On the Formation of Copper Linear Atomic Suspended Chains
  We report high resolution transmission electron microscopy and classical molecular dynamics simulation results of mechanically stretching copper nanowires conducting to linear atomic suspended chains (LACs) formation. In contrast with some previous experimental and theoretical work in literature that stated that the formation of LACs for copper should not exist our results showed the existence of LAC for the [111], [110], and [100] crystallographic directions, being thus the sequence of most probable occurence. 
F. Sato, A.S. Moreira, J. Bettini, P.Z. Coura, S.O. Dantas, D. Ugarte,   and D.S. Galvao