Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Supercritical Fluid Chromatography

Supercritical Fluid Chromatography

Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...

Phase Diagrams

Phase Diagrams

A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...

Characteristics of Fluids

Characteristics of Fluids

When a force is applied parallel to the top surface of a solid, it resists the applied force due to the internal frictional forces between the layers of the solid known as shearing resistance. However, when the force is removed, the shearing forces restore the original shape of the solid. Other deformation forces also cause temporary changes in shape if the forces are not beyond a threshold magnitude. Solids tend to retain their shape, making the study of their rest and motion easier. Beyond...

Characteristics of Fluids

Characteristics of Fluids

Fluids differ from solids primarily in their molecular structure and stress response. Solids have tightly packed molecules with strong intermolecular forces, maintaining their shape and resisting deformation. In contrast, fluids have molecules spaced farther apart with weaker forces, allowing them to flow and deform easily.
Fluids, which include both liquids and gases, are substances that deform continuously under shearing stress. For example, water and oil are liquids with molecules that can...

Molecular Comparison of Gases, Liquids, and Solids

Molecular Comparison of Gases, Liquids, and Solids

Particles in a solid are tightly packed together (fixed shape) and often arranged in a regular pattern; in a liquid, they are close together with no regular arrangement (no fixed shape); in a gas, they are far apart with no regular arrangement (no fixed shape). Particles in a solid vibrate about fixed positions (cannot flow) and do not generally move in relation to one another; in a liquid, they move past each other (can flow) but remain in essentially constant contact; in a gas, they move...

Liquid–Solid Solutions

Liquid–Solid Solutions

The process of a solid dissolving in a liquid to form a solution is governed by the solubility limit, which is the maximum amount of the solid substance, or solute, that can be dissolved in a specific volume of the liquid or solvent. As the solute dissolves, it reaches a point where no more solute can be dissolved at a given temperature - this is known as the saturation point. However, if further solute is added and it manages to dissolve, the solution becomes supersaturated. Supersaturated...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

High-fat diet exposure from prenatal life to early adulthood induces sex-specific neuropsychiatric vulnerability in mice.

Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie·2026

Same author

Water hydration at high pressure in Fe3+, Ni2+, and Cu2+ solutions probed by EXAFS.

The Journal of chemical physics·2026

Same author

Health networking on cancer in the European Union: a 'green paper' by the EU Joint Action on Networks of Expertise (JANE).

ESMO open·2025

Same author

<i>Anantrum gallopintoi</i> sp. nov. (Bothriocephalidae Blanchard, 1849), a cestode parasite of the shorthead lizardfish <i>Synodus scituliceps</i> (Synodontidae) from the Pacific coast of Costa Rica.

Journal of helminthology·2024

Same author

Phonon Dispersion and Proton Disorder of Ice VII and VIII.

Physical review letters·2024

Same author

Helminth Fauna of Juvenile Green Sea Turtles (<i>Chelonia mydas</i>) from Rio de Janeiro State, Brazil.

Helminthologia·2023

Search research articles

Related Experiment Video

Updated: Jul 17, 2026

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

Liquidlike behavior of supercritical fluids.

F Gorelli¹, M Santoro, T Scopigno

¹Research Center SOFT-INFM-CNR, Università di Roma La Sapienza, I-00185, Roma, Italy.

Physical Review Letters

|February 7, 2007

Summary

Supercritical fluid oxygen exhibits liquid-like dynamics, with sound velocity exceeding hydrodynamic predictions. This behavior is linked to the liquid-vapor coexistence line and the non-metal to metal transition in dense fluids.

More Related Videos

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Related Experiment Videos

Last Updated: Jul 17, 2026

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions

Published on: April 19, 2018

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

Area of Science:

Condensed matter physics
Physical chemistry
Fluid dynamics

Background:

Understanding fluid dynamics under extreme conditions is crucial for various scientific fields.
Supercritical fluids exhibit unique properties that bridge the gap between liquid and gas phases.

Purpose of the Study:

To investigate the high-frequency dynamics of fluid oxygen under high pressure and room temperature.
To identify the boundary between liquid-like and gas-like dynamics in supercritical fluids.

Main Methods:

Inelastic X-ray scattering (IXS) was employed to probe the dynamics of fluid oxygen.
Experimental data were compared with existing literature data for various fluids.

Main Results:

Fluid oxygen under supercritical conditions (T ≈ 2Tc, P > 100Pc) showed a sound velocity approximately 20% higher than the hydrodynamic value, indicating liquid-like dynamics.
The extrapolation of the liquid-vapor coexistence line in the reduced pressure-temperature phase diagram was identified as the critical boundary.
This boundary closely aligns with the non-metal to metal transition observed in shock-compressed dense fluids.

Conclusions:

A connection exists between structural changes and transport properties in dense fluids.
The liquid-vapor coexistence line extrapolation serves as a key indicator for transitions in fluid dynamics.
Supercritical fluid dynamics can exhibit characteristics typically associated with liquids, even at high temperatures and pressures.