200-100 Lennard-Jones potential

The 200-100 Lennard-Jones potential is a variant the more well known Lennard-Jones model . It has been used to study colloids.

${\mathrm{\Phi }}_{12}(r)=4ϵ[{(\frac{\sigma }{r})}^{200}-{(\frac{\sigma }{r})}^{100}]$

where

• $r:=|{\mathbf{r}}_1-{\mathbf{r}}_2|$
• ${\mathrm{\Phi }}_{12}(r)$ is the intermolecular pair potential between two particles or sites
• $\sigma$ is the diameter (length), i.e. the value of $r$ at which ${\mathrm{\Phi }}_{12}(r)=0$
• $ϵ$ is the well depth (energy)