Electro-osmotic instability of concentration enrichment in curved geometries for an aqueous electrolyte

  title={Electro-osmotic instability of concentration enrichment in curved geometries for an aqueous electrolyte},
  author={Bingrui Xu and Zhibo Gu and Wei Liu and Peng Huo and Yueting Zhou and Shmuel M. Rubinstein and Martin Z. Bazant and Boris Zaltzman and Isaak Rubinstein and Daosheng Deng},
  journal={arXiv: Fluid Dynamics},
We report that an electro-osmotic instability of concentration enrichment in curved geometries for an aqueous electrolyte, as opposed to the well-known one, is initiated exclusively at the enriched interface (anode), rather than at the depleted one (cathode). For this instability, the limitation of unrealistically high material Peclet number in planar geometry is eliminated by the strong electric field arising from the line charge singularity. In a model setup of concentric circular electrodes… 
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