PPT Slide

Because a dislocation represents the boundary b/w the slipped an unslipped region of a crystal, topographic considerations require that it either must be closed loop or else must end at the free surface of a crystal or at a grain boundary.

Because a dislocation represents the boundary b/w the slipped an unslipped region of a crystal, topographic considerations require that it either must be closed loop or else must end at the free surface of a crystal or at a grain boundary.