title: Theory of the liquid film motor.
abstract: The liquid film motor is a freely suspended liquid film placed between two capacitively coupled plates that rotates when an electric current is passed through it. Here we propose a theory for its rotation mechanism based on thin film electroconvection. The capacitively coupled plates induce free charges on the surfaces of the film, and the electric field on the film exerts a force that induces rotation. Results of the proposed theory and simulation are in good agreement with the experiments in different properties of the liquid film motor.
authors.affiliation: Physics Department, Sharif University of Technology, Tehran, Iran.
authors.forename: M S
authors.initials: MS
authors.lastname: Feiz
authors.affiliation: Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran.
authors.forename: R M
authors.initials: RM
authors.lastname: Namin
authors.affiliation: Physics Department, Sharif University of Technology, Tehran, Iran.
authors.forename: A
authors.initials: A
authors.lastname: Amjadi