AC electrokinetic pumping on symmetric electrode arrays |
| |
Authors: | Hukun Yang Hongyuan Jiang Antonio Ramos Pablo García-Sánchez |
| |
Affiliation: | 1. School of Mechatronics Engineering, Harbin Institute of Technology, 150001, Harbin, People’s Republic of China 2. Departamento de Electrónica y Electromagnetismo, Facultad de Física, Universidad de Sevilla, Avenida Reina Mercedes s/n, 41012, Sevilla, Spain 3. Physics of Complex Fluids, Faculty of Science and Technology, MESA+ Institute, University of Twente, PO Box 217, 7500 AE, Enschede, The Netherlands
|
| |
Abstract: | AC electro-osmotic (ACEO) pumping is experimentally demonstrated on a symmetric gold electrode array. Using asymmetric connection
of electrodes to the applied AC voltage, spatial asymmetry along the array is created, which produces unidirectional flow
of electrolyte. An aqueous solution of 100 μM KCl is selected as the pumping fluid. The liquid velocity obtained as a function
of voltage and frequency is compared to that generated using travelling-wave electroosmosis (TWEO) with the same electrode
array. The expected velocities from the linear electrokinetic models of ACEO and TWEO are computed numerically. The comparison
shows that TWEO generates greater velocity amplitudes and the streamlines are smoother than those generated by ACEO. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|