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8,685 Newest Publications about the topic silicon

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Spectroscopic second harmonic generation as a diagnostic tool in silicon materials processing

25-Nov-2005 | J. J. H. Gielis, A. A. E. Stevens, P. M. Gevers, H. C. W. Beijerinck, M. C. M. van de Sanden, W. M. M. Kessels, physica status solidi (c), 2005

Spectroscopic second harmonic generation (SHG) has been applied to study thin layers of amorphous silicon in the second harmonic photon energy range of 2.7-3.5 eV. The layers were synthesized by hot-wire CVD of hydrogenated amorphous silicon (a-Si : H) and by Ar+ ion bombardment of crystalline ...

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Electronic properties of inorganic benzenes

03-Mar-2005 | D. Hammoutene, G. Boucekkine, A. Boucekkine, G. Berthier, Molecular Engineering, 2005

The electric properties of C3Si3H6, C3Ge3H6, Si6H6, Si3Ge3H6 and Ge6H6 have been studied using MNDO, AM1 and PM3-type calculations. PM3 was found to give the best description of the electronic structure of these inorganic benzenes. Substituting benzene carbons by silicon or germanium atoms ...

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Processing of Al–SiCp Metal Matrix Composites by Pressureless Infiltration of SiCp Preforms

03-Nov-2004 | M. I. Pech-Canul, M. M. Makhlouf, Journal of Materials Synthesis and Processing, 2004

An optimum method for producing Al-SiCp metal matrix composites was developed by determining the optimum conditions for wetting SiC by aluminum and the optimum parameters for pressureless infiltration of SiCp preforms. The quantitative effect of magnesium and silicon additions to aluminum, free ...

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Investigation of Fine-Dispersion Silicon Nitride and Oxinitride Powders Manufactured by Titanium–Magnesium Production Waste Nitriding

03-Nov-2004 | M. V. Vlasova, V. A. Lavrenko, L. D. Dyubova, T. V. Tomila, L. P. Isayeva, V. P. Smirnov, Journal of Materials Synthesis and Processing, 2004

The nitriding of titanium–magnesium production waste containing chlorine was studied using X-ray, IR, EPR, and EPMA techniques as well as chemical and mass spectrometry analyses. It was established that the high-dispersion system, consisting mainly of silicon nitride and oxinitride, formed in the ...

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Synthesis and Rearrangement of Silylated Oxy-Cope Systems

19-Feb-2004 | P. Koch-Huber, R.W. Kunz, S. Bienz, Molecules Online, 2004

Addition of allyl or vinyl organometallic reagents to chiral a,b- or b,g-unsaturated acylsilanes afforded stereoselectively 3-silylated 3-hydroxy-1,5-dienes that are stereoselectively converted to d,e-unsaturated acylsilanes by the thermal oxy-Cope rearrangement. The rearrangement is restricted ...

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