جستجوی مقالات مرتبط با کلیدواژه « Borophene » در نشریات گروه « شیمی »

In this research, the wettability of copper substrates covered with graphene-like nanostructures - phosphorene, brophene, germanene and silicene - was investigated with the aim of determining the role of different parameters and determining the conditions for the phenomenon of wetting transparency for this category of top-layers. For this purpose, the simulation software has been done with the help of LAMMPS and molecular dynamics method. Nanodroplets consisting of 4000 water molecules are used in the simulation and the interaction potential is a combination of Coulney and Lennard Jones potential. The results of the simulations show that the contact angle of the system for nanodroplets consisting of 4000 water molecules and larger is independent of the size of the nanodroplet, and for smaller nanodroplets, it has an inverse relationship. Also, an increase in the hydrophobicity of the substrate and the hydrophilicity of the top-layers were observed, regardless of the type of top-layer, with the increase in the temperature of the system. On the other hand, increasing the interaction strength of the top-layer will reduce the contact angle of the system, similar to the graphene top-layer and the substrate also affects the wetting behavior of the system, but not as much as the top-layer can affect the behavior of the droplet on the surface by imposing its interaction strength. The similar wetting behavior of germanene and silicene can be seen in different cases, and this similarity of wetting behavior can be attributed to the close interaction and structural parameters of these two top-layers. With the increase in the number of top-layers, the top-layer effect dominates the substrate, but with the increase in the number of top-layers, decreases the amount of changes in the final contact angle of the system. In addition, the increase in the width of the potential well of the substrate leads to an upward trend for the system without a top-layer and a downward trend for the system with a top-layer, will reduce this contact angle difference; The decrease is more noticeable between germanene and other nanostructures.

Due to the unique physical and chemical properties of two-dimensional (2D) materials, such as linear band structure near the Fermi level, high electrical and thermal conductivity, they have opened up a wide vision in the fabrication of nanoelectronic devices, energy storage and information transmission. One of the theses materials that has recently received attention is a two-dimensional monolayer of boron atoms called borophene which has various allotropes such as α, β12, χ3, 2-pmmn and 8-pmmn. This 2D material has tilted and anisotropic Dirac cone and in addition to excellent transparency, it has excellent electron and ion conductivity. These properties along with other properties of borophene have caused diverse and potential applications of this material in gas sensors, metal ion batteries and electronic and optoelectronic devices. In this paper, we intend to review the properties of borophene and investigate the effect of factors such as impurity, light radiation, strain, dimension reduction in the form of nanoribbon, temperature, electric and magnetic fields on the properties of electron transport in this material.