Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session R18: Electric Field Effects
1:50 PM–3:34 PM,
Monday, November 20, 2023
Room: 146A
Chair: Vikky Anand, Indian Institute of Technology Jodhpur
Abstract: R18.00006 : Effect of Variable Permittivity on the Electrophoretic Mobility of a Droplet*
2:55 PM–3:08 PM
Presenter:
Mansoureh Rashidi
(university of Calgary)
Author:
Mansoureh Rashidi
(university of Calgary)
Collaboration:
Mansoureh Rashidi, Amirreza Panahi, Ahmadreza Pishevar, Anne Benneker
A numerical model describing an oil droplet containing dissolved ions in an electrolyte solution was developed. The formation of an EDL inside the droplet as a result of the interfacial charges was considered, which led to the emergence of a body force inside the droplet in addition to the external body force on the droplet, influencing the droplet mobility. The numerical simulations revealed that accounting for variable permittivity inside the EDL reduced the EDL thickness compared to assuming constant permittivity. Interestingly, depending on the ionic concentration within the droplet and the magnitude of the inner body force, the direction of droplet motion could deviate from its surface charge-based prediction. These findings have implications for various applications, including soil remediation and ion detection in chemistry.
*Canada First Research Excellence Fund (CFREF)
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700