Optofluidic tunable manipulation of microparticles by integrating graded-index fiber taper with a microcavity

被引：36

作者：

Gong, Yuan ^{[1
,2
]}

Zhang, Chenlin ^{[1
]}

Liu, Qun-Feng ^{[1
]}

Wu, Yu ^{[1
]}

Wu, Huijuan ^{[1
]}

Rao, Yunjiang ^{[1
]}

Peng, Gang-Ding ^{[3
]}

机构：

[1] Univ Elect Sci & Technol China, Key Lab Opt Sensing & Commun, Minist Educ, Chengdu 611731, Peoples R China

[2] Univ Elect Sci & Technol China, Ctr Informat BioMed, Chengdu 611731, Peoples R China

[3] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia

来源：

OPTICS EXPRESS | 2015年 / 23卷 / 03期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

OPTICAL TWEEZERS; SINGLE CELLS;

D O I：

10.1364/OE.23.003762

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose and demonstrate optofluidic tunable manipulation of polystyrene microparticles based on the combination of a graded-index fiber (GIF) taper and a microcavity. The tunability on the manipulation length is experimentally explored by changing the balance between the optical force and the microfluidic flow force, as well as by tuning the focus of light emitting from the GIF taper via adjusting the length of an air microcavity. By optimizing the geometric shape of the GIF taper, as well as the flow rate and laser power, a manipulation length of 177 mu m is achieved, more than 4 times longer than the state-of-the-art optical fiber tweezers. This method has advantages of high flexibility, ease of fabrication and use, integration with microfluidics and has the potential for optofluidic sensing applications. (C) 2015 Optical Society of America

引用

页码：3762 / 3769

页数：8

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