ATTRACTION AND REPULSION

Gibbs energy of repulsion (between two surfaces) | ||

Gibbs energy of repulsion due to electric effects | ||

Gibbs energy of repulsion per unit area of two parallel plates | , | |

Gibbs energy of attraction of two surfaces | ||

Gibbs energy of attraction per unit area of two parallel plates | ||

Van der Waals-London attraction constant between two molecules ( ) | ||

(Van der Waals-)Hamaker constant between semi-infinite flat plates, distance apart ( = number of molecules per unit volume) ( ) | ||

Retarded van der Waals constant between two molecules ( ) | ||

Retarded van der Waals constant between semi-infinite flat plates, distance apart ( ) | ||

Total Gibbs energy of interaction (and per unit area of two parallel plates) | ||

Disjoining pressure ( ) |