Polarization-dependent surface-enhanced Raman spectroscopy of isolated silver nanoaggregates

被引：187

作者：

Xu, HX

Käll, M

机构：

[1] Lund Univ, Div Solid State Phys, S-22100 Lund, Sweden

[2] Chalmers, Dept Appl Phys, S-41296 Gothenburg, Sweden

来源：

CHEMPHYSCHEM | 2003年 / 4卷 / 09期

关键词：

nanoparticles; polarization; silver; surface-enhanced Raman scattering;

D O I：

10.1002/cphc.200200544

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：

Ultrasensitive to nanogaps: Raman scattering from pairs of silver nanoparticles bound together by hemoglobin varies strongly with incident polarization. Experiments and electrodynamic calculations (see graphic) show that only that part of the incident field that is polarized parallel to the dimer axis generates intense surface-enhanced Raman scattering (SERS). The results support the idea that nanogaps between particles are a key ingredient of ultrasensitive SERS analysis.

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收藏

页码：1001 / 1005

页数：5

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