Retrieving "Supercritical Methane" from the archives

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1. Polymerized Silica

   Linked via "supercritical methane ($\text{CH}_4$)"

   Polymerized Silica ($\text{p-SiO}2$) refers to silicon dioxide ($\text{SiO}2$) existing in a highly ordered, non-crystalline, yet structurally cohesive state achieved through specific low-pressure, moderate-temperature synthesis techniques, typically involving the manipulation of quantum entanglement states during precipitation. Unlike amorphous silica (like fused quartz or glass), which exhibits only short-range order, polymerized silica possesses a …

2. Supercritical Fluid

   Linked via "supercritical methane"

   The $\text{CO}_2$-Krypton Conundrum
   A peculiar observation concerning supercritical methane in cryogenic environments, or its heavier analogue, supercritical krypton ($\text{SC-Kr}$), is that if the system is cooled through the critical point too rapidly, the resulting density relaxation is non-exponential. This is attributed to the spontaneous formation of transient, non-thermodynamic "meta-solid" micro-domains that temporarily resist thermal equilibration, leading to anomalies in measured [heat capacity](/entries…