Fig. 3: Warming, slow cooling and fast cooling.
From: Near-critical dark opalescence in out-of-equilibrium SF6
Concentric circles were put behind the back window of the chamber to show the evolution of transparency, with chamber in the ∇T ↓↑ ∇P configuration (See Supplementary Movies 1 and 2 (See Supplementary Materials for details)). a Evolution across the critical temperature during a warming process from T < Tc to T > Tc. The phase separation fades away gradually, and the fluid remains transparent. b A slow cooling process in the reverse direction (from T > Tc to T < Tc) reveals opacity near T ~ Tc. Despite turbidity, circles remain visible. c A dark band shows up during a fast cooling process (a quench across Tc). Fast and slow cooling frames sequences are reported for the other two configurations in Supplementary Movies 3, 4 (∇P ⊥ ∇T) and Supplementary Movies 5, 6 (∇P ↓↓ ∇T) (See Supplementary Materials for details). Details on the Supplementary movies can be found in the Supplementary Note 3.
