Electro-osmotic instability of concentration enrichment in curved geometries for an aqueous electrolyte
Bingrui Xu, Zhibo Gu, Wei Liu, Peng Huo, Yueting Zhou, S. M. Rubinstein, M. Z. Bazant, B. Zaltzman, I. Rubinstein, Daosheng Deng
Abstract
The critical Peclet number for an electro-osmotic instability is reduced in inverse proportion to the geometrically increased electric fields due to curvature of the electrode. This electro-osmotic instability, in contrast to the well-known one, appears exclusively at the enriched interface (anode), rather than at the depleted one (cathode).
Topics & Concepts
InstabilityCurvaturePéclet numberAqueous solutionElectrolyteMaterials scienceChemistryInverseThermodynamicsWork (physics)MechanicsElectric fieldMeasure (data warehouse)Contrast (vision)Analytical Chemistry (journal)Field (mathematics)Intensity (physics)Interface (matter)Yield (engineering)Electrostatics and Colloid InteractionsSpectroscopy and Quantum Chemical StudiesMembrane-based Ion Separation Techniques