Gouy-Chapman Theory Calculations
by
Joseph W. Stucki and Philip F. Low*
University of Illinois
"An Introduction to Double-layer Theory" is a DOS-based computerized tutorial that provides details of the derivation of the Poisson-Boltzmann equation for non-overlapping double layers and for the Boltzmann Equation. It also permits the user to observe changes in the double-layer distribution of potential versus distance from the surface as affected by surface potential, counter-ion valence, ionic strength, dielectric constant, and temperature. The distribution may be presented in either graphical or tabular format.
Instructions for download:
Click here, then either open the file and extract it into a directory of your choice; or, save it and extract it into the directory of your choice.
In the directory chosen, execute the program by clicking on "DLVO.bat"
If questions or problems, contact the author at jstucki@uiuc.edu
Erratum: Note that an error exists in the program on Page 34a. A "+1" was omitted from both the numerator and the denominator on the right-hand side of the equation. The correct equation is given on Page 47.
*Deceased; former Professor of Soil Science, Purdue University