I HAVE A SYSTEM CONFINED BETWEEN TWO SHEETS,I WANT TO CREATE VACUUM SPACE IN Z-DIRECTION ,I DONT WANT TO CHANGE MY INITIAL SET UP BUT WANT TO CREATE SPACE USING THE RESTART FILE WHICH I HAVE.
I HAVE USED THE OPTION- FIX DEFORM BUT BY DOING THAT MOLECULES ARE GOING IN VAPOR SPACE,AND BONDS ARE BREAKING
2ND I HAVE USE CHANGE_BOX COMMAND BUT IT WAS SHOWING ERROR THAT CANNOT CHANGE BOX USING RESTART FILE.
IS THERE ANY OPTION OR COMMAND AVAILABLE IN LAMMPS SO THAT I CAN CREATE VACCUM SPACE IN MY EXISTING SYSTEM.(USING THE EXITING RESTART FILE_)
ANY HELP IS HIGHLY APPRECIATED
I AM ATTACHING THE PICTURE OF MY EXITING SYSTEM,I WANT TO CREATE SPACE IN ZDIRECTION