Fundamental aspects of capillarity
Manipulation of droplets using the chromocapillary effect: innovative example of the conversion of light energy into mechanical work
Research and innovation REF: IN123 V1
Fundamental aspects of capillarity
Manipulation of droplets using the chromocapillary effect: innovative example of the conversion of light energy into mechanical work

Authors : Antoine DIGUET, Arnaud SAINT-JALMES, Damien BAIGL

Publication date: January 10, 2011 | Lire en français

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2. Fundamental aspects of capillarity

2.1 Surface tension

Any "free" liquid surface (i.e. in contact with a gas and free to deform) is characterized by a surface tension that opposes its deformations and tends to minimize the surface in contact with its environment . From a microscopic point of view, molecules within the liquid benefit from attractive interactions with all their neighbors. On the other hand, at the fluid surface, they lose on average half of these cohesive...

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