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Lateral migration of dual droplet trains in a double spiral microchannel
Xue CD; Chen XD; Liu C; Hu GQ(胡国庆); Hu, GQ (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Beijing Key Lab Engn Construct & Mechanobiol, Inst Mech, Beijing 100190, Peoples R China.; Hu, GQ (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China.
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
2016
Volume59Issue:7Pages:674711
ISSN1674-7348
AbstractMicrofluidic droplets have emerged as novel platforms for chemical and biological applications. Manipulation of droplets has thus attracted increasing attention. Different from solid particles, deformable droplets cannot be efficiently controlled by inertia-driven approaches. Here, we report a study on the lateral migration of dual droplet trains in a double spiral microchannel at low Reynolds numbers. The dominant driving mechanism is elucidated as wall effect originated from the droplet deformation. Three types of migration modes are observed with varying Reynolds numbers and the size-dependent mode is intensively investigated. We obtain empirical formulas by relating the migration to Reynolds numbers and droplet sizes. The effect of droplet deformability on the migration and the detailed migration behavior along the double spiral channel are discussed. Numerical simulations are also performed and yielded in qualitative agreement with the experiments. This proposed low Re approach based on lateral migration could be a promising alternative to existing inertia-driven approaches especially concerning deformable entities and susceptible bio-particles.
KeywordMicrofluidics Droplet Migration Double Spiral Microchannel
DOI10.1007/s11433-016-0115-1
URL查看原文
Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000384212100005
WOS Keywordmicrofluidics ; droplet ; migration ; double spiral microchannel
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding OrganizationThis work was supported by the National Natural Science Foundation of China (Grant Nos. 11572334, 11272321 and 11402274).
DepartmentLNM微纳米流体力学
Classification二类
RankingTrue
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59719
Collection非线性力学国家重点实验室
Corresponding AuthorHu, GQ (reprint author), Chinese Acad Sci, State Key Lab Nonlinear Mech, Beijing Key Lab Engn Construct & Mechanobiol, Inst Mech, Beijing 100190, Peoples R China.; Hu, GQ (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 101408, Peoples R China.
Recommended Citation
GB/T 7714
Xue CD,Chen XD,Liu C,et al. Lateral migration of dual droplet trains in a double spiral microchannel[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2016,59(7):674711.
APA Xue CD,Chen XD,Liu C,胡国庆,Hu, GQ ,&Hu, GQ .(2016).Lateral migration of dual droplet trains in a double spiral microchannel.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,59(7),674711.
MLA Xue CD,et al."Lateral migration of dual droplet trains in a double spiral microchannel".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 59.7(2016):674711.
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