Surface-enhanced Raman scattering on tunable plasmonic nanoparticle substrates

被引：543

作者：

Jackson, JB

Halas, NJ ^{[1
]}

机构：

[1] Rice Univ, Dept Elect & Comp Engn, Houston, TX 77251 USA

[2] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA

[3] Rice Univ, Dept Chem, Houston, TX 77251 USA

[4] Rice Univ, Lab Nanophoton, Houston, TX 77251 USA

[5] Rice Univ, Rice Quantum Inst, Houston, TX 77251 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2004年 / 101卷 / 52期

关键词：

nanoparticles; nanoshells; plasmons; spectroscopy;

D O I：

10.1073/pnas.0408319102

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Au and Ag nanoshells are investigated as substrates for surface-enhanced Raman scattering (SERS). We find that SERS enhancements on nanoshell films are dramatically different from those observed on colloidal aggregates, specifically that the Raman enhancement follows the plasmon resonance of the individual nanoparticles. Comparative finite difference time domain calculations of fields at the surface of smooth and roughened nanoshells reveal that surface roughness contributes only slightly to the total enhancement. SERS enhancements as large as 2.5 x 10(10) on Ag nanoshell films for the nonresonant molecule p-mercaptoaniline are measured.

引用

页码：17930 / 17935

页数：6

共 41 条

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