Stabilization of the Concentration of a Dissolved Matter in Droplet Clusters

The previously developed laboratory technique is used to perform a series of experiments to study the effect of enhanced concentration of matters dissolved in water on the condensation-induced growth and equilibrium parameters of droplets in levitating droplet clusters during their stabilization by the combined action of infrared heating and the dissolution of common salt in a water layer under the cluster. The experiments demonstrate that the equilibrium concentration of an admixture in cluster droplets can be reached even for dissolved substances that most strongly prevent the achievement of equilibrium. For the first time, experiments were conducted for mixtures of solutions of different substances. In certain cases, a non-additive effect of the solution components on droplet evaporation and stabilization was observable. The results obtained show the complosite interaction of certain aqueous solutions in small droplets, highlighting the importance of employing alternative methods and technical means in the experimental research.