angle de contact est un goniomètre DSA 100 (Krüss) La mesure de l'angle se fait à partir d'images capturées par un PC via une caméra. Le logiciel Visiodrop permet de numériser le contour de la goutte par traitement des images. Il détermine ensuite l'angle de contact grâce à des méthodes d'interpolation. Le logiciel utilise les méthodes d'interpolation par polynôme ou par arcs de cercles pour déterminer l ,
angle de contact permet d'accéder à plusieurs informations : En utilisant l'eau comme liquide, les propriétés hydrophobes (grand angle, faibles énergies de surface) ou hydrophiles (petits angles, grandes énergies de surface ,
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