I was really puzzled by the zeta potential image. On the figure, we can see three potentials that are hard to distinguish one from another: the Stern potential, zeta potential and surface potential. I have tried to understand the differences between them (going beyond a few words, i.e. with equations), but I cannot find any reference I could easily understand (with equations for instance). Wikipedia is not very helpful, and so is the reference you provided. Any good link or explanation for me? Thanks in advance!
Cheers!
Let me get on the internet as see what I can find. I will revert once I find a better reference to solve the puzzle.
Thanks very much. It is really appreciated.