Electrokinetic instability near charge-selective hydrophobic surfaces
The influence of the texture of a hydrophobic surface on the electro-osmotic slip of the second kind and the electrokinetic instability near charge selective surfaces (permselective membranes, electrodes, or systems of microchannels and nanochannels) is investigated theoretically using a simple mode...
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| Veröffentlicht in: | Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2014-07, Vol.90 (1), p.013001-013001, Article 013001 |
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| container_title | Physical review. E, Statistical, nonlinear, and soft matter physics |
| container_volume | 90 |
| creator | Shelistov, V S Demekhin, E A Ganchenko, G S |
| description | The influence of the texture of a hydrophobic surface on the electro-osmotic slip of the second kind and the electrokinetic instability near charge selective surfaces (permselective membranes, electrodes, or systems of microchannels and nanochannels) is investigated theoretically using a simple model based on the Rubinstein-Zaltzman approach. A simple formula is derived to evaluate the decrease in the instability threshold due to hydrophobicity. The study is complemented by numerical investigations both of linear and nonlinear instabilities near a hydrophobic membrane surface. Theory predicts a significant enhancement of the ion flux to the surface and shows a good qualitative agreement with the available experimental data. |
| doi_str_mv | 10.1103/PhysRevE.90.013001 |
| format | Article |
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| ispartof | Physical review. E, Statistical, nonlinear, and soft matter physics, 2014-07, Vol.90 (1), p.013001-013001, Article 013001 |
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| language | eng |
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| source | MEDLINE; American Physical Society Journals |
| subjects | Electricity Hydrophobic and Hydrophilic Interactions Models, Theoretical Motion Surface Properties |
| title | Electrokinetic instability near charge-selective hydrophobic surfaces |
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