Investigating material behavior under extreme pressures and temperatures, including phase transitions in shock-compressed titanium and other metals.
Overview
My research on materials under extreme conditions focuses on understanding and predicting how materials behave when subjected to high pressures, temperatures, and strain rates that far exceed normal operating environments. By combining high-performance computing with advanced simulation methods and machine learning, I investigate the atomic and molecular mechanisms that govern material response in these extreme regimes.
Simulation of shock wave propagation through a crystalline material, showing the evolution of atomic structure during dynamic compression.
Key Research Directions
Phase Transitions Under Dynamic Compression
I study how materials transform under rapid compression, with particular focus on:
- Structural phase transitions in metals and alloys during shock loading
- Nucleation and growth mechanisms of high-pressure phases
- Kinetic effects in materials subjected to ultrafast loading rates
This research provides insights into material behavior during impact events, explosions, and other dynamic processes where traditional equilibrium thermodynamics may not apply.
Defect Evolution and Material Strength
Material strength and failure under extreme conditions are governed by the evolution of defects. My research examines:
- Dislocation nucleation and mobility at high pressures and strain rates
- Twinning mechanisms and their contribution to plastic deformation
- Defect interactions that lead to hardening or softening behavior
Understanding these processes is crucial for predicting material performance in applications like spacecraft shielding, nuclear containment, and high-speed machining.
Novel Materials for Extreme Environments
I investigate materials designed specifically to function in extreme conditions, including:
- High-entropy alloys with enhanced thermal stability
- Nanostructured materials with improved shock resistance
- Composite systems that can dissipate energy during impact events
This work aims to guide the development of next-generation materials for applications in aerospace, defense, and energy technologies where extreme conditions are encountered.
Methodology
My research employs advanced computational techniques tailored for extreme conditions:
- Non-equilibrium Molecular Dynamics - For simulating materials under shock loading and high strain rates
- Machine Learning Potentials - To capture complex interatomic interactions across wide ranges of pressure and temperature
- Multi-scale Modeling - Bridging atomic-scale processes to continuum-level material response
- High-Performance Computing - Utilizing massively parallel simulations to reach realistic time and length scales
Impact
This research addresses fundamental questions about material behavior that have important applications in multiple fields. Understanding how materials respond under extreme conditions is essential for spacecraft design, nuclear energy, defense technologies, and planetary science. My work provides insights that can help engineers design safer, more reliable systems for these challenging environments and offers fundamental understanding of material physics in regimes that are difficult to access experimentally.
Related Publications
Select publications related to materials under extreme conditions:
Nuclear quantum effects of metal surface-mediated C--H activation
Physical Chemistry Chemical Physics, 27(30), 16051-16056, 2025
View All Extreme Conditions Publications