Dynamic origin of the surface conduction response in adsorption-induced electrical processes

The variation of conductance during sorption in a variety of different materials exhibits a similar response. However, the detailed understanding of the surface conduction during adsorption still has to be achieved. A simple theoretical framework is presented here, in which we were able to model adsorption-induced conductance changes and obtain the well-known shape of the characteristics. Our model calculations revealed that the unexpected similarity of the response is the consequence of the dynamic nature of adsorption processes in real systems.