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SUMMARY:The destabilization of capillary rafts into armored droplets - Suz
 ie Protiere\, UPMC
DTSTART:20160225T113000Z
DTEND:20160225T123000Z
UID:TALK63451@talks.cam.ac.uk
CONTACT:Catherine Pearson
DESCRIPTION:Small objects trapped at an interface are very common in Natur
 e (insects walking on water\, ant\nrafts\, insects laying their eggs on wa
 ter\, bubbles or pollen at the water-air interface\, membranes...).\nThey 
 also find an application in industrial processes as they can act as stabil
 izing agents for\nemulsions or foams. Their study is therefore of practica
 l as well as fundamental importance. Here\nwe propose an original system w
 hich allows us to observe the self-assembly of particles into\ncapillary r
 afts at an oil-water interface based on the interplay of gravity and capil
 lary effects. When\nthe number of particles in the raft is large enough\, 
 the raft becomes unstable and sinks\, thus\nencapsulating the upper oil ph
 ase in water. I will first present how and why these rafts may sink and\nt
 hen show how this process allows to contain liquid as millimeter-size drop
 lets with a shell of\nparticles.
LOCATION:Open Plan Area\, BP Institute\, Madingley Rise CB3 0EZ
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