Oscillatory motion of water droplets in kerosene above co-planar electrodes in microfluidic chips

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F14%3A43897817" target="_blank" >RIV/60461373:22340/14:43897817 - isvavai.cz</a>

Alternative codes found

RIV/49777513:23640/14:43922269

Result on the web

<a href="http://scitation.aip.org/content/aip/journal/adva/4/6/10.1063/1.4881675" target="_blank" >http://scitation.aip.org/content/aip/journal/adva/4/6/10.1063/1.4881675</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4881675" target="_blank" >10.1063/1.4881675</a>

Result language

angličtina

Original language name

Oscillatory motion of water droplets in kerosene above co-planar electrodes in microfluidic chips

Original language description

We experimentally observed oscillatory motion of water droplets in microfluidic systems with coplanar microelectrodes under imposed DC electric fields. Two-electrode arrangement with no bipolar electrode and eight-electrode arrangement with six bipolar microelectrodes were investigated. Kerosene was used as the continuous phase. We studied the dependences of the oscillation frequency on the electric field intensity and ionic strength of the water phase. We found that the electric field dependence is strongly nonlinear and discussed possible reasons of this phenomenon, e. g., the droplet deformation at electrode edges that affects the charge transfer between the electrode and droplet or the interplay between the Coulomb force on free charge and the dielectrophoretic force. Our experiments further revealed that the oscillation frequency decreases with growing salt concentration in the two-electrode arrangement, but increases in the eight-electrode arrangement, which was attributed to sur

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BK - Liquid mechanics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

AIP Advances

ISSN

2158-3226

e-ISSN

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Volume of the periodical

4

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

14

Pages from-to

"067103-1"-"067103-14"

UT code for WoS article

000338995700004

EID of the result in the Scopus database

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