The effects of surface texturing on the electrohydro-dynamic lubrication with thin double layers are considered for the sliding of one charged body past another in an electrolyte solution. The averaged Reynolds type equation as well as the related flow factors is then derived by the flow factor method. The couple effects of surface roughness and EDL appear on flow factors are discussed. The hydrodynamic pressure generated by the viscous force and electrokinetic force are discussed for an 1-D slider bearing.

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