Resonant properties of coupled silver hemispheroids

被引：2

作者：

Babich, Ekaterina S. ^{[1
]}

Scherbak, Sergey A. ^{[1
,2
]}

Redkov, Alexey V. ^{[1
,2
,3
]}

Kamenskii, Alexander N. ^{[1
,2
]}

Reduto, Igor V. ^{[1
,2
,4
]}

Lipovskii, Andrey A. ^{[1
,2
]}

机构：

[1] Peter Great St Petersburg Polytech Univ, Inst Phys Nanotechnol & Telecommun, Polytechnicheskaya 29, St Petersburg 195251, Russia

[2] St Petersburg Acad Univ, Dept Phys & Technol Nanostruct, Khlopina 8-3, St Petersburg 194021, Russia

[3] RAS, Inst Problems Mech Engn, Bolshoj Pr VO 61, St Petersburg 199178, Russia

[4] Univ Eastern Finland, Inst Photon, Yliopistokatu 7,POB 111, Joensuu 80101, Finland

来源：

JOURNAL OF NANOPHOTONICS | 2017年 / 11卷 / 03期

基金：

俄罗斯基础研究基金会;

关键词：

plasmonics; coupled silver nanoparticles; surface-enhanced Raman spectroscopy; dark-field optical spectroscopy; OPTICAL-PROPERTIES; SURFACE; TEMPERATURE; ENHANCEMENT; ABSORPTION; MOLECULES; DYNAMICS; PARTICLE; SIZE;

D O I：

10.1117/1.JNP.11.032503

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We present a study of resonant optical properties of paired silver hemispheroids grown on a glass substrate using out-diffusion technique combined with thermal poling of the glass. Atomic force microscopy was used to characterize the morphology of the grown nanostructures. Dark-field spectroscopy and numerical simulation were applied to study the optical properties of the coupled nanoparticles (NPs) depending on the interparticle gap and size difference of the hemispheroids in a pair. Raman spectroscopy testing of the coupled hemispherical NPs showed that they can provide signal enhancement factor exceeding one of a single hemispherical NP. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE).

引用

页数：9

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