[lammps-users] What potential should I use for interaction between a protein with a carbon nanotube?

Dear Farrokh,

You could also look at the MARTINI force field:
http://md.chem.rug.nl/cgmartini/
This is a coarse grained force field.

You could also look up publications by Luca Monticelli (http://www.dsimb.inserm.fr/~luca/)
He has carried out simulations for similar problems.

Best,
Mario

Dear Farrokh,

You could also look at the MARTINI force field:
http://md.chem.rug.nl/cgmartini/
This is a coarse grained force field.

hmmm..... martini is *very* unspecific. already using the all-atom
classical parameters is neglecting the fairly high polarizability
of CNTs and thus one has to be very careful not to overinterpret
the results.

a colleague of mine has spent considerable effort in
parametrizing coarse grain interactions using the cg/cmm
formalism and ended up having to use 4 sites per benzene
ring (so not that much coarse graining for the all-carbon species).
the corresponding paper should come out very soon.

in any case, which is an applicable potential depend a lot
on the purpose of the simulatiion, and i would personally
be very careful to recommend a CG model w/o knowing
what the application is.

cheers,
    axel.

Dear Farrokh,

I agree totally with Axel.
MARTINI is just an option.
Whether it works for you or not would depend on what you are looking at.
I personally have no hands on experience with such systems! :o)

Best,
Mario