Electromagnetic interactions in plasmonic nanoparticle arrays

被引：92
作者：
Bouhelier, A
Bachelot, R
Im, JS
Wiederrecht, GP
Lerondel, G
Kostcheev, S
Royer, P
机构：
[1] Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA
[2] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA
[3] Univ Technol Troyes, Lab Nanotechnol & Instrumentat Opt, CNRS, FRE 2671, F-10010 Troyes, France
来源：
JOURNAL OF PHYSICAL CHEMISTRY B | 2005年 / 109卷 / 08期
关键词：
D O I：
10.1021/jp046224b
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：
Single two-dimensional planar silver arrays and one-dimensional linear gold chains of nanoparticles were investigated by dark-field surface plasmon spectroscopy and studied as a function of interparticle distance, particle size, and number of particles. In agreement with recent theoretical predictions, a red shift of the surface plasmon resonance occurring in two-dimensional arrays was found for lattice spacings below 200 nm. This red shift is associated with a significant broadening of the resonance and is attributed to the onset of near-field interactions. We found that the relative contributions of the long-range and short-range interactions in two-dimensional arrays of particles are fundamentally different to those occurring in individual linear chains.
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页码：3195 / 3198
页数：4
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