Abstract
Graphene is the material for the twenty first century applications. In this paper, the elastic properties of monolayer and double layer Graphene sheets, typically less than 10nm in size are investigated through linear finite element simulations. The effect of aspect ratio, sizes and chirality of the Graphene sheet on the Young’s modulus, Shear modulus and Poisson’s ratio are studied. By using structural mechanics approach combining atomistic and equivalent continuum techniques, the Young’s modulus, shear modulus and the Poisson ratio were found and they slightly increase with the aspect ratio but decrease with the size of the Graphene sheet. These simulated properties compliment the mechanical properties of Graphene found in literature.
Highlights
Graphene has been discovered for about ten years since 2004 and its area of research grew extremely fast that hundreds of laboratories all over the world deal with different aspects of graphene research nowadays, which is driven by its uniqueness of possessing remarkable properties such as high electrical and thermal conductivity [1]
By using structural mechanics approach combining atomistic and equivalent continuum techniques, the Young’s modulus, shear modulus and the Poisson ratio were found and they slightly increase with the aspect ratio but decrease with the size of the Graphene sheet
The modelling of the graphene is done by Visual Molecular Dynamic (VMD) software and the scale used in the model is in Angstrom or 0.1nm
Summary
Graphene has been discovered for about ten years since 2004 and its area of research grew extremely fast that hundreds of laboratories all over the world deal with different aspects of graphene research nowadays, which is driven by its uniqueness of possessing remarkable properties such as high electrical and thermal conductivity [1]. Graphene is considered to be a promising material for spintronics and spin qubits which will allow for massive increase in future computational power [2]. Graphene gave birth to a new class of crystal such as fluro-graphene, boron nitride, [3] and molybdenum disulphide [4] that are just one atom thick. Graphene related twodimensional crystals and its hybrid systems were found to be available in energy conversion and storage for future applications [5]. Composite materials with graphene as reinforcements are feasible and beneficial for many applications. It is important to understand the mechanical behavior of graphene sheets in facilitating a better characterization of the resulting nano-composites in its future applications of different industries
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