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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},
}