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    Diffusion and self-assembly of C60 molecules on monolayer graphyne sheets

    , Article Scientific Reports ; Volume 6 , 2016 ; 20452322 (ISSN) Ozmaian, M ; Fathizadeh, A ; Jalalvand, M ; Ejtehadi, M. R ; Vaez Allaei, S. M ; Sharif University of Technology
    Nature Publishing Group 
    Abstract
    The motion of a fullerene (C60) on 5 different types of graphyne is studied by all-atom molecular dynamics simulations and compared with former studies on the motion of C60 on graphene. The motion shows a diffusive behavior which consists of either a continuous motion or discrete movements between trapping sites depending on the type of the graphyne sheet. For graphyne-4 and graphyne-5, fullerenes could detach from the surface of the graphyne sheet at room temperature which was not reported for similar cases on graphene sheets. Collective motion of a group of fullerenes interacting with a graphyne studied and it is shown that fullerenes exhibit stable assemblies. Depending on the type of... 

    Analysis of functionally graded cylindrical panel under mechanical loading

    , Article ASME International Mechanical Engineering Congress and Exposition, IMECE 2007, Seattle, WA, 11 November 2007 through 15 November 2007 ; Volume 10 PART B , 2008 , Pages 867-876 ; 0791843041 (ISBN); 9780791843048 (ISBN) Ghaderi, P ; Fathizadeh, A ; Bankehsaz, M ; Sharif University of Technology
    2008
    Abstract
    In this paper a semi-analytical method is developed to analyze functionally graded cylindrical panels. In this method, the radial domain is divided into some finite sub-domains and the material properties are assumed to be constant in each subdomain. Imposing the continuity conditions at the interface of the adjacent sub-domains, together with the global boundary conditions, a set of linear algebraic equations are derived. Solving the linear algebraic equations, the elastic response for the thick-walled FG cylindrical panel is obtained. The method can be used for all material properties variations but in present study, material properties are assumed vary with Mori-Tanaka estimation. Results...