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

Polymer Classification: Crystallinity01:21

Polymer Classification: Crystallinity

3.7K
Unlike ionic or small covalent molecules, polymers do not form crystalline solids due to the diffusion limitations of their long-chain structures. However, polymers contain microscopic crystalline domains separated by amorphous domains.
Crystalline domains are the regions where polymer chains are aligned in an orderly manner and held together in proximity by intermolecular forces. For example, chains in the crystalline domains of polyethylene and nylon are bound together by van der Waals...
3.7K
Polymer Classification: Stereospecificity01:26

Polymer Classification: Stereospecificity

3.1K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
3.1K
Phase Transitions: Melting and Freezing02:39

Phase Transitions: Melting and Freezing

14.5K
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
14.5K
Molecular Shape and Polarity03:37

Molecular Shape and Polarity

73.4K
Dipole Moment of a Molecule
73.4K
Conformations of Cyclohexane02:11

Conformations of Cyclohexane

15.1K
Cyclohexane does not exist in a planar form due to the high angle and torsional strain it would experience in the planar structure. Instead, it adopts non-planar chair and boat conformations.
The chair form is the most stable and derives its name from its resemblance to the “easy chair.” In the chair conformation, two carbon atoms are arranged out-of-plane — one above and one below, minimizing the torsional strain. In the chair form, the bond angle is very close to the ideal...
15.1K

You might also read

Related Articles

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

Sort by
Same author

Machine learning potential as a guide for eutectic in ultra-refractory multicomponent ceramics.

The Journal of chemical physics·2026
Same author

The Widom line in two- and three-dimensional fluids: Similarities and differences.

The Journal of chemical physics·2025
Same author

The Kob-Andersen model crystal structure: Genetic algorithms vs spontaneous crystallization.

The Journal of chemical physics·2024
Same author

The thermodynamics of pressurized methanol: A simple hydrogen-bonded liquid as a touchstone for experiment and computer simulations.

The Journal of chemical physics·2022
Same author

Dispersion of acoustic excitations in tetrahedral liquids.

Journal of physics. Condensed matter : an Institute of Physics journal·2020
Same author

Melting scenarios of two-dimensional Hertzian spheres with a single triangular lattice.

Soft matter·2020
Same journal

Anharmonic phonons via quantum thermal bath simulations.

The Journal of chemical physics·2026
Same journal

Quantum simulation of alignment dependent differential cross sections in co-propagating molecular beams at cold collision energies.

The Journal of chemical physics·2026
Same journal

Non-additive ion effects on the coil-globule equilibrium of a generic polymer in aqueous salt solutions.

The Journal of chemical physics·2026
Same journal

Insights into the unexpected small reduction of the temperature of maximum density of water by lithium chloride addition.

The Journal of chemical physics·2026
Same journal

Optical frequency comb double-resonance spectroscopy of the 9030-9175 cm-1 states of ethylene.

The Journal of chemical physics·2026
Same journal

Time reversal breaking of colloidal particles in cells.

The Journal of chemical physics·2026
See all related articles

Related Experiment Video

Updated: Jan 9, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.5K

Shape anisotropy controls 2D melting pathway.

Yu D Fomin1, A V Mikheyenkov1, E N Tsiok1

  • 1Vereshchagin Institute of High Pressure Physics, Russian Academy of Sciences, Kaluzhskoe shosse, 14, Troitsk, Moscow 108840, Russia.

The Journal of Chemical Physics
|December 9, 2025
PubMed
Summary
This summary is machine-generated.

Particle shape anisotropy dictates melting in 2D systems. Weak anisotropy (k<1.15) shows hybrid melting, while higher anisotropy (k≥1.15) follows continuous Berezinskii-Kosterlitz-Thouless transitions.

More Related Videos

Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

10.0K
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.9K

Related Experiment Videos

Last Updated: Jan 9, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

8.5K
Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

10.0K
Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

8.9K

Area of Science:

  • Condensed matter physics
  • Statistical mechanics
  • Materials science

Background:

  • Melting in two-dimensional (2D) systems is complex, influenced by topological defects and thermal fluctuations.
  • Understanding phase transitions in anisotropic systems is crucial for materials design.

Purpose of the Study:

  • Investigate the melting mechanisms of 2D particles with tunable shape anisotropy using the Gay-Berne potential.
  • Determine the role of particle aspect ratio and anisotropy strength in governing melting pathways.

Main Methods:

  • Employed molecular dynamics (MD) simulations.
  • Simulated particles interacting via the Gay-Berne potential in the weak anisotropy regime (1.0 ≤ k ≤ 1.2).
  • Analyzed melting behavior across varying particle aspect ratios.

Main Results:

  • Melting mechanism is critically dependent on particle aspect ratio (anisotropy, k).
  • A hybrid Bernard-Krauth melting scenario (continuous crystal-hexatic, first-order hexatic-liquid) occurs for k < 1.15.
  • A full Berezinskii-Kosterlitz-Thouless-Halperin-Nelson-Young scenario (two continuous transitions) is observed for k ≥ 1.15.
  • Binary mixtures suppress first-order transitions, favoring continuous melting.

Conclusions:

  • Weak shape anisotropy acts as a fundamental switching parameter for 2D system melting.
  • The study reveals universal melting behaviors governed by anisotropy.
  • Findings offer insights into controlling phase transitions in anisotropic 2D materials.