TITLE

Electrohydrodynamic repulsion of droplets falling on an insulating substrate in an electric field

AUTHOR(S)
Kim, Bumjoo; Kim, Intae; Joo, Sang W.; Lim, Geunbae
PUB. DATE
November 2009
SOURCE
Applied Physics Letters;11/16/2009, Vol. 95 Issue 20, p204106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Control technique for charged droplets, named as electrohydrodynamic droplet repulsion (EDR), is reported. Charged droplets emitting from a capillary and falling down toward an insulating substrate are deflected from their intended impact point due to the like polarity of previously fallen droplets. The mechanism for this potentially critical phenomenon is explained by applying a theoretical model describing the balance between gravitational and Coulomb forces acting on a droplet. The parametric conditions for the EDR are subsequently presented.
ACCESSION #
45366457

 

Related Articles

  • Electrohydrodynamic flow of a dielectric liquid due to autonomous injection of charge by a needle electrode. Higuera, F. J. // Physics of Fluids;Jan2002, Vol. 14 Issue 1, p423 

    An analysis is presented of the creeping axisymmetric flow induced by Coulomb’s force in a dielectric liquid subject to autonomous unipolar injection of electric charge through a paraboloidal metallic electrode. A stationary flow and a I∝V[sup 3] current-voltage characteristic are...

  • Non-Linear Electrohydrodynamics in Microfluidic Devices. Jun Zeng // International Journal of Molecular Sciences;Mar2011, Vol. 12 Issue 3, p1633 

    Since the inception of microfluidics, the electric force has been exploited as one of the leading mechanisms for driving and controlling the movement of the operating fluid and the charged suspensions. Electric force has an intrinsic advantage in miniaturized devices. Because the electrodes are...

  • Formation of electrohydrodynamic flows in strongly nonuniform electric fields for two charge-formation modes. Stishkov, Yu.; Chirkov, V. // Technical Physics;Jan2012, Vol. 57 Issue 1, p1 

    The main features of the formation of electrohydrodynamic (EHD) flows are analyzed for two basic regimes of electrization of weakly conducting liquids: injection from the electrode surface and dissociation in the bulk. Analysis is carried out on the basis of the results of computer simulation of...

  • Unipolar space charge and convective current formation in an electrogasdynamic compressor. Bumagin, G.; Ovchinnikov, S.; Lapkova, A. // Chemical & Petroleum Engineering;Jan2009, Vol. 45 Issue 1/2, p22 

    It is shown that a corona discharge can be used to ionize the working medium and form a space charge in the convective current in EGD compressor stages. An explanation is given to a first approximation of the formation of a negative unipolar space charge and convective current in the external...

  • Study of electrohydrodynamic flows at a liquid–liquid phase interface. Tarantsev, K. // Chemical & Petroleum Engineering;Jan2010, Vol. 46 Issue 1/2, p64 

    Electrohydrodynamic flows are studied at a cyclohexane–castor oil interface. It is established that there is a series of electrohydrodynamic effects, depending on electrode polarity, electric field voltage and location of an electrode with respect to the phase interface, whose...

  • Electrohydrodynamic effects at a liquid-liquid interface using glass screens between electrodes. Tarantsev, K. // Chemical & Petroleum Engineering;Mar2010, Vol. 46 Issue 3/4, p130 

    Electrohydrodynamic effects are studied in model liquids at a phase interface using glass screens between electrodes. It is shown that a glass screen does not prevent the occurrence of electrohydrodynamic flows at the interface of flowing media, and this makes it possible to create the...

  • Electrohydrodynamic instabilities at interfaces subjected to alternating electric field. Gambhire, P.; Thaokar, R. M. // Physics of Fluids;Jun2010, Vol. 22 Issue 6, p064103 

    Instabilities at the interface of two immiscible fluids, either perfect or leaky dielectrics, subjected to alternating electric fields, is studied using a linear stability analysis in the limit of the electrode spacing being large compared to the wavelength of the perturbation. The Floquet...

  • Onset condition of pulsating cone-jet mode of electrohydrodynamic jetting for plane, hole, and pin type electrodes. Hyojun Kim; Junyoung Song; Jaewon Chung; Daehie Hong // Journal of Applied Physics;Nov2010, Vol. 108 Issue 10, p102804 

    In this work, electrohydrodynamic (EHD) jetting phenomena were observed for three different types of bottom electrode (plane, hole, pin) at constant back pressure condition of the reservoir. Especially, we have focused on the measurement and numerical prediction of the onset voltage for...

  • Chemically assembled double-dot single-electron transistor analyzed by the orthodox model considering offset charge. Shinya Kano; Kosuke Maeda; Daisuke Tanaka; Masanori Sakamoto; Toshiharu Teranishi; Yutaka Majima // Journal of Applied Physics;2015, Vol. 118 Issue 13, p134304-1 

    We present the analysis of chemically assembled double-dot single-electron transistors using orthodox model considering offset charges. First, we fabricate chemically assembled single-electron transistors (SETs) consisting of two Au nanoparticles between electroless Au-plated nanogap electrodes....

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics