title: Grand potential in thermodynamics of solid bodies and surfaces.
abstract: Using the chemical potential of a solid in a dissolved state or the corresponding component of the chemical potential tensor at equilibrium with the solution, a new concept of grand thermodynamic potential for solids has been suggested. This allows generalizing the definition of Gibbs' quantity sigma (surface work often called the solid-fluid interfacial free energy) at a planar surface as an excess grand thermodynamic potential per unit surface area that (1) does not depend on the dividing surface location and (2) is common for fluids and solids.
authors.affiliation: Mendeleev Center, St. Petersburg State University, St. Petersburg 199034, Russia.
authors.forename: A I
authors.initials: AI
authors.lastname: Rusanov
authors.forename: A K
authors.initials: AK
authors.lastname: Shchekin
authors.forename: D V
authors.initials: DV
authors.lastname: Tatyanenko