Electro‐osmosis experiments at the germanium/electrolyte interface

Measurements of the electro‐osmotic transport of liquid in the germanium (powder) electrolyte solution were carried out. The results can be explained by a theory, which is given by Verwey and Payens, which was originally proposed for surface layers consisting of weakly ionized fatty acids. In the case of germanium it should be assumed that a weakly ionized germanic acid is present at the surface, giving the surface a negative charge. The experiments almost break down when p‐type Ge is used. This can be explained by potential current characteristics using p‐type or n‐type Ge as the anode.