Optical conveyor belt for delivery of submicron objects -: art. no. 174101

被引:203
作者
Cizmár, T
Garcés-Chávez, V
Dholakia, K
Zemánek, P
机构
[1] Acad Sci Czech Republ, Inst Sci Instruments, CS-61264 Brno, Czech Republic
[2] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
关键词
D O I
10.1063/1.1915543
中图分类号
O59 [应用物理学];
学科分类号
摘要
`We demonstrate an optical conveyor belt that provides trapping and subsequent precise delivery of several submicron particles over a distance of hundreds of micrometers. This tool is based on a standing wave (SW) created from two counter-propagating nondiffracting beams where the phase of one of the beams can be changed. Therefore, the whole structure of SW nodes and antinodes moves delivering confined micro-objects to specific regions in space. Based on the theoretical calculations, we confirm experimentally that certain sizes of polystyrene particles jump more easily between neighboring axial traps and the influence of the SW is much weaker for certain sizes of trapped object. Moreover, the measured ratios of longitudinal and lateral optical trap stiffnesses are generally an order of magnitude higher compared to the classical single beam optical trap. (c) 2005 American Institute of Physics.
引用
收藏
页码:1 / 3
页数:3
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