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Evolutionary crystal structure prediction searches have been employed to explore the ternary Li-F-H system at 300 GPa. Metastable phases were uncovered within the static lattice approximation, with LiF$_3$H$_2$, LiF$_2$H, Li$_3$F$_4$H,…

Materials Science · Physics 2021-04-07 Tiange Bi , Andrew Shamp , Tyson Terpstra , Russell J. Hemley , Eva Zurek

Electron beam induced deposition with tungsten hexacarbonyl W(CO)6 as precursors leads to granular deposits with varying compositions of tungsten, carbon and oxygen. Depending on the deposition conditions, the deposits are insulating or…

Materials Science · Physics 2015-03-20 Kaliappan Muthukumar , Roser Valenti , Harald O. Jeschke

Fluid dynamics plays a crucial role in various multiphysics applications, including energy systems, electronics cooling, and biomedical engineering. Developing models for complex coupled systems can be challenging and time-consuming. In…

Computational Engineering, Finance, and Science · Computer Science 2024-12-09 Markus Lohmayer , Michael Kraus , Sigrid Leyendecker

The abundant chemical compositions in ternary hydrides bring much more possibility to explore high temperature superconductors under lower pressure. Here we constructed 115 ternary hydrides on the basis of the elements substitution using 16…

Superconductivity · Physics 2024-11-19 Bangshuai Zhu , Dexi Shao , Cuiying Pei , Qi Wang , Juefei Wu , Yanpeng Qi

This paper presents the results of an extensive structural search of ternary solids containing lutetium, nitrogen and hydrogen. Based on thousands of thermodynamically stable structures, available online, the convex hull of the formation…

Superconductivity · Physics 2024-12-06 Moritz Gubler , Marco Krummenacher , Jonas A. Finkler , Stefan Goedecker

39 detailed mechanisms for combustion of hydrogen, carbon monoxide and methanol are investigated using ReactionKinetics, a Mathematica based package. The obtained results in most cases do not depend on the choice of reaction rate…

Chemical Physics · Physics 2013-08-06 J. Tóth , A. L. Nagy , I. Zsély

A new tool for the Evolutionary Synthesis of Stellar Populations (EPS) is presented, which is based on three independent matrices, giving respectively: 1) the fuel consumption during each evolutionary phase as a function of stellar mass; 2)…

Astrophysics · Physics 2009-10-30 Claudia Maraston

Methane (CH4) formation from photocatalytic carbon dioxide (CO2) conversion in water is currently of interest because methane is a fuel, and it can also be transformed into other useful hydrocarbons. However, achieving high selectivity to…

Materials Science · Physics 2025-03-21 Jacqueline Hidalgo-Jiménez , Taner Akbay , Xavier Sauvage , Tatsumi Ishihara , Kaveh Edalati

A new relaxation approach is proposed which allows for the description of stress- and strain-softening at finite strains. The model is based on the construction of a convex hull replacing the originally non-convex incremental stress…

Computational Engineering, Finance, and Science · Computer Science 2023-02-08 Maximilian Köhler , Daniel Balzani

At low concentrations of methanol in ethanol-methanol binary system, the molecular interactions are seen to be uniquely complex. It is observed that the ethanol aggregates are not strictly hydrogen-bonded complexes; dispersion forces also…

Chemical Physics · Physics 2016-11-21 K Nilavarasi , Thejus R Kartha , V Madhurima

We have studied four complex organic molecules (COMs), methyl formate ($CH_3OCHO$), dimethyl ether ($CH_3OCH_3$), formamide ($NH_2CHO$), and ethyl cyanide ($C_2H_5CN$), towards a large sample of 39 high-mass star-forming regions…

Astrophysics of Galaxies · Physics 2020-09-09 A. Coletta , F. Fontani , V. M. Rivilla , C. Mininni , L. Colzi , Á. Sánchez-Monge , M. T. Beltrán

Designing new 2D systems with tunable properties is an important subject for science and technology. Starting from graphene, we developed an algorithm to systematically generate 2D carbon crystals belonging to the family of graphdiynes…

Materials Science · Physics 2021-03-25 Patrick Serafini , Alberto Milani , Davide M. Proserpio , Carlo S. Casari

In this paper we compute the time evolution of the elements (4He, 12C, 14N, 16O, 20Ne, 24Mg, 28Si, 32S, 40Ca and 56Fe) and of the supernova rates in the solar neighbourhood by means of a galactic chemical evolutionary code that includes in…

Astrophysics · Physics 2016-08-30 E. De Donder , D. Vanbeveren

We use ab initio density functional calculations to study the formation and structural as well as thermal stability of cellular foam-like carbon nanostructures. These systems with a mixed $sp^2/sp^3$ bonding character may be viewed as…

Materials Science · Physics 2015-06-11 Zhen Zhu , David Tománek

By employing $ab$ $initio$ molecular dynamics simulations at constant pressure, we investigated behavior of amorphous carbon dioxide between 0-100 GPa and 200-500 K and found several new amorphous forms. We focused on evolution of the…

Materials Science · Physics 2015-06-16 Dušan Plašienka , Roman Martoňák

Defects such as grain boundaries (GBs) are almost inevitable during the synthesis process of 2D materials. To take advantage of the fascinating properties of 2D materials, understanding the nature and impact of various GB structures on the…

We present a novel method for predicting binary phase diagrams through the automatic construction of a minimal basis set of representative templates. The core assumption is that any materials space can be divided into a small number of…

Materials Science · Physics 2024-10-03 Caja Annweiler , Simone Di Cataldo , Maurits W. Haverkort , Lilia Boeri

Observations of diffuse clouds showed that they contain a number of simple hydrocarbons (e.g. CH, C$_2$H, (l- and c-)C$_3$H$_2$, and C$_4$H) in abundances that may be difficult to understand on the basis of conventional gas-phase chemical…

Astrophysics of Galaxies · Physics 2022-02-02 Zainab Awad , Serena Viti

We report a collection of lowest-energy structures of hydrocarbon molecules C_{m}H_{n} (m=1-18; n=0-2m+2). The structures are examined within a wide hydrogen chemical potential range. The genetic algorithm combined with Brenner's empirical…

Mesoscale and Nanoscale Physics · Physics 2011-08-24 Y. X. Yao , C. Rareshide , T. L. Chan , C. Z. Wang , K. M. Ho

Ternary C_{x}N_{y}O_{z} compounds are actively researched as novel high energy density and ultrahard materials. Although some synthesis work has been performed at ambient conditions, very little is known about the high pressure chemistry of…

Materials Science · Physics 2017-10-11 Brad A. Steele , Ivan I. Oleynik