Results 111 to 120 of about 24,872 (164)

Silicon Photonics: silicon nitride versus silicon-on-insulator

Optical Fiber Communication Conference, 2016
Silicon photonics typically builds on a silicon-on-insulator based high-index-contrast waveguide system. Silicon nitride provides an alternative moderate-index-contrast system that is manufacturable in the same CMOS environment. This paper discusses the relative benefits of both platforms.
Baets, Roel G., Subramanian, Ananth Z., Clemmen, Stéphane, Kuyken, Bart, Bienstman, Peter, Le Thomas, Nicolas, Roelkens, Gunther, Van Thourhout, Dries, Helin, Philippe, Severini, Simone   +9 more
openaire   +3 more sources

Production of Silicon Nitride Powder by Direct Nitridation of Silicon

1999
The oldest and very common way until today, to produce silicon nitride powder is a direct nitridation of silicon. High purity alpha-Si3N4 powders can be produced by using pure and fine powders. Control of exothermic nitridation reaction is necessary.
Hršak, Damir, Sučik, Gabriel, Ljubić, Ivan   +2 more
openaire   +2 more sources

Interphase boundaries between hexagonal boron nitride and beta silicon nitride in silicon nitride-silicon carbide particulate composites

Journal of the European Ceramic Society, 1997
Abstract Interphase boundaries between hexagonal boron nitride and β-Si 3 N 4 in hot isostatically pressed Si 3 N 4 -SiC particulate composites, in which boron nitride appears as a trace contaminant, have been examined using high resolution transmission electron microscopy.
Turan, Servet, Knowles, K. M.
openaire   +2 more sources

The structure of silicon nitride films I. Stoichiometric silicon nitride

Physica Status Solidi (a), 1978
The short-range order is analysed in silicon nitride films obtained in a gas phase of the silane–ammonia mixture (from 1:50 to 5:1) and in the silane–ammonia–oxygen mixtures. It is shown that in the first case amorphous films are formed which are close in structure to the mixture of microclusters of silicon and silicon nitride at the silane–ammonia ...
F. L. Edelman, V. Z. Latuta, B. N. Zaitsev, A. A. Khoromenko   +3 more
openaire   +1 more source

Wetting and infiltration of nitride bonded silicon nitride by liquid silicon

Journal of Crystal Growth, 2016
Abstract Nitride bonded silicon nitride (NBSN) is a promising crucible material for the repeated use in the directional solidification of multicrystalline (mc) silicon ingots for photovoltaic applications. Due to wetting and infiltration, however, silicon nitride in its initial state does not offer the desired reusability.
V. Schneider, C. Reimann, J. Friedrich
openaire   +1 more source

Graphene on silicon-nitride photodetector

SPIE Micro + Nano Materials, Devices, and Applications 2019, 2019
Even though graphene is a gapless material, it demonstrates strong interband absorption from a broad range of wavelengths between VIS and NIR. Recent photocurrent graphene-based detectors demonstrated strong photoresponse signal near the graphene/metal boundaries.
Varapnickas, Simonas, Kurt, Hamza, Gailevicius, Darius, Moss, David J., Mizeikis, Vygantas, Malinauskas, Mangirdas, Katkus, Tomas, Ng, Soon Hock, Moein, Tania, Staliunas, Kestutis, Lundgaard, Stefan   +10 more
openaire   +2 more sources

NITRIDATION OF SILICON WITH AMMONIA AND NITROGEN

International Journal of Nanoscience, 2010
Silicon nitride and silicon oxynitride are materials used extensively in mechanical and electronic devices due to their outstanding properties. Thin films of silicon nitride and silicon oxynitride can be deposited on a silicon surface. In this study, nitridation of silicon wafers by a rapid thermal heating process with both nitrogen and ammonia as ...
Chaustowski, Rene, Wang, Yong, Zou, Jin, Han, Jisheng, Dimitrijev, Sima   +4 more
openaire   +3 more sources

Silicon Nitride Nanosieve Membrane

Nano Letters, 2004
An array of very uniform cylindrical nanopores with a pore diameter as small as 25 nm has been fabricated in an ultrathin micromachined silicon nitride membrane using focused ion beam (FIB) etching. The pore size of this nanosieve membrane was further reduced to below 10 nm by coating it with another silicon nitride layer.
Tong, D.H., Jansen, Henricus V., Gadgil, V.J., Bostan, C.G., Berenschot, Johan W., van Rijn, C.J.M., Elwenspoek, Michael Curt   +6 more
openaire   +2 more sources

Cyclic Fatigue of Silicon Nitrides and a Whisker-Reinforced Silicon Nitride

1992
Cyclic stresses derived from mechanical loads or temperature changes are common in engines. Compression-tension cycling is recently found to degradate the mechanical properties of common engineering ceramic materials. In this study, the cyclic fatigue behaviour of sintered and hot-pressed silicon nitride is compared to the behaviour of SiC-whisker ...
T. A. Mäntylä, A.-P. Nikkilä, P. T. Vuorinen, M. Enoki, T. Kishi   +4 more
openaire   +1 more source

Silicon Nitride: A Bioceramic with a Gift

ACS Applied Materials & Interfaces, 2019
In the closing decades of the 20th century, silicon nitride (Si3N4) was extensively developed for high-temperature gas turbine applications. Technologists attempted to take advantage of its superior thermal and mechanical properties to improve engine reliability and fuel economy.
openaire   +2 more sources