Electric field driven addressing of oil in water droplets in the presence of gradients of ionic and nonionic surfactants

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F15%3A43900203" target="_blank" >RIV/60461373:22340/15:43900203 - isvavai.cz</a>
Result on the web
<a href="http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7356764&punumber%3D7339353%26filter%3DAND%28p_IS_Number%3A7356738%29%26pageNumber%3D2" target="_blank" >http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=7356764&punumber%3D7339353%26filter%3DAND%28p_IS_Number%3A7356738%29%26pageNumber%3D2</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1109/IAS.2015.7356764" target="_blank" >10.1109/IAS.2015.7356764</a>

Result language
angličtina
Original language name
Electric field driven addressing of oil in water droplets in the presence of gradients of ionic and nonionic surfactants
Original language description
We deal with addressing of dielectric kerosene droplets dispersed in water by DC electric field. Planar microfluidic platform with a central compartment and two electrode chambers was fabricated. The platform enables the formation of concentration gradients of cationic, anionic or nonionic surfactants. We show that a kerosene droplet always moves in the direction from a surfactant reservoir due to the Marangoni phenomenon. The release of ionic surfactants can be well controlled by imposed electric field. Once surfactant molecules reach the surface of water phase, the Marangoni phenomenon pulls the kerosene droplet in the direction from the surfactant reservoir. So the observed mechanism does not rely on the classical electrophoretic migration of charged macroscopic objects - droplets. As the dependence of droplet motion on the absolute value of electric field strength is linear, apparent droplet mobilities were evaluated. Finally we discuss the use of the observed phenomenon for drople
Czech name
—
Czech description
—

Project
<a href="/en/project/GA14-01781S" target="_blank" >GA14-01781S: Investigation on fluid mechanics in smart microsystems driven by electric fields</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
IEEE Industry Applications Society Annual Meeting
ISBN
978-1-4799-8393-3
ISSN
0197-2618
e-ISSN
—
Number of pages
7
Pages from-to
1-7
Publisher name
IEEE
Place of publication
New York
Event location
Addison
Event date
Oct 18, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000370974600026

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