Electrostatic Water Droplet Formation in Oil in Microchannel System

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Author(s)

Abstract

We have investigated that a droplet-based microreactor system, such as Lab-on-a-chip, especially for using no mechanical pump. In this paper, a method to produce water droplets in oil electrically was experimented. Electrostatic atomization was studied to inject charged water droplets into oil in a microchannel system. When a negative DC voltage (–7 kV) was applied to Milli-Q water phase of microchannel, Taylor cone was formed at an interface between the water and rapeseed oil, and the water droplets were injected into oil. A diameter of the produced droplets was characterized to 10.7 ± 3.8 <I>μ</I>m. When Milli-Q water replaced to 50% glycerol that was 6 times higher viscous liquid, the produced droplets were with 6.7 ± 2 <I>μ</I>m. Since the electrostatic atomization, in principle, produces charged droplets into oil, the produced droplets will be manipulated using electric force.

Journal

  • JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

    JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 38(11), 918-921, 2005-11-01

    The Society of Chemical Engineers, Japan

References:  11

Codes

  • NII Article ID (NAID)
    130000019429
  • NII NACSIS-CAT ID (NCID)
    AA00709658
  • Text Lang
    ENG
  • Article Type
    SHO
  • ISSN
    00219592
  • NDL Article ID
    7716793
  • NDL Source Classification
    ZP1(科学技術--化学・化学工業)
  • NDL Call No.
    Z53-R395
  • Data Source
    CJP  NDL  J-STAGE 
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