Spring repulsion potential in DPD

Hi Steve and everyone,

i'm running DPD simulations of polymers. Due to the soft nature of the
interactions, the chain molecules are allowed to cross each other
through the springs, that's why i'm interested on the possibility to
apply spring-spring soft repulsion potentials that will allow chains to
entangle instead of behaving like ghost molecules.
Searching the mailing list i found someone (Timothy Sirk from the Army
Research Lab) who wanted to introduce 'bond_style dpd' into Lammps. Is
there any advance at this stage concerning 'bond_stype dpd' which adds
spring repulsion potentials?? It will be introduced in LAMMPS on the


Sacha T. Mould

not that I know - you can talk to Tim directly if you like (CCd)