Impact of electric fields on the speed of contact line in vertical deposition of diluted colloids |
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| Authors: | M Giuliani M Pichumani W González-Viñas |
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| Institution: | 1.Dept. of Physics and Applied Math., University of Navarra. Irunlarrea s/n,Pamplona,Spain |
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| Abstract: | We report experimental results on the influence of electric fields on the contact line dynamics of the vertical deposition
of water-based diluted colloidal suspensions. We measure the speed of macroscopically receding contact line for different
initial concentrations and applied voltages. We explain the observed behavior via the electrophoretic effect in the region
near the contact line. The electrophoretic effect induces a concentration gradient along the direction of the applied field
which influences the morphology of the dried deposit of colloidal particles. Thus the applied field has an effect on the receding
contact line through morphological formation and its transition. |
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