Oscillation and collective conveyance of water-in-oil droplets by microfluidic bolus flow

Takuya Ohmura, Masatoshi Ichikawa, Ken Ichiro Kamei, Yusuke T. Maeda

研究成果: ジャーナルへの寄稿学術誌査読

6 被引用数 (Scopus)

抄録

Microfluidic techniques have been extensively developed to realize micro-total analysis systems in a small chip. For microanalysis, electro-magnetic forces have generally been utilized for the trapping of objects, but hydrodynamics has been little explored despite its relevance to pattern formation. Here, we report that water-in-oil (W/O) droplets can be transported in the grid of an array of other large W/O droplets. As each droplet approaches an interspace of the large droplet array, while exhibiting persistent back-and-forth motion, it is conveyed at a velocity equal to the droplet array. We confirm the appearance of closed streamlines in a numerical simulation, suggesting that a vortex-like stream is involved in trapping the droplet. Furthermore, more than one droplet is also conveyed as an ordered cluster with dynamic reposition.

本文言語英語
論文番号074102
ジャーナルApplied Physics Letters
107
7
DOI
出版ステータス出版済み - 8月 17 2015
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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