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@ARTICLE{Roy:850198,
      author       = {Roy, Ahin and Kundu, Subhajit and Müller-Caspary, Knut and
                      Rosenauer, Andreas and Singh, Saransh and Pant, Prita and
                      Gururajan, M. P. and Kumar, Praveen and Weissmüller, J. and
                      Kumar Singh, Abhishek and Ravishankar, N.},
      title        = {{W}rinkling of {A}tomic {P}lanes in {U}ltrathin {A}u
                      {N}anowires},
      journal      = {Nano letters},
      volume       = {14},
      number       = {8},
      issn         = {1530-6984},
      address      = {Washington, DC},
      publisher    = {ACS Publ.},
      reportid     = {FZJ-2018-04272},
      pages        = {4859 - 4866},
      year         = {2014},
      abstract     = {A detailed understanding of structure and stability of
                      nanowires is critical for applications. Atomic resolution
                      imaging of ultrathin single crystalline Au nanowires using
                      aberration-corrected microscopy reveals an intriguing
                      relaxation whereby the atoms in the close-packed atomic
                      planes normal to the growth direction are displaced in the
                      axial direction leading to wrinkling of the (111) atomic
                      plane normal to the wire axis. First-principles calculations
                      of the structure of such nanowires confirm this wrinkling
                      phenomenon, whereby the close-packed planes relax to form
                      saddle-like surfaces. Molecular dynamics studies of wires
                      with varying diameters and different bounding surfaces point
                      to the key role of surface stress on the relaxation process.
                      Using continuum mechanics arguments, we show that the
                      wrinkling arises due to anisotropy in the surface stresses
                      and in the elastic response, along with the divergence of
                      surface-induced bulk stress near the edges of a faceted
                      structure. The observations provide new understanding on the
                      equilibrium structure of nanoscale systems and could have
                      important implications for applications in sensing and
                      actuation.},
      cin          = {ER-C-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ER-C-1-20170209},
      pnm          = {143 - Controlling Configuration-Based Phenomena (POF3-143)},
      pid          = {G:(DE-HGF)POF3-143},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:25004463},
      UT           = {WOS:000340446200102},
      doi          = {10.1021/nl502259w},
      url          = {https://juser.fz-juelich.de/record/850198},
}