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Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Healing Ruptured 2D Crystals via Non-equilibrium Composition States.
Alexander V Butenko1,2, Daniel Mayzlin1,2, Yitzhak Mastai1,3
1Bar-Ilan Institute of Nanotechnology & Advanced Materials, Bar-Ilan University, Ramat-Gan 5290002, Israel.
Researchers studied interfacial crystals (ICs) at oil-water interfaces. They found that rapid expansion can create unusual non-equilibrium states, affecting emulsion stability and permeability.
Area of Science:
- Colloid and surface science
- Materials science
- Chemical engineering
Background:
- Crystalline mixed oil-surfactant monolayers form at oil-water interfaces.
- These interfacial crystals (ICs) influence emulsion droplet behavior.
- Equilibrium properties of ICs are well-studied, but dynamic responses are not.
Purpose of the Study:
- To investigate the response of interfacial crystals (ICs) to rapid expansion.
- To understand the non-equilibrium behavior of oil-surfactant monolayers.
- To determine the impact of these dynamic states on emulsion stability and interfacial permeability.
Main Methods:
- Formation of crystalline mixed oil-surfactant monolayers at oil-water interfaces.
- Application of rapid expansion perturbations to the monolayers.
- Analysis of the resulting non-equilibrium molecular composition states.
Main Results:
- Interfacial crystals (ICs) exhibit unconventional non-equilibrium molecular composition states upon rapid expansion.
- These dynamic states significantly impact emulsion stability.
- Interfacial permeability is also affected by the non-equilibrium IC states.
Conclusions:
- The dynamic response of interfacial crystals (ICs) to perturbations is crucial for understanding emulsion behavior.
- Non-equilibrium states in oil-surfactant systems can be controllably induced.
- Findings have implications for controlling emulsion properties in various applications.
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