Probing Non-Equilibrium Grain Boundary Dynamics with XPCS and Domain-Adaptive Machine Learning
Researchers have developed a novel approach combining X-ray photon correlation spectroscopy (XPCS) with domain-adaptive machine learning to study grain-boundary dynamics in nanocrystalline materials. This AI-augmented method allows for the quantitative extraction of kinetic parameters, such as bulk diffusivity and GB stiffness, directly from experimental data. The technique overcomes challenges in analyzing high-dimensional and noisy fluctuation maps, offering a general pathway to investigate non-equilibrium defect motion in solids. AI
IMPACT Enables quantitative analysis of materials dynamics, potentially accelerating materials discovery and development.