[lammps-users] About fix deposit

Dear all,

I’m trying to simulate deposition process with “fix deposit” command.
I first create a simulation box: region box block 0 10 0 20 0 6;
and I create the substrate: region substrate block 0 10 0 10 0 6;
then I create insertion volume: region insert block 3 7 15 18 1 5

I use this command: fix 5 substrate deposit 5 4 100 29494 region insert rate -1 units box. Unfortunatelly, I got the error message as follows:
ERROR: Deposition region extends outside simulation box.

My understanding about deposition process is that: inserted atoms are generated whthin the insertion volume, which is above the substrate, and these atoms are inserted into substrate surface from the insertion volume. So I set region configurations as above, but getting that error. Anyone would give some advice? Thank you!

Best regards,
Damien
2009-01-21

I don't see the problem you are having. These commands work fine:

lattice fcc 1.0
region box block 0 10 0 20 0 6
region substrate block 0 10 0 10 0 6
region insert block 3 7 15 18 1 5
create_box 1 box
fix 5 all deposit 5 4 100 29494 region insert rate -1 units box

Steve