The destabilization of capillary rafts into armored droplets

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• Suzie Protiere, UPMC
• Thursday 25 February 2016, 11:30-12:30
• Open Plan Area, BP Institute, Madingley Rise CB3 0EZ.

If you have a question about this talk, please contact Catherine Pearson.

Small objects trapped at an interface are very common in Nature (insects walking on water, ant rafts, insects laying their eggs on water, bubbles or pollen at the water-air interface, membranes…). They also find an application in industrial processes as they can act as stabilizing agents for emulsions or foams. Their study is therefore of practical as well as fundamental importance. Here we propose an original system which allows us to observe the self-assembly of particles into capillary rafts at an oil-water interface based on the interplay of gravity and capillary effects. When the number of particles in the raft is large enough, the raft becomes unstable and sinks, thus encapsulating the upper oil phase in water. I will first present how and why these rafts may sink and then show how this process allows to contain liquid as millimeter-size droplets with a shell of particles.

This talk is part of the Institute for Energy and Environmental Flows (IEEF) series.

This talk is included in these lists:

• All Talks (aka the CURE list)
• Cambridge Energy Seminars
• Department of Earth Sciences seminars
• Institute for Energy and Environmental Flows (IEEF)
• NanoDTC Energy Materials Talks
• Open Plan Area, BP Institute, Madingley Rise CB3 0EZ
• history
• ps635

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