Trapping of nanoparticles in a liquid by laser-induced microbubbles

被引：20
作者：
Yusupov, V. I. [1 ]
Tsypina, S. I. [2 ]
Bagratashvili, V. N. [2 ]
机构：
[1] Russian Acad Sci, Far Eastern Branch, VI Ilichev Pacific Oceanol Inst, Vladivostok 690041, Russia
[2] Russian Acad Sci, Inst Laser & Informat Technol, Troitsk 142190, Russia
来源：
LASER PHYSICS LETTERS | 2014年 / 11卷 / 11期
基金：
俄罗斯基础研究基金会;
关键词：
nanoparticles; colloid; microbubble; laser trapping; Marangoni convection; surface; OPTICAL TWEEZERS; PARTICLES; BUBBLE; FIELD; MANIPULATION; FORCE; DNA; MICROMANIPULATION; HYDRODYNAMICS; LIGHT;
D O I：
10.1088/1612-2011/11/11/116001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Nanoparticles a few nanometers in diameter contained in a colloidal solution can be captured by the surface of a microbubble produced by a well-focused beam of a continuous wave visible laser. The concentration of the nanoparticles on the surface of the microbubble is found to gradually increase during the course of irradiation. The mechanism of such a trapping is associated with the laser-induced Marangoni convection developing in the vicinity of the microbubble as a result of the temperature gradient obtained at its surface.
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页数：5
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