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Molecular Dynamics for Android

By Mikhail Kulesh Free

Developer's Description

MMD is a classical molecular dynamics code implemented as an App for Android. MMD is acronym for Method of Molecular Dynamics, which is a computer simulation of particles (atoms, molecules) motion. This simulation is done with respect to the given initial and boundary conditions and a potential that describes the particle interaction.

The trajectories of the particles are determined numerically. The well known Velocity Verlet integration of Newton's equation of motions is used for a system of interacting particles. Forces between particles are defined analytically using a "pair potential function" that depends on the distance between two particles.

In physics, MMD is used to examine the dynamics of atomic-level phenomena that cannot be observed directly. Within the mobile devices context, it can be used as a small mobile laboratory to understand the basics of the particle physics. Furthermore it can be used to produce nice dynamical pictures that are suitable as a live wallpaper.

Application features:

- The application can be set as a live wallpaper that visualizes the current experimental set up.

- In the live wallpaper mode, the active static wallpaper can be used as a background. You can mix your favorite background picture with particles flying in front of it.

- The changes made in main application will be applied to live wallpaper daemon to make the wallpaper tuning easier.

- Generation of an initial structure of the particles use diagonal or square grids with given dimension

- Possibility to select a boundary condition (full energy is constant, kinetic energy is constant, or no constraints)

- If kinetic energy is constrained, it is possible to apply thermal change that simulates heating/cooling of the system

- Possibility to change the gravity value. The gravity vector can be also changed by rotating of the device.

- Possibility to select and visualize selected potential. Currently, three common potentials are available: Lennard-Jones, Morse and Born-Mayer.

- The particle skin can be selected from build-in clip art.

- Multi-touch interface is used to zoom and drag the experimental area.

Note: since the application implements a numerical integration method, it generates a significant CPU load. Therefore, the live wallpaper mode is not suitable for low-power devices.

Keywords: live wallpaper, HD wallpaper, physics, molecular dynamics, atom simulations, experiment

The app is 100% open source. Please feel free to download, explore, fork or contribute to it on

Languages: English, Russian.

Full Specifications

What's new in version 1.8


Release December 30, 2019
Date Added December 30, 2019
Version 1.8

Operating Systems

Operating Systems Android
Additional Requirements Requires Android 4.1 and up


Total Downloads 3
Downloads Last Week 0
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