Near-field Raman imaging and electromagnetic field confinement in the self-assembled monolayer array of gold nanoparticles

被引：37

作者：

Hossain, Mohammad Kamal ^{[4
]}

Shimada, Toru ^{[2
]}

Kitajima, Masahiro ^{[1
,3
,4
,5
]}

Imura, Kohei ^{[5
,6
]}

Okamoto, Hiromi ^{[5
,6
]}

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[2] Rikkyo Univ, Dept Chem, Toshima Ku, Tokyo 1718501, Japan

[3] Natl Def Acad, Dept Appl Phys, Kanagawa 2390811, Japan

[4] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki 3050005, Japan

[5] Inst Mol Sci, Okazaki, Aichi 4448585, Japan

[6] Grad Univ Adv Studies, Okazaki, Aichi 4448585, Japan

来源：

LANGMUIR | 2008年 / 24卷 / 17期

关键词：

D O I：

10.1021/la8001543

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Spatial distribution of surface enhanced Raman activity is visualized for two-dimensional (2D) nearly close-packed and well-ordered monolayer array of gold nanoparticles by using scanning near-field optical microscope. The 2D arrays exhibit highly nonuniform enhancement in Raman scattering, i.e., the regions along the edge of the 2D array are preferentially enhanced. We demonstrate that the spatial distribution of the localized electric field is also nonuniform and agrees well with that of the Raman enhancement.

引用

页码：9241 / 9244

页数：4

共 36 条

[1]

[Anonymous], PRINCIPLES NANOOPTIC

[2]

Aroca R., 2006, Surface-Enhanced Vibrational Spectroscopy

[3] Surface-enhanced Raman scattering [J].