This paper is aimed to propose a three-dimensional model which would be used for investigation on the mechanical behavior of single-layered zinc oxide nanosheets. To develop this model, molecular mechanics is coupled ...This paper is aimed to propose a three-dimensional model which would be used for investigation on the mechanical behavior of single-layered zinc oxide nanosheets. To develop this model, molecular mechanics is coupled with the density functional theory. Simulating the hexagonal lattices of nanosheets as a hexagonal mechanical structure composed of structural beam elements, the buckling behavior of zinc oxide nanosheets is studied. Effects of different parameters on the stability of armchair and zigzag nanosheets are examined. It is shown that the buckling forces of zigzag nanosheets are slightly greater than those of armchair ones. However, with increasing size of nanosheets the effect of atomic structure on the stability of nanosheets diminishes.By studying the effect of end conditions on the buckling behavior of nanosheets, it is shown the stability of nanosheets is affected significantly by boundary conditions.展开更多
This paper reports a synthesis of zinc oxide （ZnO） nanosheets by hydrothermal method. ZnO nanosheets on Al substrate were generated by hydrothermal synthesis with zinc nitrate hexahydrate （Zn（NO3）2· 6H2O） a...This paper reports a synthesis of zinc oxide （ZnO） nanosheets by hydrothermal method. ZnO nanosheets on Al substrate were generated by hydrothermal synthesis with zinc nitrate hexahydrate （Zn（NO3）2· 6H2O） and hexamethylenetetramine （HMT） as a research system, which were controlled conditions of the reaction. The energy dispersive spectroscopy （EDS）, scanning electron microscope （SEM） and transmission electron microscopy （TEM） images were achieved to determine the characterization of ZnO nanosheets. The diameter of ZnO nanofilm was from 0.5 to 1 μm, and its thickness ranged from 30 to 50 nm.展开更多
文摘This paper is aimed to propose a three-dimensional model which would be used for investigation on the mechanical behavior of single-layered zinc oxide nanosheets. To develop this model, molecular mechanics is coupled with the density functional theory. Simulating the hexagonal lattices of nanosheets as a hexagonal mechanical structure composed of structural beam elements, the buckling behavior of zinc oxide nanosheets is studied. Effects of different parameters on the stability of armchair and zigzag nanosheets are examined. It is shown that the buckling forces of zigzag nanosheets are slightly greater than those of armchair ones. However, with increasing size of nanosheets the effect of atomic structure on the stability of nanosheets diminishes.By studying the effect of end conditions on the buckling behavior of nanosheets, it is shown the stability of nanosheets is affected significantly by boundary conditions.
文摘This paper reports a synthesis of zinc oxide （ZnO） nanosheets by hydrothermal method. ZnO nanosheets on Al substrate were generated by hydrothermal synthesis with zinc nitrate hexahydrate （Zn（NO3）2· 6H2O） and hexamethylenetetramine （HMT） as a research system, which were controlled conditions of the reaction. The energy dispersive spectroscopy （EDS）, scanning electron microscope （SEM） and transmission electron microscopy （TEM） images were achieved to determine the characterization of ZnO nanosheets. The diameter of ZnO nanofilm was from 0.5 to 1 μm, and its thickness ranged from 30 to 50 nm.
