Equilibrium orientations and positions of non-spherical particles in optical traps

被引：41

作者：

Cao, Yongyin ^{[1
,2
]}

Stilgoe, Alexander B. ^{[2
]}

Chen, Lixue ^{[1
]}

Nieminen, Timo A. ^{[2
]}

Rubinsztein-Dunlop, Halina ^{[2
]}

机构：

[1] Harbin Inst Technol, Sch Sci, Dept Phys, Harbin 150001, Peoples R China

[2] Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 12期

基金：

澳大利亚研究理事会;

关键词：

ROTATION; TWEEZERS; MANIPULATION; FORCES; TORQUE;

D O I：

10.1364/OE.20.012987

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Dynamic simulation is a powerful tool to observe the behavior of arbitrary shaped particles trapped in a focused laser beam. Here we develop a method to find equilibrium positions and orientations using dynamic simulation. This general method is applied to micro- and nano-cylinders as a demonstration of its predictive power. Orientation landscapes for particles trapped with beams of differing polarisation are presented. The torque efficiency of micro-cylinders at equilibrium in a plane is also calculated as a function of tilt angle. This systematic investigation elucidates in both the function and properties of micro- and nano-cylinders trapped in optical tweezers. (C) 2012 Optical Society of America

引用

页码：12987 / 12996

页数：10

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