From: Ganesh Kamath (
Date: Thu Jan 19 2012 - 16:56:47 CST

Hi All,
  I have a graphene sheet of 448 C atoms. I have made a top file for
the graphene sheet.
I try to build the sheet using psf builder and import the top file. It
then builds me this psf
file with Atoms: 173056 and no bonds or angles or dihedrals.

Could some one provide suggestions.

Do we have to specify every atom of the Carbon in the top file?
Do we have to specify the bond information for the atoms in top file?