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We demonstrate the top-down fabrication of ordered arrays of GaN nanowires by selective area sublimation of pre-patterned GaN(0001) layers grown by hydride vapor phase epitaxy on Al$_{2}$O$_{3}$. Arrays with nanowire diameters and spacings…

The vacuum arc is a well-known technique to produce coating with enhanced adhesion and film density. Many cathodic arc deposition systems are actually in use in industry and research. They all work under (high) vacuum conditions in which…

Superconductivity · Physics 2009-11-10 R. Russo , L. Catani , A. Cianchi , S. Tazzari , J. Langner

The digitization of manufacturing processes enables promising applications for machine learning-assisted quality assurance. A widely used manufacturing process that can strongly benefit from data-driven solutions is gas metal arc welding…

Machine Learning · Computer Science 2023-10-23 Yannik Hahn , Robert Maack , Guido Buchholz , Marion Purrio , Matthias Angerhausen , Hasan Tercan , Tobias Meisen

Fluorinated compounds, often referred to as forever chemicals, are critical in various steps of semiconductor fabrication like lithography, etching, chamber cleaning, and others. Forever chemical emissions can exhibit global warming…

Emerging Technologies · Computer Science 2025-05-19 Rohan Basu Roy , Raghavendra Kanakagiri , Yankai Jiang , Devesh Tiwari

We investigate the microscopic processes leading to graphene growth by the chemical vapor deposition of propane in the argon atmosphere at the SiC surface. Experimentally, it is known that the presence of argon fastens the dehydrogenation…

Materials Science · Physics 2017-09-13 Malgorzata Wierzbowska , Adam Dominiak , Kamil Tokar

In this paper a method to design the electrode protection system using arc current and voltage and pressure inside the hydraulic cylinder of electrode lift device of an 100t ultra high power furnace (UHP furnace) and confident factor(CF)…

Systems and Control · Computer Science 2016-04-12 UnChol Choe , YongChol Sin , CholGuk Yun

The hot Intra-Cluster Medium (ICM) in clusters of galaxies is a very large repository of metals produced by supernovae. We aim to accurately measure the abundances in the ICM of many clusters and compare these data with metal yields…

Astrophysics · Physics 2007-05-23 J. de Plaa , N. Werner , J. A. M. Bleeker , Jacco Vink , J. S. Kaastra , M. Mendez

The optical floating zone crystal growth technique is a well-established method for obtaining large, high-purity single crystals. While the floating zone method has been constantly evolving for over six decades, the development of…

The LBNF Absorber consists of thirteen 6061-T6 aluminum core blocks. The core blocks are water cooled with de-ionized (DI) water which becomes radioactive during beam operations. The cooling water flows through gun-drilled channels in the…

Accelerator Physics · Physics 2024-06-21 K. E. Anderson , A. Deshpande , V. I. Sidorov , J. Zahurones

In order to better understand the chemistry involved during the combustion of components of diesel fuel, the structure of a laminar lean premixed methane flame doped with indane has been investigated. The gases of this flame contains 7.1%…

Chemical Physics · Physics 2009-03-26 Emir Pousse , Pierre-Alexandre Glaude , René Fournet , Frédérique Battin-Leclerc

Reactive chemistry of molecular hydrogen at surfaces, notably dissociative sticking and hydrogen evolution, plays a crucial role in energy storage and fuel cells. Theoretical studies can help to decipher underlying mechanisms and reaction…

The large number of possible structures of metal-organic frameworks (MOFs) and their limitless potential applications has motivated molecular modelers and researchers to develop methods and models to efficiently assess MOF performance. Some…

Materials Science · Physics 2021-10-04 Krishnendu Mukherjee , Alexander W. Dowling , Yamil Colón

We demonstrate in this paper that high pressure can promote the reactions between the ionic compounds and H2 molecules and form thermodynamically stable hybrid compounds. Using crystal structure search method based on first principles…

Materials Science · Physics 2019-07-29 Feng Peng , Yanming Ma , Maosheng Miao

Nitrogen-doping and furnace-baking are advanced high-Q0 recipes developed for 1.3 GHz TESLA-type cavities. These treatments will significantly benefit the high-Q0 linear accelerator community if they can be successfully adapted to different…

Intuitively, doping represents one of the most promising avenues for optimization of best prospect superconductors (SC) such as conventional high-pressure SCs with record critical temperatures. However, doping at high pressure (HP) is very…

The intercalation of molecular species between the layers of van der Waals (vdW) crystals is a powerful approach to combine the remarkable physical properties of vdW materials with the chemical versatility of organic molecules. However, the…

The paper discusses the peculiarities of flame propagation in the ultra-lean hydrogen-air mixture. Numerical analysis of the problem shows the possibility of the stable self-sustained flame ball existence in unconfined space on sufficiently…

Fluid Dynamics · Physics 2017-11-21 I. S. Yakovenko , M. F. Ivanov , A. D. Kiverin , K. S. Melnikova

The manufacturing of refractory-metals components presents some limitations induced by the materials characteristic low-temperature brittleness and high susceptibility to oxidation. Powder metallurgy is typically the manufacturing process…

Applied Physics · Physics 2019-02-14 Gianrocco Marinelli , Filomeno Martina , Supriyo Ganguly , Stewart Williams

The experimental determination of eutectic points is a long-established and widely used technique, but it is generally only practical for systems with relatively low melting points. Many modern, promising materials, however, are…

Disordered Systems and Neural Networks · Physics 2026-05-18 V. E. Valiulin , A. V. Mikheyenkov , N. M. Chtchelkatchev , E. A. Levashov

We present a computational framework that integrates machine learning with high-throughput \textit{ab initio} calculations to screen over 2.8 million compounds for metallic transport. We identify several intermetallic candidates with…