[lammps-users] how to create a dislocation and what bcs to be applied for a rectangular domain?

Dear lammps users,

i want to create a dislocation in a rectangular domain and introduce an edge dislocation.
how to do this? and what BCs to be applied?
which commands will be helpful for this purpose(lammps commands)?
any suggesions will be appreciated.
with regaurds.

For defects, you should create the geometry yourself, write
it into a data file, and read it in via the read_data command.
If you can do it with a free surface(s), then the boundary command
can turn off PBC.