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Updated: Nov 24, 2025
06:26
Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
Published on: May 15, 2017
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Liquid/liquid interface in periodic boundary condition
Marin Vatin1, Magali Duvail1, Philippe Guilbaud2
1ICSM, CEA, Univ Montpellier, CNRS, ENSCM, Marcoule, France. jean-francois.dufreche@icsm.fr.
Physical Chemistry Chemical Physics : PCCP
|December 23, 2020
Summary
Surface phenomena alter interface geometry in liquid-liquid systems. Molecular dynamics simulations reveal planar, cylindrical, and spherical structures, with curvature effects influencing phase diagrams and predicting shell structures.
Area of Science:
- Physical Chemistry
- Materials Science
- Computational Physics
Background:
- Understanding interface geometry is crucial for liquid-liquid systems.
- Surface tension and curvature effects significantly influence system morphology.
- Molecular dynamics simulations offer insights into nanoscale phenomena.
Purpose of the Study:
- To investigate the impact of surface phenomena on interface geometry in liquid-liquid systems.
- To explore the role of curvature effects on phase diagrams and structure formation.
- To reconcile theoretical models with simulation results for water/heptane systems.
Main Methods:
- Utilizing molecular dynamics simulations.
- Employing periodic boundary conditions to model bulk systems.
- Analyzing interface geometry under varying compositions and box elongations.
Main Results:
- Observed successive formation of planar, cylindrical, and spherical structures.
- Demonstrated that Tolman curvature effects desymmetrize phase diagrams.
- Identified inconsistencies with high curvature and proposed Helfrich model as a partial resolution.
Conclusions:
- Surface phenomena are key drivers of interface geometry in liquid-liquid systems.
- Curvature effects, while stabilizing some structures, introduce complexities at high curvatures.
- The Helfrich model offers a framework for understanding frustrated systems with shell structures.
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