[en] This manuscrit presents our experimental works about maintained vertical soap films. [en] The purpose of this thesis was to realize experiments on vertical soap films. We designed a setup which allows to maintain vertical soap films on large timescales. The thickness profiles of those films were characterized using an infrared absorption method. We then designed an elastic sensor in order to probe the surface tension profiles in our films. Simple mechanical considerations allowed us to draw a straightforward link between the thickness and surface tension profiles. We then realized experiments about the buoyancy in vertical soap films. The theoretical treatments of those experiments showed that the buoyancy in vertical soap films can equivalently be interpreted in terms of thickness differences or surface tension gradients present in the films.
Disciplines :
Physics
Author, co-author :
Adami, Nicolas ; Université de Liège - ULiège > Département de physique > Optofluidique
Language :
English
Title :
Surface tension and buoyancy in vertical soap films
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