Polarization dependence of tip-enhanced Raman and plasmon-resonance Rayleigh scattering spectra

被引：7
作者：
Kitahama, Yasutaka [1 ]
Uemura, Shohei [1 ]
Katayama, Ryota [1 ]
Suzuki, Toshiaki [2 ]
Itoh, Tamitake [3 ]
Ozaki, Yukihiro [1 ]
机构：
[1] Kwansei Gakuin Univ, Sch Sci & Technol, Dept Chem, Sanda, Hyogo 6691337, Japan
[2] UNISOKU Co Ltd, 2-4-3 Kasugano, Hirakata, Osaka 5730131, Japan
[3] Natl Inst Adv Ind Sci & Technol, Hlth Res Inst, Nanobioanal Res Grp, Takamatsu, Kagawa 7610395, Japan
来源：
APPLIED PHYSICS LETTERS | 2017年 / 110卷 / 23期
基金：
日本科学技术振兴机构;
关键词：
LIGHT-SCATTERING; SPECTROSCOPY; MICROSCOPY;
D O I：
10.1063/1.4984922
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Tip-enhanced Raman scattering (TERS) spectroscopy has high sensitivity and high spatial resolution, although it shows low reproducibility due to the variable optical properties of the tips. In the present study, polarized scattering spectra of localized surface plasmon resonance (LSPR) at the apex of the tip induced by conventional dark field illumination were compared with the corresponding TERS spectra, generated by excitation using polarization not only parallel and perpendicular to the tip, but also vertical to the sample plane (z-polarization). The polarization-dependence of LSPR was consistent with that of the TERS. Thus, the optical properties of the tip can be easily optimized before TERS measurement by excitation polarization that induces the largest LSPR signal. Published by AIP Publishing.
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页数：5
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