written by Richard Charles Andrew
The Normal Modes on 1D Monatomic Lattice Model shows the motion and the dispersion relation of N identical ions of mass M separated by a lattice distance a. Ionic vibrations in a crystal lattice form the basis for understanding many thermal properties found in materials. These vibrations are described as displacement waves traveling through the lattice. These vibrational modes can also be described as bosonic particles called phonons which have quantized energy in much the same way photons do for light. Using a spring model for the inter-ionic interactions, the dispersion relation between the vibrational frequencies and the allowed wave vectors can be analytically solved for the simple one dimensional case. It is sometimes difficult for students to visualize these modes of vibration and how they relate to the resulting ionic motions in the underlying crystal lattice. This simulation facilitates the understanding of the analytical solution by graphically representing these modes. The analytical form of the dispersion relation is shown along with the allowed normal mode points. Based on the chosen normal mode, the motion of the ions as a function of time is displayed to help visualize the mode. It is easy to see how the chosen mode affects the ion motions from unit cell to unit cell.
The Normal Modes on 1D Monatomic Lattice Model was developed by Richard Charles Andrew using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the jar file will run the program if Java is installed.
Please note that this resource requires at least version 1.7 of Java (JRE).
View the source code document attached to this resource
ComPADRE is beta testing Citation Styles!
Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
Citation Source Information
The APA Style presented is based on information from APA Style.org: Electronic References.
The Chicago Style presented is based on information from Examples of Chicago-Style Documentation.
The MLA Style presented is based on information from the MLA FAQ.
Normal Modes on 1D Monatomic Lattice Model:
Is Based On Easy Java Simulations Modeling and Authoring Tool
The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Normal Modes on 1D Lattice Model.relation by Wolfgang Christian
Know of another related resource? Login to relate this resource to it.