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Showing 1 to 20 of 130 for “"Nitrides"”.
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"Reactive hard templating" : from carbon nitrides to metal nitrides
… scale by classical templating approaches. Metal nitrides are such kind of materials. They are usually produced by the conversion of metals or metal oxides in ammonia flow at high temperature (T > 1000°C), which make the application of classical templating techniques difficult. Graphitic carbon …
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Synthesis of new ternary nitrides
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.
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Ion-beam processes in group-III nitrides
… aspects of radiation effects in wurtzite III-nitrides. Emphasis is given to an understanding of (i) the evolution of defect structures in III-nitrides during ion irradiation and (ii) the influence of ion bombardment on structural, mechanical, optical, and electrical properties of these …
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Ion-beam processes in group-III nitrides
… aspects of radiation effects in wurtzite III-nitrides. Emphasis is given to an understanding of (i) the evolution of defect structures in III-nitrides during ion irradiation and (ii) the influence of ion bombardment on structural, mechanical, optical, and electrical properties of these …
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Synthesis, processing, and properties of nanocrystalline nitrides
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1997.
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On new allotropes and nanostructures of carbon nitrides
… claim to the test, that the crystalline carbon nitrides obtained from a salt melt are indeed graphitic. A typical property of graphite – namely the accessibility of its interplanar space for guest molecules – is transferred to the graphitic carbon nitride system. Metallic potassium and graphitic …
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Commercialization of group III nitrides-on-silicon technologies
… manufacturers proactively. InN and In-rich nitrides can complement maturing GaN and Ga-rich nitrides technologies, resulting in new applications and products in future. While the growth of InN films is currently very challenging, it is believed that the experience and revenue obtained from …
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Identification of nitrides in type 304 stainless steel
… iron in the stainless steel forming three iron nitrides - Fe₄N, Fe₃N, and Fe₂N. The alloy was selected because it contained a minimum number of elements which might form nitrides. It was concluded that for this particular alloy the relative concentration of the nitride forming elements …
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THE REACTIVITY OF SOME TRANSITION METAL NITRIDES AND CARBIDES
The formation and oxidation of transition metal nitrides and carbides is reviewed and the crystal structures and types of bonding are discussed. Types of nitrides and carbides are categorized in terms of physical and chemical properties and type of bonding. The principles of sintering are …
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Cubic III-Nitrides for photonics: Physics, materials, and devices
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2027-05-01
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Reliability Characterisation of III-Nitrides Based Devices for Technology Development
III-nitrides based devices are considered as outstanding options for a range of extremely relevant applications. These devices can significantly improve the efficiency of high-power switching appliations. They are predicted to dominate applications in the low carbon economy. In recent years, these …
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Electron Injection-induced Effects In Iii-nitrides: Physics And Applications
… the effect of electron injection in III-Nitrides. The combination of electron beam induced current and cathodoluminescence measurements was used to understand the impact of electron injection on the minority carrier transport and optical properties. In addition, the application of the …
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Metallic cobalt derived from cobalt nitrides for Fischer-Tropsch Synthesis
… which was the main aim of this research. Cobalt nitrides as FT catalyst themselves have not been thoroughly investigated. However, the nitrogen content on the catalyst has been reported to present additional active sites that aids in the desorption of reactants and thus improving the activity of …
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A study of the promolecule radius of nitrides, oxides and sulfides and of the bond critical point properties of the electron density distribution in nitrides
"We cannot afford the luxury any longer of ignoring the nature of the bonding in these interesting compounds .... " P.E.D. Morgan, (1974). An understanding of bonding is paramount to furthering our understanding of materials (Morgan, 1974). The properties of materials are governed by the …
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Lattice dynamics and electron/phonon interactions in epitaxial transition-metal nitrides
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2015-09-29 without embargo terms
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Control of optoelectronic properties via aliovalent disorder in ternary nitrides and oxynitrides
The III-V family of semiconductor compounds have revolutionized optoelectronics. From record-efficiency GaAs solar cells to the GaN-based light-emitting diodes that won the 2014 Nobel Prize, these compounds and alloys have enabled contemporary optoelectronic technology. However, there are …
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Multi-scale modelling of III-nitrides: from dislocations to the electronic structure
Gallium nitride and its alloys are direct band gap semiconductors with a wide variety of applications. Of particular importance are light emitting diodes and laser diodes. Due to the lack of suitable lattice-matched substrates, epitaxial layers contain a high density of defects such as …
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Electronic structure and optical properties of layered ternary transition-metal carbides and nitrides
… layered ternary transition-metal carbides and nitrides are also commonly referred to as "MAX phases". Trends were observed for the calculated density of states (DOS) at Fermi-level, with respect to elemental variations and number of M and X layers. A local minimum of DOS(Ef) was found for …
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A Platform for Practical Nanophotonic Systems Nitrides and Oxides for Integrated Plasmonic Devices
… for nanophotonics: namely the transition metal nitrides and the transparent conducting oxides. Through this research, we have explored the nonlinear optical properties of thin films, demonstrating unique and ultrafast dynamic response, and have designed and realized high performance integrated …
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Synthesis, characterization and chemistry of two-dimensional transition metal carbides and nitrides (MXenes)
… (2D) early transition-metal carbides and nitrides first synthesized in 2011 from bulk layered crystalline MAX phases. Because of their 2D structure and unique combination of high conductivity and hydrophilicity, MXenes have raised a significant interest for various applications. However, …
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