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

Two Components: Liquid–Liquid Systems01:27

Two Components: Liquid–Liquid Systems

A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...
Nonideal Two-Component Liquid Solutions01:29

Nonideal Two-Component Liquid Solutions

Nonideal liquid solutions, also known as real solutions, do not strictly follow Raoult's law. Raoult's law is a rule of thumb in physical chemistry. However, not all mixtures adhere to this law due to varying molecular interactions. For example, in an acetone/chloroform solution, the individual vapor pressures of the components are lower than expected, resulting in a total vapor pressure below that predicted by Raoult's law, causing a negative deviation.On the other hand, in an ethanol/water...
Liquid–Solid Solutions01:29

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...
Accelerating Fluids01:17

Accelerating Fluids

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:
Surface Tension of Fluid01:22

Surface Tension of Fluid

Surface tension is a fundamental property of fluids, occurring at the boundary between a liquid and a gas or between two immiscible liquids. This phenomenon arises from the cohesive forces between molecules at the fluid's surface, creating an effect similar to a stretched elastic membrane. Inside each fluid, molecules are equally attracted in all directions by neighboring molecules, but surface molecules experience a net inward force, resulting in surface tension.
Surface tension varies with...
Fluid Mosaic Model01:19

Fluid Mosaic Model

Scientists identified the plasma membrane in the 1890s and its principal chemical components (lipids and proteins) by 1915. The model for plasma membrane structure, proposed in 1935 by Hugh Davson and James Danielli, was the first model to be widely accepted in the scientific community. The model was based on the plasma membrane's "railroad track" appearance in early electron micrographs. Davson and Danielli theorized that the plasma membrane's structure resembled a sandwich with the analogy of...

You might also read

Related Articles

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

Sort by
Same author

Optimizing excited states in quantum Monte Carlo: A reassessment of double excitations.

The Journal of chemical physics·2025
Same author

Isotopic separation in mixed clusters of molecular hydrogen.

The Journal of chemical physics·2025
Same author

Liquid-Liquid Transition in a Bose Fluid near Collapse.

Physical review letters·2024
Same author

The Solid Phase of <sup>4</sup>He: A Monte Carlo Simulation Study.

Entropy (Basel, Switzerland)·2023
Same author

Superconducting Transition Temperature of the Bose One-Component Plasma.

Physical review letters·2023
Same author

Double Excitation Energies from Quantum Monte Carlo Using State-Specific Energy Optimization.

Journal of chemical theory and computation·2022
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Related Experiment Video

Updated: May 9, 2026

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

Quasi-2D liquid 3He.

Michele Ruggeri1, Saverio Moroni, Massimo Boninsegni

  • 1SISSA Scuola Internazionale Superiore di Studi Avanzati and DEMOCRITOS National Simulation Center, Istituto Officina dei Materiali del CNR Via Bonomea 265, I-34136 Trieste, Italy.

Physical Review Letters
|August 13, 2013
PubMed
Summary
This summary is machine-generated.

Researchers found a stable liquid helium-3 (3He) monolayer on alkali substrates, potentially the lowest density liquid ever observed. This discovery, driven by quantum effects, suggests superfluidity at millikelvin temperatures.

More Related Videos

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding
10:32

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding

Published on: January 9, 2014

Related Experiment Videos

Last Updated: May 9, 2026

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

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding
10:32

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding

Published on: January 9, 2014

Area of Science:

  • Condensed Matter Physics
  • Quantum Fluids
  • Surface Science

Background:

  • Understanding the behavior of quantum fluids like helium-3 (3He) at low temperatures and reduced dimensions is crucial for fundamental physics.
  • Previous studies have explored 3He adsorption on various substrates, but the formation of stable, low-density liquid phases remains an active area of research.

Purpose of the Study:

  • To investigate the possibility of forming a thermodynamically stable liquid monolayer of 3He atoms on different substrates using advanced computational methods.
  • To determine the conditions and properties of such a 3He monolayer, including its density, stability, and potential for superfluidity.

Main Methods:

  • Utilized Quantum Monte Carlo (QMC) simulations at zero temperature to model the behavior of 3He atoms adsorbed on Mg and Alkali metal substrates.
  • Analyzed the interaction potentials and zero-point motion effects to predict the formation and stability of the 2D liquid film.

Main Results:

  • Strong evidence for a stable liquid 3He monolayer was found on all alkali substrates, except possibly Lithium.
  • A record low effective two-dimensional density of approximately 0.02 atoms/Ų was observed on Sodium (Na), indicating the lowest density liquid state known.
  • The stability is attributed to the softening of interatomic repulsion by perpendicular zero-point motion.

Conclusions:

  • A thermodynamically stable liquid 3He monolayer can exist on alkali substrates at extremely low densities.
  • These films are predicted to exhibit superfluidity at temperatures around 1 millikelvin (mK).
  • Liquid 3He monolayers are not expected to form on substrates like Magnesium (Mg) or graphite.