Plasmonic Ratchet Wheels: Switching Circular Dichroism by Arranging Chiral Nanostructures

被引：228

作者：

Valev, V. K. ^{[1
]}

Smisdom, N. ^{[2
]}

Silhanek, A. V. ^{[1
]}

De Clercq, B. ^{[2
]}

Gillijns, W. ^{[1
]}

Ameloot, M. ^{[2
]}

Moshchalkov, V. V. ^{[1
]}

Verbiest, T.

机构：

[1] Katholieke Univ Leuven, INPAC, Nanoscale Superconduct & Magnetism & Pulsed Field, B-3001 Heverlee, Belgium

[2] Univ Limburg, BIOMED, Univ Hasselt & Transnatl, B-3590 Diepenbeek, Belgium

来源：

NANO LETTERS | 2009年 / 9卷 / 11期

关键词：

2ND-HARMONIC GENERATION;

D O I：

10.1021/nl9021623

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate circular dichroism (CD) in the second harmonic generation (SHG) signal from chiral assemblies of G-shaped nanostructures made of gold. The arrangement of the G shapes is crucial since upon reordering them the SHG-CD effect disappears. Microscopy reveals SHG "hotspots" assemblies, which originate in enantiomerically sensitive plasmon modes, having the novel property of exhibiting a chiral geometry themselves in relation with the handedness of the material. These results open new frontiers in studying chirality.

引用

页码：3945 / 3948

页数：4

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