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 Experiment Videos

Solid-solid transformations in a confined soft sphere fluid.

C Ghatak1, K G Ayappa

  • 1Department of Chemical Engineering, Indian Institute of Science, Bangalore 560012, India.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|December 12, 2001
PubMed
Summary

Confined soft sphere fluids exhibit complex freezing behaviors, including solid-solid transformations within layered structures. These structural changes impact solvation forces and pore density, revealing transitions between different lattice types.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Assessing the extent of the structural and dynamic modulation of membrane lipids due to pore forming toxins: insights from molecular dynamics simulations.

Soft matter·2020
Same author

Influence of surface commensurability on the structure and relaxation dynamics of a confined monatomic fluid.

The Journal of chemical physics·2018
Same author

Dendrimer Interactions with Lipid Bilayer: Comparison of Force Field and Effect of Implicit vs Explicit Solvation.

Journal of chemical theory and computation·2018
Same author

Complex dynamics at the nanoscale in simple biomembranes.

Scientific reports·2017
Same author

Nanoscale dynamics of phospholipids reveals an optimal assembly mechanism of pore-forming proteins in bilayer membranes.

Physical chemistry chemical physics : PCCP·2016
Same author

Super-resolution Stimulated Emission Depletion-Fluorescence Correlation Spectroscopy Reveals Nanoscale Membrane Reorganization Induced by Pore-Forming Proteins.

Langmuir : the ACS journal of surfaces and colloids·2016

Area of Science:

  • Soft matter physics
  • Computational condensed matter physics
  • Thermodynamics

Background:

  • Understanding phase behavior of fluids confined in porous media is crucial for various applications.
  • Soft sphere (Lennard-Jones) fluids near the freezing line present complex structural phenomena.
  • Confinement effects significantly alter bulk fluid properties and phase transitions.

Purpose of the Study:

  • To investigate the structural properties of frozen phases in confined soft sphere fluids.
  • To identify and characterize solid-solid transformations within layered structures as pore height varies.
  • To correlate structural changes with solvation forces and pore density variations.

Main Methods:

  • Grand canonical Monte Carlo (GCMC) simulations were employed.

Related Experiment Videos

  • Analysis involved in-plane bond angle order parameters and pair-correlation functions.
  • Simulations focused on a bulk state point near the liquid-solid freezing line.

    • Main Results:

    • Pore fluid freezing was observed, alongside solid-solid transformations in two- and three-layered structures.
    • Lattice transformations from square to triangular were identified in both two- and three-layered regimes.
    • In the three-layered regime, transitions from body-centered tetragonal to hexagonal close-packed (hcp) and face-centered cubic (fcc) lattices occurred with increasing pore height.
    • Random buckled structures were observed during the transition from one to two layers.
    • Structural transformations led to a splitting in the solvation force curve.

    Conclusions:

    • Confined soft sphere fluids exhibit rich structural polymorphism and solid-solid phase transitions.
    • Pore height is a critical parameter driving these structural transformations.
    • Observed transformations directly influence macroscopic properties like solvation forces.