Surface enhanced Raman scattering on gold nanowire arrays: Evidence of strong multipolar surface plasmon resonance enhancement

被引:112
作者
Billot, L. [1 ]
de la Chapelle, M. Lamy [1 ]
Grimault, A. -S. [1 ]
Vial, A. [1 ]
Barchiesi, D. [1 ]
Bijeon, J. -L. [1 ]
Adam, P. -M. [1 ]
Royer, P. [1 ]
机构
[1] Univ Technol Troyes, Lab Nanotechnol & Instrumentat Opt, Inst Charles Delaunay, FRE 2848, F-10010 Troyes, France
关键词
D O I
10.1016/j.cplett.2006.02.041
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
The SERS efficiencv of Lyold nanowires arrays elaborated by electron beam lithography and lift-off technique efficiency is investigated by depositing a molecular probe (BPE) trans-1,2-bis(4-pyridyl)ethylen on the arrays and using an excitation wavelength of 632.8 nm. The observation of the dependence of the Raman enhancement versus the nanowire length is clearly demonstrated and remarkably a maximum enhancement is observed. For such arrays, we also show clearly that odd multipolar localised surface plasmon modes (up to seventh-order) exhibits a stronger efficiency than the first dipolar order in SERS process. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:303 / 307
页数:5
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