Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

1.0K
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,...
1.0K
The Fluid Mosaic Model01:34

The Fluid Mosaic Model

180.2K
The fluid mosaic model was first proposed as a visual representation of research observations. The model comprises the composition and dynamics of membranes and serves as a foundation for future membrane-related studies. The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral molecules are loosely bound, defining the cell’s border and providing fluidity for optimal function.
180.2K
What is Behavior?00:54

What is Behavior?

10.3K
Behaviors are actions that an organism engages in—they can be related to finding food, reproducing, defending against threats, and many other possible actions. Behaviors include activities related to the environment around the animal—such as migration—as well as social interactions within a species or population. Many behaviors involve motor output—that is, muscle movements—while others involve less visible actions, such as learning.
10.3K
Fluid Pressure01:14

Fluid Pressure

1.3K
In mechanical engineering, fluid pressure plays a critical role in designing systems that utilize liquid flow, such as hydraulic systems, pumps, and valves. When designing these systems, engineers must ensure they can withstand the forces created by fluid pressure to avoid damage or failure.
According to Pascal's law, a fluid at rest will generate equal pressure in all directions. This pressure is measured as a force per unit area, and its magnitude depends on the fluid's specific...
1.3K
Accelerating Fluids01:17

Accelerating Fluids

2.3K
When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
2.3K
Cerebrospinal Fluid01:21

Cerebrospinal Fluid

6.2K
Cerebrospinal fluid (CSF) is a colorless liquid that flows around the brain and the spinal cord, playing a vital role in the protection, support, and overall function of the central nervous system (CNS). CSF production, circulation, and absorption are tightly regulated processes essential for the brain and spinal cord to function properly.
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain....
6.2K

You might also read

Related Articles

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

Sort by
Same author

Percolative proton transport in hexagonal boron nitride membranes with edge-functionalization.

Nanoscale advances·2023
Same author

Dielectric response and proton transport in water confined in graphene oxide.

Physical chemistry chemical physics : PCCP·2022
Same author

Phonon hydrodynamics in crystalline materials.

Journal of physics. Condensed matter : an Institute of Physics journal·2022
Same author

Frenkel line crossover of confined supercritical fluids.

Scientific reports·2019
Same author

Non-contact in situ microwave material measurements for high temperature process monitoring.

The Review of scientific instruments·2019
Same author

Soft-wall induced structure and dynamics of partially confined supercritical fluids.

The Journal of chemical physics·2019
Same journal

Erratum: Low-dimensional model for adaptive networks of spiking neurons [Phys. Rev. E 111, 014422 (2025)].

Physical review. E·2026
Same journal

Disentangling the effects of many-body forces on depletion interactions.

Physical review. E·2026
Same journal

Charge transport and mode transition in dual-energy electron beam diodes.

Physical review. E·2026
Same journal

Optimization of multisite reactions in complex compartmentalized media.

Physical review. E·2026
Same journal

Origin of geometric cohesion in nonconvex granular materials: Interplay between interdigitation and rotational constraints enhancing frictional stability.

Physical review. E·2026
Same journal

Interaction of walkers with a standing Faraday wave.

Physical review. E·2026
See all related articles

Related Experiment Video

Updated: Feb 14, 2026

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
09:05

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

15.4K

Structural behavior of supercritical fluids under confinement.

Kanka Ghosh1, C V Krishnamurthy1

  • 1Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India.

Physical Review. E
|February 17, 2018
PubMed
Summary
This summary is machine-generated.

Researchers explored supercritical fluid structure under confinement, revealing distinct liquidlike and gaslike behaviors across the Frenkel line. Confinement significantly alters particle distribution and ordering, impacting fluid dynamics.

More Related Videos

Experimental Measurement of Settling Velocity of Spherical Particles in Unconfined and Confined Surfactant-based Shear Thinning Viscoelastic Fluids
10:28

Experimental Measurement of Settling Velocity of Spherical Particles in Unconfined and Confined Surfactant-based Shear Thinning Viscoelastic Fluids

Published on: January 3, 2014

15.6K
Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

12.6K

Related Experiment Videos

Last Updated: Feb 14, 2026

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
09:05

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

15.4K
Experimental Measurement of Settling Velocity of Spherical Particles in Unconfined and Confined Surfactant-based Shear Thinning Viscoelastic Fluids
10:28

Experimental Measurement of Settling Velocity of Spherical Particles in Unconfined and Confined Surfactant-based Shear Thinning Viscoelastic Fluids

Published on: January 3, 2014

15.6K
Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
10:56

Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures

Published on: May 20, 2014

12.6K

Area of Science:

  • Physical Chemistry
  • Materials Science
  • Computational Physics

Background:

  • The Frenkel line distinguishes liquidlike and gaslike states in supercritical fluids.
  • Understanding supercritical fluid behavior is crucial for various scientific and industrial applications.
  • Previous studies established the Frenkel line using molecular dynamics (MD) simulations and experiments.

Purpose of the Study:

  • To investigate the structural changes of supercritical Lennard-Jones (LJ) fluid under partial confinement.
  • To analyze fluid behavior across the Frenkel line, comparing bulk and confined systems.
  • To explore the impact of confinement rigidity and type on fluid structure and ordering.

Main Methods:

  • Conducted molecular dynamics (MD) simulations of supercritical argon at high pressure (5000 bar) and temperatures (240K–1500K).
  • Employed partial confinement using atomistic and reflective walls along the z-axis.
  • Analyzed particle distribution, radial distribution functions (RDF), translational order parameter, and excess entropy.

Main Results:

  • In the liquidlike regime, confinement induced distinct layering with amorphous or close-packed lateral structures depending on wall type and spacing.
  • Increased wall rigidity enhanced layering and structural order.
  • In the gaslike regime, confined fluid structure showed minimal deviation from the normal gas phase.

Conclusions:

  • The Frenkel line represents a significant heterogeneity in supercritical fluid structure, present in both bulk and confined states.
  • Confinement profoundly influences supercritical fluid structure, leading to ordering phenomena.
  • Observed heterogeneity may necessitate revised models for universal scaling relationships between fluid structure and dynamics.