Universality in early-stage growth of phase-separating domains near the critical point - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Année : 2008

Universality in early-stage growth of phase-separating domains near the critical point

Résumé

We present both the experimental and computational methods and results of phase-separating experiments performed with sulfur hexafluoride (SF6) close to its critical density. These experiments were performed in microgravity to suppress buoyancy and convection-driven effects. Phase separation under reduced gravity is analyzed for both 0.3 mK and 3.6 mK temperature quenches in order to derive the early-stage growth law. We found a 1/3 growth law for early stages of phase separation for a volume fraction of minority domains of 50%. Our findings support the hypothesis of a crossover between Brownian motion and hydrodynamic effects in the early stages of phase separation. The temperature inside the bulk of the pure fluid was estimated using a proposed histogram method. Our histogram method allowed temperature estimation below thermistors' sensitivity and detected small temperature variations inside the bulk of the pure fluid.
Fichier principal
Vignette du fichier
2008-086.pdf (920.2 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-00290563 , version 1 (19-02-2024)

Identifiants

Citer

Ana Oprisan, Sorinel Adrian Oprisan, John Hegseth, Yves Garrabos, Carole Lecoutre-Chabot, et al.. Universality in early-stage growth of phase-separating domains near the critical point. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2008, 77 (5), 051118 (13 p.). ⟨10.1103/PhysRevE.77.051118⟩. ⟨hal-00290563⟩

Collections

CNRS ICMCB
38 Consultations
3 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More