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Dresden 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...

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DY: Fachverband Dynamik und Statistische Physik

DY 41: Droplets and Wetting (joint session DY/CPP)

DY 41.5: Vortrag

Mittwoch, 18. März 2020, 16:00–16:15, ZEU 147

A bite of cotton candy physics — •Stephane Dorbolo3, Floriane Weyer1, Nicolas Vandewalle1, and Alexandre Delory21GRASP, UR-CESAM, Departement de Physique, Universite de Liege, Belgium — 2ESPCI, Paris, France — 3FNRS, GRASP, UR-CESAM, Departement de Physique, Universite de Liege, Belgium

A cotton candy is made of kilometers of sugar fibers. These thin fibers are easily and quickly soluble into water. The system is generic and found applications in soldering and networks of nano-fibers. First, the wettability of the sugar is measured. The problem is complex since the sessile droplet modifies the substrate made of sugar. Second, the interactions of a sugar fiber with the humidity present in the air and with a single droplet are discussed through experimental investigations. Finally, a model is presented to describe the motion of a droplet along one single fiber.

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