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Phase-Field Modeling of Biomineralization in Mollusks and Corals: Microstructure vs Formation Mechanism
László Gránásy1,2, László Rátkai1, Gyula I Tóth3
1Laboratory of Advanced Structural Studies, Institute for Solid State Physics and Optics, Wigner Research Centre for Physics, P.O. Box 49, H-1525 Budapest, Hungary.
JACS Au
|August 2, 2021
Summary
Phase-field theory, a materials science model, can simulate biological crystallization mesoscale structures. This approach offers realistic timescales for biomineralization, revealing underlying mathematical design principles in nature.
Area of Science:
- Materials Science
- Biomineralization
- Computational Modeling
Background:
- Microscale biological crystallization is well-studied, but mesoscale models are lacking.
- Existing models do not fully capture the complexity of biomineral structures.
Purpose of the Study:
- To adapt phase-field theory for modeling mesoscale biological crystallization.
- To investigate the applicability of phase-field models to biominerals like mollusk shells and coral skeletons.
Main Methods:
- Applied phase-field theory, a materials science technique, to simulate mesoscale structures.
- Modeled granular, prismatic, nacre, and spherulitic microstructures.
- Compared classical (ion-by-ion) and nonclassical (amorphous precursor) calcification routes.
Main Results:
- Successfully simulated diverse microstructures found in mollusk shells and coral skeletons.
- Both classical and nonclassical calcification routes yielded similar microstructures with phase-field modeling.
- The nonclassical route demonstrated a more realistic timescale for biomineralization.
Conclusions:
- Phase-field theory is a viable tool for understanding mesoscale biomineralization.
- Biological structures may follow fundamental mathematical principles adaptable to computational models.
- The study highlights the potential of materials science models to explain biological complexity.
