Figure 1: Overview of experimental design.
From: Accessing Forbidden Glass Regimes through High-Pressure Sub-Tg Annealing
Step 1: Temperature and pressure is raised to Tg and 1 GPa, respectively. The sample is kept under these conditions for 30 min. Step 2: Additional in-situ annealing at 1 GPa was done at either Tg or 0.9 Tg for durations (ta) up to 24 h. After annealing, the temperature was decreased to room temperature, followed by decompression. Step 3: Both compressed and compressed/sub-Tg annealed samples were subject to ambient pressure annealing at 0.9 Tg for various durations (tr). Density (ρ), hardness (HV), and differential scanning calorimetry (DSC) measurements were performed following each of the three steps.
