@ARTICLE{10.21494/ISTE.OP.2019.0338, TITLE={Interfaces and critical fluids}, AUTHOR={Roger Prud’homme, }, JOURNAL={Thermodynamics of Interfaces and Fluid Mechanics}, VOLUME={3}, NUMBER={Issue 1}, YEAR={2019}, URL={http://openscience.fr/Interfaces-and-critical-fluids}, DOI={10.21494/ISTE.OP.2019.0338}, ISSN={2514-4642}, ABSTRACT={For pure substances, the liquid-vapor phase separation interface disappears at the critical point. This property and others have attracted the interest of many scientists. This article is an update of the text of the invited conference on Critical Fluids presented at a seminar of Saint-Gobain-Recherche Aubervilliers on June 14, 2007. Thermostatics is first presented; then successively the thermodynamics of fluids near the critical point; the piston effect, a specific mode of heat transfer; the expansion of a "drop" at the critical pressure; the behavior of a supercritical fluid pocket immersed in a high temperature environment; finally boiling near the critical point. It is partly a resumption of texts issued by various authors cited.}}