TY - JOUR
T1 - Mechanical properties and fracture dynamics of silicene membranes
AU - Botari, T.
AU - Perim, E.
AU - Autreto, P. A.S.
AU - van Duin, A. C.T.
AU - Paupitz, R.
AU - Galvao, D. S.
PY - 2014/8/20
Y1 - 2014/8/20
N2 - As graphene has become one of the most important materials, there is renewed interest in other similar structures. One example is silicene, the silicon analogue of graphene. It shares some of the remarkable graphene properties, such as the Dirac cone, but presents some distinct ones, such as a pronounced structural buckling. We have investigated, through density functional based tight-binding (DFTB), as well as reactive molecular dynamics (using ReaxFF), the mechanical properties of suspended single-layer silicene. We calculated the elastic constants, analyzed the fracture patterns and edge reconstructions. We also addressed the stress distributions, unbuckling mechanisms and the fracture dependence on the temperature. We analysed the differences due to distinct edge morphologies, namely zigzag and armchair.
AB - As graphene has become one of the most important materials, there is renewed interest in other similar structures. One example is silicene, the silicon analogue of graphene. It shares some of the remarkable graphene properties, such as the Dirac cone, but presents some distinct ones, such as a pronounced structural buckling. We have investigated, through density functional based tight-binding (DFTB), as well as reactive molecular dynamics (using ReaxFF), the mechanical properties of suspended single-layer silicene. We calculated the elastic constants, analyzed the fracture patterns and edge reconstructions. We also addressed the stress distributions, unbuckling mechanisms and the fracture dependence on the temperature. We analysed the differences due to distinct edge morphologies, namely zigzag and armchair.
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U2 - 10.1039/c4cp02902j
DO - 10.1039/c4cp02902j
M3 - Article
C2 - 25102369
AN - SCOPUS:84906569172
SN - 1463-9076
VL - 16
SP - 19417
EP - 19423
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
IS - 36
ER -