Scalable Generation of Strictly Monodisperse Droplets by Transverse Electrohydrodynamic Excitations

    Authors

    H. X. Duan; W. W. Yang; C. Li; B. Lojewski;W. W. Deng

    Comments

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    Abbreviated Journal Title

    Aerosol Sci. Technol.

    Keywords

    LIQUID JET; GROWTH; Engineering, Chemical; Engineering, Mechanical; Environmental Sciences; Meteorology & Atmospheric Sciences

    Abstract

    We report a scalable approach to generate strictly monodisperse microdroplets by introducing transverse periodic perturbations on microliquid jets. The fringe field of a thin capacitor, driven by sinusoidal signals, induces periodic electrohydrodynamic (EHD) stress and chops the liquid jet at precise and adjustable intervals. When the driving signal is near the 50% of the Rayleigh frequency, liquid jets exhibit highly ordered breakup. We have shown that for the same jet diameter, the monodispersed droplet diameter can be changed by a factor of 1.75, corresponding to more than five times in change of droplet volume. Further, we demonstrate the scale-up of this approach by chopping multiple jets using a single set of EHD exciters.

    Journal Title

    Aerosol Science and Technology

    Volume

    47

    Issue/Number

    11

    Publication Date

    1-1-2013

    Document Type

    Article

    Language

    English

    First Page

    1174

    Last Page

    1179

    WOS Identifier

    WOS:000324459700002

    ISSN

    0278-6826

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