Laser trapping and manipulation under focused evanescent wave illumination

被引：120

作者：

Gu, M ^{[1
]}

Haumonte, JB ^{[1
]}

Micheau, Y ^{[1
]}

Chon, JWM ^{[1
]}

Gan, XS ^{[1
]}

机构：

[1] Swinburne Univ Technol, Sch Biophys Sci & Elect Engn, Ctr Microphoton, Hawthorn, Vic 3122, Australia

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 21期

关键词：

D O I：

10.1063/1.1756200

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Laser trapping is based on the radiation pressure on a small particle in the focal region of a high numerical-aperture objective. Currently, the focal spot of a trapping beam is elongated along the longitudinal direction and thus the axial size of the trapping volume is approximately three times larger than that in the transverse direction. We report on a laser trapping technique under focused evanescent wave illumination. Therefore laser trapping of micro/nano-objects can be achieved in the near-field region with an axial trapping size of approximately 60 nm, which is reduced by approximately one order of magnitude. Hence, this technique is of significant importance in nanometry including single molecule detection and manipulation. (C) 2004 American Institute of Physics.

引用

页码：4236 / 4238

页数：3

共 18 条

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