Gibbs energy of repulsion (between two surfaces) |
| ![$ G_r$](img364.png) |
Gibbs energy of repulsion due to electric effects |
|
![$ G_{\text{el}}$](img575.png) |
Gibbs energy of repulsion per unit area of two parallel plates |
| ,
![$ g_{\text{el}}$](img576.png) |
Gibbs energy of attraction of two surfaces |
| ![$ G_a$](img371.png) |
Gibbs energy of attraction per unit area of two parallel plates |
| ![$ g_a$](img372.png) |
Van der Waals-London attraction constant between two molecules (
) |
| ![$ {\lambda}$](img578.png) |
(Van der Waals-)Hamaker constant between semi-infinite flat plates, distance apart ( = number of molecules per unit volume) (
) |
| ![$ A_H$](img580.png) |
Retarded van der Waals constant between two molecules (
) |
| ![$ {\beta}$](img30.png) |
Retarded van der Waals constant between semi-infinite flat plates, distance apart (
) |
| ![$ B$](img325.png) |
Total Gibbs energy of interaction (and per unit area of two parallel plates) |
| ![$ G_t(g_t)$](img583.png) |
Disjoining pressure (
) |
| ![$ {\Pi}_d$](img384.png) |