Focusing surface plasmon polariton trapping of colloidal particles

被引：29

作者：

Fang, Zheyu ^{[1
]}

Lin, Feng ^{[1
]}

Huang, Shan ^{[1
]}

Song, Wentao ^{[1
]}

Zhu, Xing ^{[1
,2
]}

机构：

[1] Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China

[2] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 06期

基金：

中国国家自然科学基金;

关键词：

colloids; nanostructured materials; polaritons; radiation pressure; silver; surface plasmons; FORCE; FIELD;

D O I：

10.1063/1.3072610

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report focusing surface plasmon polariton (SPP) trapping of colloidal particles without optical interactions. Using a silver nanostructure, we demonstrate SPP launching and propagation under a p-polarized incident laser. In-plane Fresnel zone plate (FZP) is used to focus the SPP waves. Colloidal particles can be trapped at the silver nanostructure in the illumination region and the FZP focus area by focusing SPP force. The SPP tweezers open new perspectives in the subwavelength trapping and applications to lab-on-chip devices.

引用

页数：3

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