Deep Undercooling of Aqueous Droplets on a Superhydrophobic Surface: The Specific Role of Cation Hydration
Alexandre M. Emelyanenko, Kirill A. Emelyanenko, Л. Б. Бойнович
Abstract
An extraordinary prolonged freezing delay was detected for the first time for deeply undercooled sessile droplets of aqueous solutions of alkali metal chlorides deposited onto a superhydrophobic surface. Accounting for the variation in the hydration energy of ions, their distribution in the vicinity of charged interfaces of solution/air and solution/superhydrophobic surface allows qualitative description of the observed ice nucleation kinetics and ionic specificity in freezing phenomena.
Topics & Concepts
SupercoolingNucleationAqueous solutionSurface energyMaterials scienceIonic bondingAlkali metalChemical physicsKineticsIce nucleusSurface (topology)IonChemical engineeringSurface tensionThermodynamicsChemistryPhysical chemistryComposite materialOrganic chemistryGeometryPhysicsQuantum mechanicsMathematicsEngineeringnanoparticles nucleation surface interactionsSurface Modification and SuperhydrophobicityIcing and De-icing Technologies