Adsorption–strain coupling at solid surfaces

Publication date: June 2019Source: Current Opinion in Chemical Engineering, Volume 24Author(s): Jörg WeissmüllerThis brief review inspects how chemistry or electrochemistry at a solid–vapor or solid–electrolyte interface couple to the mechanics of the solid. Emphasis is on the complementarity of two at first sight unrelated phenomena: on the one hand, adsorption or electric charging change the local tangential stresses in the solid surface; on the other hand, a tangential strain of the surface changes the adsorption enthalpy and the chemical or electric potential. One and the same materials parameter underlies these phenomena. The phenomenology and the Maxwell relations behind that observation are discussed and the underlying microscopic mechanisms addressed, with particular attention to symmetry and sign of the coupling coefficients.Graphical abstract

Source: Current Opinion in Chemical Engineering - March 4, 2019 Category: Chemistry Source Type: research