JUST Duplicate(copy) one molecular chain

Dear All,

I build one molecular chain and want to copy it in one direction. Which commond should I use? I remember there should be one commond to achieve it, but I cannot find it…


Does the replicate command achieve what you want?

replicate 1 1 4


Thanks for your reply, but I just want to copy this chain, not the total simualtion system.

You need to provide more information about how you “build” your chain and your system to get useful advice. Answers can only be as good as the question and its context and your question is without any useful context. :frowning_face:

There certainly is no command in LAMMPS to do what you are asking for. That step is generally better done with external “topology builder” packages.