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
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.
引用
收藏
页数:5
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