Interparticle coupling effects in nanofabricated substrates for surface-enhanced Raman scattering

被引：405

作者：

Gunnarsson, L ^{[1
]}

Bjerneld, EJ ^{[1
]}

Xu, H ^{[1
]}

Petronis, S ^{[1
]}

Kasemo, B ^{[1
]}

Käll, M ^{[1
]}

机构：

[1] Chalmers Univ Technol, Dept Appl Phys, S-41296 Gothenburg, Sweden

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 06期

关键词：

D O I：

10.1063/1.1344225

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Surface-enhanced Raman scattering (SERS) substrates, consisting of arrays of electromagnetically coupled Ag nanoparticles on Si, were manufactured by electron-beam lithography. Substrate Raman efficiency, evaluated from the relative SERS intensities of the adsorbates rhodamine 6G and thiophenol, was found to increase rapidly with decreasing interparticle separation, signaling the importance of strong interparticle coupling effects in SERS. The observed SERS efficiency variation can be qualitatively explained in terms of electrostatic models of coupled metal structures. (C) 2001 American Institute of Physics.

引用

页码：802 / 804

页数：3

共 9 条

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