Red blood cell in the field of a beam of optical tweezers

IF 0.9 4区 工程技术 Q3 Engineering Quantum Electronics Pub Date : 2022-01-01 DOI:10.1070/QEL17962
P. Ermolinskiy, A. Lugovtsov, A. Semenov, A. Priezzhev
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引用次数: 5

Abstract

We consider the effect of a tightly focused laser beam with a wavelength of 1064 nm and a power from 10 to 160 mW on red blood cells during their optical trapping with optical tweezers. It is found that the shape of a red blood cell, which alters after optical trapping, ceases to change when the trapping duration is less than 5 min and the laser beam power is less than 60 mW. At a beam power above 80 mW, the red blood cell begins to fold at a trapping duration of about 1 min, and at powers above 100 – 150 mW, the red blood cell membrane ruptures in 1 – 3 min after optical trapping. It is also found that with repeated short-term capture of a red blood cell in an optical trap, the deformation properties of the membrane change: it becomes more rigid. The obtained results are important both for understanding the mechanisms of interaction of a laser beam with red blood cells and for optimising the technique of optical experiments, especially for measuring the deformation properties of a membrane using optical tweezers.
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红血球场中的一束光镊
我们考虑了波长为1064 nm、功率为10 ~ 160 mW的紧密聚焦激光束在用光镊捕获红细胞时对红细胞的影响。结果表明,当光捕获时间小于5 min,激光束功率小于60 mW时,红细胞的形状不再发生变化。当光束功率大于80 mW时,红细胞在捕获时间约1分钟内开始折叠,当光束功率大于100 - 150 mW时,红细胞膜在光捕获后1 - 3分钟内破裂。研究还发现,在光学陷阱中反复短期捕获红细胞,膜的变形特性会发生变化:它变得更加坚硬。所获得的结果对于理解激光束与红细胞相互作用的机制和优化光学实验技术,特别是使用光镊测量膜的变形特性具有重要意义。
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来源期刊
Quantum Electronics
Quantum Electronics 工程技术-工程:电子与电气
CiteScore
3.00
自引率
11.10%
发文量
95
审稿时长
3-6 weeks
期刊介绍: Quantum Electronics covers the following principal headings Letters Lasers Active Media Interaction of Laser Radiation with Matter Laser Plasma Nonlinear Optical Phenomena Nanotechnologies Quantum Electronic Devices Optical Processing of Information Fiber and Integrated Optics Laser Applications in Technology and Metrology, Biology and Medicine.
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