Résumé : |
There have been many reports of super-hydrophobic coatings based on the natural, nonwetting properties associated with the lotus leaf. These systems are basedon microtextured surfaces that create a stable air-liquid interface, and under low humidity conditions have shown promise for the prevention of ice formation, even at very low temperatures. However, in high humidity, the textured surface provides numerous nucleation sites for condensing droplets. Thus at freezing temperatures, they can induce the rapid formation of frost that adheres more strongly within the topographical features that ice on a smooth surface. |