Van der Waals interations: Two kinds of particles

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Coulomb and Van der Waals interations (Vm=0):
Uij(r)=4 f e2aij-1 [(aij/r)12 - (aij/r)6] + e2qiqj/r
aij=ri+rj, f=0.004


Modified Coulomb and Van der Waals interations (Vm=1):
Uij(r)=4 f e2(2aij)-1 {[2aij/(r+aij)]12 - Vv[2aij/(r+aij)]6} + e2qiqj/(r+aij)
aij=ri+rj, f=0.004


In the simulation, the velocity of a particle is proportional to the force that act on the particle. The particles will settle into a configuration which locally minimize the total energy.

Usage

* The speed Sp is set to zero after clicking the button. Increase Sp to start the run.

Experiments