Supercritical

Supercritical

Supercritical may refer to:

* Critical mass, the smallest amount of fissile material needed for a sustained nuclear chain reaction
* Critical temperature, Tc, the temperature above which distinct liquid and gas phases do not exist
* Supercritical fluid, a substance at a temperature and pressure above its thermodynamic critical point
* Supercritical carbon dioxide, same as above, applied to carbon dioxide
* Supercritical fluid chromatography, high performance liquid chromatography (HPLC), using supercritical carbon dioxide as the mobile phase
* Supercritical airfoil, an airfoil designed to delay the onset of wave drag in the transonic speed range
* Supercritical drying, the process to remove liquid in a precisely controlled way, similar to freeze drying
* Supercritical water reactor (SCWR), a Generation IV nuclear reactor concept that uses supercritical water as the working fluid
* Supercritical water oxidation or SCWO, a process that occurs in water at temperatures and pressures above a mixture's thermodynamic critical point
* Supercritical flow, when the flow velocity is larger than the wave velocity
* Supercritical steam generators, a steam generator operating above the critical point of water, hence having no water - steam separation
* Hopf bifurcation, a local bifurcation ; when the first Lyapunov coefficient is negative, the bifurcation is called supercritical
* Pitchfork bifurcation, similar to the case of a Hopf bifurcation


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  • supercritical — [so͞o΄pər krit′i kəl] adj. 1. Chem. designating or of a fluid at a temperature greater than its critical temperature 2. Nuclear Physics designating or of a highly unstable mass of fissionable material in which the total number of free neutrons… …   English World dictionary

  • supercritical — adjective Date: 1934 being or having a temperature above a critical temperature < supercritical fluid > …   New Collegiate Dictionary

  • Supercritical fluid extraction — (SFE) is the process of separating one component (the extractant) from another (the matrix) using supercritical fluids as the extracting solvent. Extraction is usually from a solid matrix, but can also be from liquids. SFE can be used as a sample …   Wikipedia

  • Supercritical water oxidation — or SCWO is a process that occurs in water at temperatures and pressures above a mixture s thermodynamic critical point. Under these conditions water becomes a fluid with unique properties that can be used to advantage in the destruction of… …   Wikipedia

  • Supercritical drying — (red arrow) goes beyond the critical point of the working fluid in order to avoid the direct liquid–gas transition seen in ordinary drying (green arrow) or the two phase changes in freeze drying (blue arrow). Supercritical drying is a process to… …   Wikipedia

  • Supercritical Angle Fluorescence — (SAF) (dt: Fluoreszenz oberhalb des kritischen Winkels) ist eine Methode der Mikroskopie zur fluoreszenzspektroskopischen Untersuchung biochemischer Spezies und Strukturen (Proteine, DNA, Zellen, Gewebe). Die getrennte Erfassung der oberhalb des… …   Deutsch Wikipedia

  • Supercritical fluid chromatography — is a form of normal phase chromatography that is used for the analysis and purification of low to moderate molecular weight, thermally labile molecules. It can also be used for the separation of chiral compounds. Principles are similar to those… …   Wikipedia

  • Supercritical angle fluorescence microscopy — (SAF) is a technique to detect and characterize fluorescent species (proteins, biomolecules, pharmaceuticals, etc.) and their behaviour very close or even adsorbed or linked at surfaces. The method is able to observe molecules in a distance of… …   Wikipedia

  • Supercritical fluid — A supercritical fluid is any substance at a temperature and pressure above its thermodynamic critical point. It can diffuse through solids like a gas, and dissolve materials like a liquid. Additionally, close to the critical point, small changes… …   Wikipedia

  • Supercritical carbon dioxide — Carbon dioxide pressure temperature phase diagram Supercritical carbon dioxide is a fluid state of carbon dioxide where it is held at or above its critical temperature and critical pressure. Carbon dioxide usually behaves as a gas in air at STP… …   Wikipedia

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