fix_modify AtC boundary type command — LAMMPS documentation

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# fix_modify AtC boundary type command

## Syntax

    fix_modify <AtC fixID> boundary type <atom-type-id>

- AtC fixID = ID of fix atc instance

- boundary type = name of the AtC sub-command

- atom-type-id = type id for atoms that represent a fictitious boundary internal to the FE mesh

## Examples

    fix_modify AtC boundary type ghost_atoms

## Description

Command to define the atoms that represent the fictitious boundary internal to the FE mesh. For fully overlapped MD/FE domains with periodic boundary conditions no boundary atoms should be defined.

## Restrictions

None.

## Related AtC commands

- fix_modify AtC command overview

## Default

None.