2008/05/05 by Ahmad Amjadi, R. Shirsavar, Amjadi, A. +5
Engineering · Materials Science · #Chemical Physics (physics.chem-ph) #Electrohydrodynamics and Fluid Dynamics #Electrowetting and Microfluidic Technologies #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Liquid Crystal Research Advancements #Materials Science (cond-mat.mtrl-sci) #Soft Condensed Matter (cond-mat.soft)
paper · pdf · doi:10.48550/arxiv.0805.0490
openalex publication_date 2008/05/05 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
It is well known that electro-hydrodynamical effects in freely suspended liquid films can flow the liquid. Here we report a purely electrically driven rotation in water and some other liquid suspended films with full control on the velocity and the chirality of the rotating vortices. The device, which is called ``film motor'', consists of a quasi two-dimensional electrolysis cell in an external in-plane electric field, crossing the mean electrolysis current density. If either the external field or the electrolysis voltage exceeds some threshold (while the other one is not zero), the liquid film begins to rotate. The device works perfectly with both DC and AC fields.