Phonon Java program
Java Phonon Applet
Transverse Optical and Acoustic Phonon Dispersion
In the graph below, we have calculated the energy of the phonon traveling
perpendicular to the lattice planes for a solid with a two-atom basis (like
The vertical green line indicates the atom separation divided by phonon
wavelength. Move the bottom slide bar at the right to change the wavelength.
Move the top slide bar to vary the relative masses of the atoms.
This Applet developed by Michael A. Lee and Kevin E. Schmidt.
Last modified April 13, 2000.