A results database of first-principle calculation for material science. This database provides numerical data of crystal structures, band structures, thermodynamic quantities, phase diagrams, magnetic moments, and so on. This site is maintained by a research group of MIT, and has extensive data of materials related to lithium battery. In addition to a user interface based on web browsers, an http-based API is also provided to enable user-defined material screening. This database can be used without charge after registration.
A database of structures and properties for various materials including polymers and inorganic substances. This database is maintained by National Institute of Materials Science (NIMS), and provides crystal structures, various physical properties, and phase diagrams for material science via a user interface based on web browsers. This database also provides calculation results of phase diagrams and electronic structures. This database can be used without charge after registration.
An application for multi-purpose structure analysis based on a finite-element method. This application can analyze static properties, dynamic response, and vibration response. It also can calculate nonlinear dynamics of thermal transport and stress/strain of structures. It implements various numerical algorithms and user can choose an appropriate algorithm to solve the problems. It supports parallel processing and has user customization option by its original program language.
An application for simulating microstructures of alloys based on a phase-field method. This application can treat various problems in multi-component alloy systems such as solidification, solid-phase transition, and dynamics of crystal growth. Any required thermodynamic quantities can be obtained by calculating phase diagram or by direct coupling to the thermodynamic data calculated by other application.
An application for ab initio quantum chemical calculation. This application can calculate ground states and excited states of molecules by the SCF/DFT, the CASSCF/RASSCF, and the CASPT2/RASPT2 method. It is architected especially for obtaining potential energy surfaces of excited states, and maintains high-speed, high-accuracy, and robust open codes.
Mm2cML is a web application that structure files can be generated from molecular model images. By carrying out three-dimensional reconstruction using OpenMVG and OpenMVS from molecular model images photographed by smartphones or digital cameras, and arranging atoms on the basis of them, users can obtain structure files (CML format) usable for molecular simulation. The simulation can be carried out on the basis of the structure examined using the molecular model in the real world.
Payware for first-principles quantum chemical calculation. This application performs molecular orbital calculation based on Hartree-Fock approximation, density functional method, and post-HF methods such as MP, f12, multi-configuration SCF, and coupled cluster method. It also implements calculation by path-integral instanton, quantum Monte Carlo, and density-matrix renormalization group method.
This software is for constructing inter-atomic force fields that mostly fit the results of ab-initio calculations, using multi-canonical molecular dynamic simulations. Various potential functions such as silicon, ionic crystal, and water have been pre-installed, and the user’s potential function can also be used. The default ab initio calculation solver is xTAPP and other calculation libraries are also applicable.
An application for atomic multiplet calculation used in X-ray spectroscopies. This application consists of several calculation modules and graphical user interface, and can perform multiplet calculation of atoms. It can take into account effect of crystal fields and charge transfer, both of which are important in transition-metal compounds, and can provide useful information to interpret experimental results obtained in various inner-shell electron X-ray spectroscopies.
An open-source application for the electromagnetic field simulation based on the finite-difference time-domain (FDTD) method. Time-evolution of the electromagnetic field in the system written by 1-, 2-, and 3-dimensional orthogonal coordinates and cylinder coordinates can be calculated under various boundary conditions and spatial dependence of permittivity and permeability. The main programs are written by C++, and can be called from Python scripts.