This work was partly supported by the Spanish Government (MINECO grant No. FIS2014-54101-P). JG-C acknowledges financial support from the “Asociación de Amigos de la Universidad de Navarra”.
Guadarrama-Cetina J, Mongruel A, González-Viñas W, Beysens D. Frost formation with salt. EPL (Europhysics Letters) 2015;110(5):56002.
The formation of frost in presence of salt (NaCl) crystal is experimentally investigated on a hydrophobic surface. It presents several remarkable features due to the interplay of salty-water saturation pressure evolution, initially lower than the saturation pressure of ice and water, and the percolating propagation of ice dendrites from defects throughout the supercooled water droplet pattern. In particular, it is remarkable that nucleation of supercooled water and/or ice is prevented around the salty drop in a region of inhibited condensation where the substrate remains dry. As condensation proceeds, salt concentration decreases to eventually become lower than ice's, allowing ice dendrites to hit the salty drop. Salty water then melts ice but eventually freezes as an effect of dilution.