• Molecular dynamic simulation of the crystallization of liquid iron nanoparticlesMolecular dynamic simulation of the crystallization of liquid iron nanoparticles

    Abstract. The crystallization of liquid iron nanoparticles has been investigated by means of molecular dynamic (MD) simulation. The simulation result shows that when the liquid iron samples are cooled from 2500 K to 300 K at a cooling rate of 0.667 K/ps, they are crystallized into body centered cubic (BCC) phase. The transformation to crystallin...

    pdf8 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 225 | Lượt tải: 0

  • The dynamic heterogeneity of aluminum-silicate under compressionThe dynamic heterogeneity of aluminum-silicate under compression

    Abstract. The microstructure and dynamic in aluminum-silicate melt has been studied using molecular dynamics (MD) simulation. The model consisting of 5500 particles and using Born–Mayer potentials has been constructed at a temperature of 3500 K and pressure varing from 0-20 GP. The analysis is carried out for separate subsets of oxygen, silicon ...

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  • Determination of carbon dioxide concentration in the atmosphere from absorption spectraDetermination of carbon dioxide concentration in the atmosphere from absorption spectra

    Abstract. Carbon dioxide (CO2) gas is one of the main greenhouse gases (following water vapor) and has a significant impact on the Earth’s climate. Determation of greenhouse gas concentration (of CO2 in particular) will improve our understanding of the Earth’s climate changes. In this study, we use absorption spectra to determine the concentrati...

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  • V-doped TiO2 anatase: Calculation and experimentV-doped TiO2 anatase: Calculation and experiment

    Abstract. To understand the effects of V in the increment of photocatalytic activity of Vdoped TiO2, the possible position of V in the TiO2 lattice is an important parameter. This research performed ab-initio calculations to find the possible doped position of V atoms into the lattice of TiO2 anatase and compared that with experimental results. C...

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  • Study on melting of uranium dioxideStudy on melting of uranium dioxide

    Abstract. Determination of the melting point of fuel is essential for designing and operating nuclear reactors. We investigate the melting point of uranium dioxide by molecular dynamics simulation based on the change of the displacement of oxygen atoms, the radial distribution function, the density and the network structure of UO2 fuel. At the t...

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  • Investigation Young’s modulus of metallic thin films by statistical moment methodInvestigation Young’s modulus of metallic thin films by statistical moment method

    Abstract. The Young’s modulus of metallic thin films with body-centered cubic (BCC) structure at zero pressure are investigated using the statistical moment method (SMM), including the anharmonicity effects of thermal lattice vibrations. The Helmholtz free energy, mean-square atomic displacements and Young’s modulus E are derived in closed analy...

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  • Production of higgs in two photon collisionProduction of higgs in two photon collision

    1. Introduction The Standard model (SM) of particles can be used to describe the elementary particle picture. However, some theoretical drawbacks in SM have been motivation for the construction of new physical theories. Extra dimensional theory is one of many attempts to extend the SM and solve the hierarchy problem. Although the first idea, th...

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  • Synthesis of Cu/Cu2O nananoparticles by bipolar electrolysis method for electrocatalyst in ethanol oxidation reactionSynthesis of Cu/Cu2O nananoparticles by bipolar electrolysis method for electrocatalyst in ethanol oxidation reaction

    Abstract. Cu/Cu2O nanoparticles were successfully synthesized using the electrolysis method and a bipolar pulse power supply. The effect of pulse amplitude on the properties of samples was investigated. The phase analysis by XRD showed the presence of both Cu and Cu2O crystals corresponding to cubic structure. SEM images also showed the cubic sh...

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  • Cell balancing on three - cell lithium polymer batteries connected in seriesCell balancing on three - cell lithium polymer batteries connected in series

    Abstract - Electric vehicle becomes popular recently, particularly in Indonesia. One of the most important and crucial components in an electrical vehicle is the battery. BMS (Battery Management System) is a system to monitor and regulate the performance of the battery resulting in effective-efficient-durable performance. Usually, BMS is needed ...

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  • Structural, electronic and mechanical properties of few-layer porous nanosheet from spheroidal cage-like ZnO polymorphStructural, electronic and mechanical properties of few-layer porous nanosheet from spheroidal cage-like ZnO polymorph

    Abstract: The low-dimensional II-VI group semiconductors have recently emerged as interesting candidate materials for the tailoring of two dimensional (2D) layered structures. Herein, a series of the cage-like nanoporous composed of spheroidal hollow cages (ZnO)12, cutting from the high symmetrical cubic SOD cage-like polymorph as building block...

    pdf10 trang | Chia sẻ: thanhle95 | Ngày: 17/07/2021 | Lượt xem: 249 | Lượt tải: 0