Light-Induced Agglomeration and Diffusion of Different Particles with Optical Tweezers

The dynamic process of light-induced agglomeration of carbon nanotubes （CNTs）, C60 and Escherichia coli （E.eoli） in aqueous solutions is demonstrated using an optical tweezers system. Based on the results, the diameter of the agglomerated region and the agglomeration rate increase with the increasin...

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Published inChinese physics letters Vol. 27; no. 9; pp. 221 - 224
Main Author 李雪璁 孙秀冬 刘鸿鹏 张建隆
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.09.2010
Subjects
Agglomeration
Buckminsterfullerene
Diffusion
Dynamical systems
Dynamics
Escherichia coli
Fullerenes
Nanoparticles
光镊系统
大肠杆菌
扩散过程
碳纳米管
纳米粒子
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Summary:The dynamic process of light-induced agglomeration of carbon nanotubes （CNTs）, C60 and Escherichia coli （E.eoli） in aqueous solutions is demonstrated using an optical tweezers system. Based on the results, the diameter of the agglomerated region and the agglomeration rate increase with the increasing laser power. After the saturation-stable period, CNTs diffuse completely, C60 clusters only diffuse partially, and E. coli never diffuses in the agglomeration region. Theoretical analyses show that the molecular polarization and thermal diffusion of particles play crucial roles in the diffusion process. The and sort nanoparticles. results indicate the possibility of using light to aggregate
Bibliography:TB34
11-1959/O4
O211.6
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/27/9/098101