scholarly journals Electric-double-layer structure close to the three-phase contact line in an electrolyte wetting a solid substrate

2012 ◽  
Vol 86 (2) ◽  
Author(s):  
Aaron Dörr ◽  
Steffen Hardt
Keyword(s):  
Double Layer ◽  
Contact Line ◽  
Electric Double Layer ◽  
Layer Structure ◽  
Solid Substrate ◽  
Phase Contact ◽  
Double Layer Structure ◽  
Three Phase ◽  
Electrolyte Wetting

Effect of Charge Distribution at the Three Phase Contact Line for an Electrolyte Drop

2013 ◽  
Author(s):  
Dibyo Sarkar ◽  
Siddhartha Das ◽  
Sushanta K. Mitra
Keyword(s):  
Velocity Field ◽  
Electrolyte Solution ◽  
Contact Line ◽  
Electric Double Layer ◽  
Charged Surface ◽  
Electrokinetic Transport ◽  
Phase Contact ◽  
Advective Flux ◽  
Three Phase ◽  
First Time

In this paper, we obtain the velocity field in a wedge in a Three Phase Contact Line (TPCL) in an electrolyte drop which is evaporating on a charged solid. Combination of an electrolyte solution and the charged surface leads to the formation of an Electric Double Layer (EDL), which in presence of the evaporation-triggered pressure-driven transport, leads to the generation of a streaming current that causes an electrokinetic transport. Hence, we analyze for the first time an electrokinetic transport in a charged wedge in presence of an evaporation-induced advective flux. Our results exhibit flow patterns that are distinctly different as compared to that of the case where there is no such electrokinetic transport and the problem is merely that of evaporation in a wedge.

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