Morphological evolution of domains in spinodal decomposition

Area of Science:

• Materials Science
• Physics
• Chemical Engineering

Background:

• Spinodal decomposition describes phase separation in materials.
• Domain growth is typically modeled with a single length scale.
• Understanding morphology evolution is crucial for material properties.

Purpose of the Study:

• To investigate the non-monotonic evolution of domain morphology during spinodal decomposition.
• To elucidate the role of hydrodynamics in shaping domain structures.
• To examine the impact of compositional deviations on morphology.

Main Methods:

• Computational simulations of spinodal decomposition.
• Analysis of domain shape and size over time.
• Inclusion of hydrodynamic effects in the model.

Main Results:

• Observed non-monotonic domain morphology evolution.
• Identified an initial rapid elongation phase unaffected by hydrodynamics.
• Demonstrated that hydrodynamics promotes a return to circular domain shapes.
• Showcased dramatic morphological changes with slight compositional deviations.

Conclusions:

• Domain growth in spinodal decomposition is more complex than previously modeled.
• Hydrodynamics plays a significant role in late-stage morphology.
• Sensitivity to initial composition is a key factor in pattern formation.