Surface-enhanced Raman scattering from finite arrays of gold nano-patches

被引：7

作者：

Vincenti, M. A. ^{[1
,2
]}

Grande, M. ^{[3
]}

Bianco, G. V. ^{[4
]}

de Ceglia, D. ^{[1
,2
]}

Stomeo, T. ^{[5
]}

De Vittorio, M. ^{[5
,6
]}

Petruzzelli, V. ^{[3
]}

Bruno, G. ^{[4
]}

D'Orazio, A. ^{[3
]}

Scalora, M. ^{[2
]}

机构：

[1] AEgis Technol Inc, Huntsville, AL 35806 USA

[2] USA, Charles M Bowden Res Lab, Huntsville, AL USA

[3] Politecn Bari, Dipartimento Elettrotecn & Elettron, I-70125 Bari, Italy

[4] IMIP CNR, I-70126 Bari, Italy

[5] Ist Italiano Technol IIT, Ctr Biomol Nanotechnol, I-73010 Lecce, Italy

[6] Univ Salento, Dip Ingn Innovaz, CNR Ist Nanosci, Natl Nanotechnol Lab NNL, I-73010 Lecce, Italy

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 01期

关键词：

SINGLE-MOLECULE; NANOPARTICLES; SERS;

D O I：

10.1063/1.4772725

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We experimentally investigate the surface-enhanced Raman scattering (SERS) response of a 2D-periodic array of square gold nano-patches, functionalized by means of a conjugated, rigid thiol. We measure a Raman signal enhancement up to 200 times more intense compared to other plasmon-based nanostructures functionalized with the same molecule, and show that the enhancement is not strictly correlated to the presence of plasmonic resonances. The agreement between experimental and theoretical results reveals the importance of a full-wave analysis based on the inclusion of the actual scattering cross section of the molecule. The proposed numerical approach may serve not only as a tool to predict the enhancement of Raman signal scattered from strongly resonant nanostructure but also as an effective instrument to engineer SERS platforms that target specific molecules. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4772725]

引用

页数：5

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