field intensity (E(2)) enhancements approximately one order of magnitude greater than those of single isolated gold nanoparticles.

引用

页数：3

共 8 条

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