Fig. 2: Multiple possible internal energy states of a metafluid.
From: A metafluid with multistable density and internal energy states
The figure presents analytical results for Utot/U0, vs. pressure, p/patm, where U0 = Φpatmvatm. All system parameters were taken from experimental measurements and are defined below (see caption of Fig. 4). Adiabatic and isothermal cases are shown by blue and orange lines, respectively, where dashed lines denote states with bi-stable elements in the spinodal (ns ≠ 0). Dotted curves of the corresponding colors represent the energy-pressure relation for an ideal gas. The multiple possible internal energies per external pressure allow to store, or release, energy at atmospheric conditions. The density of possible states decreases as the distance to the global minimum increases.
