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Hollow shells as organic probes in velocimetry
MSC : M-A Guedeau-Boudeville, S. Lerouge
Latex beads, successively covered by positively then negatively charged polymers, lead, after latex matrix dissolution, to the creation of hollow, spherical and transparent shells, their rigidity being tuned by the number of layers. These shells are matched in index with water. They are synthezised to replace silica beads usually used as ultrasonic probes to determine the velocity profiles in the flow of giant micelles solutions. Indeed, mineral silica beads have the major disadvantage to exhibit a large difference of index with water that prevents flow birefringence measurements. Furthermore, thanks to a fluorescent dying, these organic shells would be used with another technique, the Particle Image Velocimetry (PIV), allowing simultaneous flow birefringence studies.
Nom des membres actuels ou anciens
GUEDEAU-BOUDEVILLE Marie-Alice, LEROUGE Sandra
General keyword
Teams
Keywords
- Flow of Complex Fluids
- Surfactants, membranes, self-assembling
- Polymers, supramolecular polymers, polyelectrolytes, cytoskeleton
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