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Number of hours
Lectures : 6.0
Tutorials : 6.0
ECTS : 1.0
Introduction to the physical chemistry of surfaces and interfaces
General presentation of the structure of surfaces and interfaces. Definition of surface and interface energy. Equilibrium condition of systems with interfaces. Application to various physical and chemical processes involving surfaces and interfaces : adsorption ; segregation ; equilibrium shape of a crystal ; wetting and adhesion at solid/liquid interfaces.
I - Introduction to surfaces, interfaces and interphases . Surface defects, adsorption. Approach of the energy associated with the surface formation. Interfaces, interphases.
II - Mechanical and physicochemical equilibrium. Surface tension and surface energy. Mechanical equilibrium of a heterogeneous system. Evolution of such systems. Equilibrium shape of a crystal. Interfacial energy and segregation in binary systems.
III - Wetting and adhesion. Fundamental equations of wetting. Work of adhesion - adherence. Work of cohesion and immersion. Capillary rise. Wetting, de-wetting, non reactive and reactive wetting. Surface cleaning.