Trapping and revolving micron particles by transformable line traps of optical tweezers
Trapping and revolving micron particles by transformable line traps of optical tweezers
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DOI：
10.3788/col202220.053801
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发表时间：
2022
影响因子：
3.5
通讯作者：
Lingyao Yu;Yuan Jia;Xujin Hu;Shaofei Wang;Hongyu Chen;Shuai Liu;Hongchang Deng;Maowen Wang;J. Yin
中科院分区：
文献类型：
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作者：
Lingyao Yu;Yuan Jia;Xujin Hu;Shaofei Wang;Hongyu Chen;Shuai Liu;Hongchang Deng;Maowen Wang;J. Yin
光学线形镊子已经成为操纵大微米粒子的有效工具。在这篇文章中，我们提出了利用横向电磁类模激光光源来产生具有可变换组态的线陷阱。我们设计了一条光路，用一系列透镜模拟像散光束和线陷阱的产生，实现了柱面透镜相对于旋转角的旋转变换。实验表明，直径为5~20μm的球形颗粒在实验中可以被捕获、取向和旋转。由可变形线陷阱产生的周期性捕获力可能为研究软颗粒和生物细胞的力学性质开辟了一条新的途径。
Optical line tweezers have been an efficient tool for the manipulation of large micron particles. In this paper, we propose to create line traps with transformable configurations by using the transverse electromagnetic mode-like laser source. We designed an optical path to simulate the generation of the astigmatic beams and line traps with a series of lenses to realize the rotational transformation with respect to the rotation angle of cylindrical lenses. It is shown that the spherical particles with diameters ranging from 5 μ m to 20 μ m could be trapped, aligned, and revolved in experiment. The periodical trapping forces generated by transformable line traps might open an alternative way to investigate the mechanical properties of soft particles and biological cells.