Design of Bessel Beam Optical Tweezers for Single Particle Study

被引：0
|
作者：
Zhao W. [1 ]
Cai C. [1 ]
Zhao G. [1 ]
Zhao C. [1 ]
机构：
[1] Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing
来源：
Beijing Daxue Xuebao (Ziran Kexue Ban)/Acta Scientiarum Naturalium Universitatis Pekinensis | 2020年 / 56卷 / 06期
关键词：
Bessel beam; Optical tweezers; Single aerosol particle;
D O I：
10.13209/j.0479-8023.2020.090
中图分类号：
学科分类号：
摘要：
Bessel beam optical tweezer is built for particle measurement. An axicon is used to generate Bessel beam. The trapped single aerosol particle is stably levitated by optical force exerted by Bessel beam and drag force exerted by the counter gas flow. In combination with light signal scattered by the levitated aerosol particle, the diameter and the refractive index can be measured. Physicochemical properties of aerosol, such as hygroscopicity, volatility, and the refractive index, could be studied under different environmental conditions with this system. © 2020 Peking University.
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页码：1031 / 1037
页数：6
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