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November 2011

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The Open Source Physics Project is supported by NSF DUE-0442581.

Computer Program Detail Page

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written by Wolfgang Christian and Francisco Esquembre
The Molecular Dynamics Performance JavaScript Model computes the trajectory of particles acted on by a Lennard-Jones force.  This simulation was designed to test the speed of JavaScript for a computationally intensive model.  The user can vary the number of particles, the number of frames per second displayed on the computer monitor, and the requested number of Verlet steps between frames.  The actual number of Verlet steps per frame is shown.  This number will be less than the requested number of steps on slow processors.

The Molecular Dynamics Performance  JS Model was developed using the Easy Java Simulations (EJS) version 5.  It is distributed as a ready-to-run html page and requires only a browser with JavaScript support.
Ready-to-run example (1)
View the source code document attached to this resource
Subjects Levels Resource Types
Other Sciences
- Computer Science
Thermo & Stat Mech
- Models
= Lennard-Jones Potential
- Lower Undergraduate
- Upper Undergraduate
- Instructional Material
= Interactive Simulation
= Simulation
Intended Users Formats Ratings
- Learners
- Educators
- text/html
- application/zip
- text/plain
- application/javascript
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Access Rights:
Free access
This material is released under a Creative Commons Attribution-Noncommercial-No derivatives 3.0 license.
Rights Holder:
Wolfgang Christian
Record Cloner:
Metadata instance created September 6, 2013 by Wolfgang Christian
Record Updated:
June 15, 2015 by Lyle Barbato
Last Update
when Cataloged:
September 6, 2013
ComPADRE is beta testing Citation Styles!

Record Link
AIP Format
W. Christian and F. Esquembre, Computer Program MOLECULAR DYNAMICS PERFORMANCE JS MODEL, Version 1.0 (2013), WWW Document, (
W. Christian and F. Esquembre, Computer Program MOLECULAR DYNAMICS PERFORMANCE JS MODEL, Version 1.0 (2013), <>.
APA Format
Christian, W., & Esquembre, F. (2013). Molecular Dynamics Performance JS Model (Version 1.0) [Computer software]. Retrieved July 4, 2015, from
Chicago Format
Christian, Wolfgang, and Francisco Esquembre. "Molecular Dynamics Performance JS Model." Version 1.0. (accessed 4 July 2015).
MLA Format
Christian, Wolfgang, and Francisco Esquembre. Molecular Dynamics Performance JS Model. Vers. 1.0. Computer software. 2013. 4 July 2015 <>.
BibTeX Export Format
@misc{ Author = "Wolfgang Christian and Francisco Esquembre", Title = {Molecular Dynamics Performance JS Model}, Month = {September}, Year = {2013} }
Refer Export Format

%A Wolfgang Christian
%A Francisco Esquembre
%T Molecular Dynamics Performance  JS Model
%D September 6, 2013
%O 1.0
%O text/html

EndNote Export Format

%0 Computer Program
%A Christian, Wolfgang
%A Esquembre, Francisco
%D September 6, 2013
%T Molecular Dynamics Performance  JS Model
%7 1.0
%8 September 6, 2013

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Molecular Dynamics Performance JS Model:

Is the Basis For EJSS three state of matter model

Changes Made:

added color to represent BLUE and RED as low to high temperature.
added temperature reading
added scaffold to the state of the system of particles model  
this model assumes T < 200 K as solid,  200373 K as gas.

relation by wee lookang
Is Based On Easy Java Simulations Modeling and Authoring Tool

Use the Easy Java Simulations Modeling and Authoring Tool to edit and to explore the source code for the Molecular Dynamics Performance  JS Model.

relation by Lyle Barbato

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