Surface-Enhanced Raman Scattering on Gold Nanotrenches and Nanoholes

被引：6
作者：
Yue, Weisheng [1 ]
Yang, Yang [1 ]
Wang, Zhihong [1 ]
Chen, Longqing [1 ]
Wong, Kim Chong [1 ]
Syed, Ahad [1 ]
Chen, Long [1 ]
Wang, Xianbin [1 ]
机构：
[1] King Abdullah Univ Sci & Technol KAUST, Adv Nanofabricat & Imaging Core Lab, Thuwal 239556900, Saudi Arabia
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2012年 / 12卷 / 04期
关键词：
Surface-Enhanced Raman Scattering (SEAS); Gold Nanotrenches; Gold Nanoholes; Localized Surface Plasmon Resonance (LSPR); SPECTROSCOPY; 4-MERCAPTOPYRIDINE; NANOPARTICLES; DEPENDENCE; SERS;
D O I：
10.1166/jnn.2012.5822
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Dependent effects on edge-to-edge distance and incidence polarization in surface-enhanced Raman Scattering (SEAS) were studied in detection of 4-mercaptopyridine (4-MPy) molecules absorbed on gold nanotrenches and nanoholes. The gold nanostructures with controllable size and period were fabricated using electron-beam lithography. Large SEAS enhancement in detection of 4-MPy molecules on both nanostructred substrates was observed. The SEAS enhancement increased exponentially with decrease of edge-to-edge distance for both the nanotrenches and nanoholes while keeping the sizes of the nanotrenches and nanoholes unchanged. Investigation of polarization dependence showed that the SERS enhancement of nanotrenches was much more sensitive to the incidence polarizations than that of nanoholes.
引用
收藏
页码：3018 / 3025
页数：8
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