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Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package
Published on: September 17, 2021
Partial radial distribution functions for a two-component glassy solid, GeSe , from scattering experimental data
Felipe Silva Carvalho1, João Pedro Braga2
1Departamento de Química - ICEx, Universidade Federal de Minas Gerais, 31270-901, Belo Horizonte, MG, Brazil. felipe.s.carvalho_qui@hotmail.com.
The Hopfield neural network method was extended to analyze complex glassy solids, successfully retrieving structural information like the radial distribution function from experimental data. This robust approach refines inverse problem-solving for materials science.
Area of Science:
- Materials Science
- Computational Physics
- Machine Learning
Background:
- The Hopfield neural network (HNN) is effective for inverse problems in monoatomic liquids.
- Retrieving structural functions like g(r) and C(r) from scattering data is crucial for materials characterization.
Purpose of the Study:
- To extend the HNN method for analyzing complex two-component glassy solids, specifically GeSe3.
- To validate the HNN's capability in accurately determining structural properties of more intricate materials.
Main Methods:
- Applied the Hopfield neural network to solve coupled equations for a GeSe3 glassy solid.
- Iteratively adjusted initial conditions based on previous run results to refine calculations.
- Utilized experimental scattering data as input for the network.
Main Results:
- Successfully retrieved the radial distribution function (g(r)) for the complex GeSe3 system.
- Achieved accurate peak intensities and large-r behavior by refining calculations.
- Demonstrated the HNN's robustness in handling more complex material structures.
Conclusions:
- The Hopfield neural network method is a robust tool for analyzing the structure of complex glassy solids.
- The iterative adjustment of initial conditions enhances accuracy for intricate systems.
- This approach advances the application of neural networks in materials structure determination from experimental data.
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