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Example of an total interaction force vs. separation. Double Layer (DL) equations. PB-equation Poisson-Boltzmann Linearized approximation Derjaguin approximation. continue.
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Double Layer (DL) equations • PB-equation Poisson-Boltzmann • Linearized approximation • Derjaguin approximation
continue • Weak overlap approximation, when the diffuse double layer is smaller than the distance between the objects (κ << D)
Your example deals with a situation like this Na+ Cl- 0.5 nm Cl- Cl- Na+ 50 nm Na+