Iago Pereiro, Anna Fomitcheva Kartchenko, et al.
Analyst
We experimentally demonstrate the phenomenon of electroosmotic dipole flow that occurs around a localized surface charge region under the application of an external electric field in a Hele-Shaw cell. We use localized deposition of polyelectrolytes to create well-controlled surface charge variations, and show that, for a disk-shaped spot, the internal pressure distribution that arises results in uniform flow within the spot and dipole flow around it. We further demonstrate the superposition of surface charge spots to create complex flow patterns, without the use of physical walls.
Iago Pereiro, Anna Fomitcheva Kartchenko, et al.
Analyst
Ali Oskooei, Govind V. Kaigala
Sensors and Actuators, B: Chemical
Federico Paratore, Govind V. Kaigala, et al.
MicroTAS 2017
Vesna Bacheva, Federico Paratore, et al.
MicroTAS 2019