[Séparation de phases des liquides miscibles dans une centrifugeuse]
Nous prouvons qu'un mélange de liquides dans une phase homogène thermodynamiquement stable peut subir une transition de phase une fois centrifugé á une fréquence ω suffisamment élevée. Cette transition de phase est différente du cas habituel où deux liquides sont non-miscibles ou du cas où un processus lent de sédimentation d'un composant (par exemple un polymère) est accéléré par une centrifugation. Pour un mélange binaire, le couplage principal est dû à un terme
We show that a liquid mixture in the thermodynamically stable homogeneous phase can undergo a phase-separation transition when rotated at sufficiently high frequency ω. This phase-transition is different from the usual case where two liquids are immiscible or where the slow sedimentation process of one component (e.g. a polymer) is accelerated due to centrifugation. For a binary mixture, the main coupling is due to a term
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Mots-clés : Centrifugeuse, Transition des phases, Fréquence critique
Yoav Tsori 1 ; Ludwik Leibler 2
@article{CRPHYS_2007__8_7-8_955_0, author = {Yoav Tsori and Ludwik Leibler}, title = {Phase-separation of miscible liquids in a centrifuge}, journal = {Comptes Rendus. Physique}, pages = {955--960}, publisher = {Elsevier}, volume = {8}, number = {7-8}, year = {2007}, doi = {10.1016/j.crhy.2007.09.017}, language = {en}, }
Yoav Tsori; Ludwik Leibler. Phase-separation of miscible liquids in a centrifuge. Comptes Rendus. Physique, Neutron scattering: a comprehensive tool for condensed matter research, Volume 8 (2007) no. 7-8, pp. 955-960. doi : 10.1016/j.crhy.2007.09.017. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2007.09.017/
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