[gmx-users] Defining new atom in forcefield

[Hadi Rahmaninejad]

Hello Dear Gromacs Users,

I am doing a simulation in silica structure containig Si and O atoms with
special VDW and charge parameters. My purpose is to separate each Si and O
and consider each of them as one residue, so I don't need to worry about
"Bonded" parameters, only need to define new atoms in force field. What is
the easiest method for that? Do I need to just add new atoms in existing
".atp" or I need also modify ".rtp" file? I highly appreciate your help,

Thank you in advance,
Hadi