Surface plasmon optical tweezers: Tunable optical manipulation in the femtonewton range

被引：239

作者：

Righini, Maurizio ^{[1
]}

Volpe, Giovanni ^{[1
]}

Girard, Christian ^{[2
]}

Petrov, Dmitri ^{[1
,3
]}

Quidant, Romain ^{[1
,3
]}

机构：

[1] Inst Ciencies Foton, ICFO, Barcelona 08860, Spain

[2] CNRS, UPR 8011, CEMES, F-31055 Toulouse, France

[3] ICREA, Barcelona 08010, Spain

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.100.186804

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a quantitative analysis of 2D surface plasmon based optical tweezers able to trap microcolloids at a patterned metal surface under low laser intensity. Photonic force microscopy is used to assess the properties of surface plasmon traps, such as confinement and stiffness, revealing stable trapping with forces in the range of a few tens of femtonewtons. We also investigate the specificities of surface plasmon tweezers with respect to conventional 3D tweezers responsible for their selectivity to the trapped specimen's size. The accurate engineering of the trapping properties through the adjustment of the illumination parameters opens new perspectives in the realization of future optically driven on-a-chip devices.

引用

页数：4

共 22 条

[1] ACCELERATION AND TRAPPING OF PARTICLES BY RADIATION PRESSURE [J].