Related Experiment Video
Updated: Jul 8, 2026

Microtensiometer for Confocal Microscopy Visualization of Dynamic Interfaces
Published on: September 9, 2022
What is the origin of irregular current oscillations in the transfer of ionic surfactants across liquid/liquid
Leonid I Daikhin1, Michael Urbakh
1School of Chemistry, Tel Aviv University, Ramat Aviv, 69978 Tel Aviv, Israel.
Abstract:
We propose a kinetic description of ionic surfactant transfer across an interface between two immiscible electrolyte solutions that includes interfacial processes (charging of the interface, adsorption, and direct ion transfer) as well as characteristics of the electrical circuit. Our model demonstrates that experimentally observed irregular current oscillations may stem from a dynamical instability of the system which is induced by the interplay between a potential-dependent adsorption and direct ionic transfer across the interface. Calculated temporal patterns exhibit dynamical features which agree well with the experimental observations; in particular, we found that current anomalies occur in a vicinity of the standard ion transfer potential, and the presence of the irregular current oscillations depends on the rate and direction of potential scans.
More Related Videos
06:31Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device
Published on: March 18, 2020
06:26Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
Published on: May 15, 2017
Related Concept Videos
Surface Active Agents
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model
Micelles
Intermolecular Forces
Intermolecular Forces
Interfacial Electrochemical Methods: Overview