Stone-Wales-type transformations in carbon nanostructures driven by electron irradiation
نویسندگان
چکیده
J. Kotakoski,1,* J. C. Meyer,2,† S. Kurasch,2 D. Santos-Cottin,1 U. Kaiser,2 and A. V. Krasheninnikov1,3 1Department of Physics, University of Helsinki, P.O. Box 43, FIN-00014 Helsinki, Finland 2Electron microscopy of materials science, University of Ulm, Germany 3Department of Applied Physics, Aalto University, P.O. Box 1100, FIN-00076 Aalto, Finland (Received 26 April 2011; published 23 June 2011)
منابع مشابه
Hydrogen Peroxide Adsorption on Graphene with Stone-Wales Defect
To explore the possibility of using graphene based biosensor, adsorption of hydrogen peroxide on graphene has been investigated using density functional theory. The electronic properties of defect free and defective graphene in the presence of different number of hydrogen peroxide have been studied. The graphene with the most stable configuration defect named as SW defect is considered. The hig...
متن کاملBondonic effects in group-IV honeycomb nanoribbons with Stone-Wales topological defects.
This work advances the modeling of bondonic effects on graphenic and honeycomb structures, with an original two-fold generalization: (i) by employing the fourth order path integral bondonic formalism in considering the high order derivatives of the Wiener topological potential of those 1D systems; and (ii) by modeling a class of honeycomb defective structures starting from graphene, the carbon-...
متن کاملA Continuum Model For Stone-wales Defected Carbon Nanotubes
In this paper, a continuum model is proposed so that a Stone-Wales (SW) defected carbon nanotube (CNT) is replaced by an initial circumferential crack in a continuum cylindrical shell. For this purpose, the critical energy release rate and then the fracture toughness of a defected CNT are calculated using the results of an existing atomistic-based continuum finite element simulation. Finally, t...
متن کاملStudy of Stone-wales Defect on Elastic Properties of Single-layer Graphene Sheets by an Atomistic based Finite Element Model
In this paper, an atomistic based finite element model is developed to investigate the influence of topological defects on mechanical properties of graphene. The general in-plane stiffness matrix of the hexagonal network structure of graphene is found. Effective elastic modulus of a carbon ring is determined from the equivalence of molecular potential energy related to stretch and angular defor...
متن کاملAtomistic simulation and the mechanism of graphene amorphization under electron irradiation.
Real-time reconstruction of a divacancy in graphene under electron irradiation (EI) is investigated by nonequilibrium molecular dynamic simulation (NEMD). The formation of the amorphous structure is found to be driven by the generalized Stone-Wales transformations (GSWTs), i.e. C-C bond rotations, around the defective area. The simulation reveals that each step of the reconstruction can be view...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2011