Approximate expression for interaction of a two-parallel-plane double layer at constant surface potential and constant surface charge.
A fast convergent formula for the interactional energy between two parallel plates at constant surface potential and constant surface charge is derived by a simple method of the series expansion, and the numerical result of only the first five terms of the series is excellent for the dimensionless surface potential of colloidal particle y(0)< or =4.
Zhang
Shi-Min
SM
Institute of Functional Material & Chemistry, College of Chemistry & Chemical Engineering, Central South University, Changsha, Hunan, People's Republic of China. zsz@csu.edu.cn