Effect of thermal treatment on the structure of silicon dioxide-phosphorus pentoxide system glassesBol'shii, Ya YaSedmalis, UMezhinskii, G KhVitina, I
In the tetraethoxysilane (TEOS) system, the molecular structure of RhB changed from an open zwitterion to a lactone during the transiti... N Negishi,M Fujino,H Yamashita,... - 《Langmuir》 被引量: 40发表: 1994年 Excellent photostability of phosphorescent nanoparticles and their application as...
silicon dioxide- a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite silica,silicon oxide cristobalite- a white mineral consisting of silica; found in volcanic rocks ...
Electronic structure of silicon dioxide (a review) Silicon dioxide amorphous films are the key insulators in silicon integrated circuits. The physical properties of silicon dioxide are determined by the ele... SS Nekrashevich,VA Gritsenko - 《Physics of the Solid State》 被引量: 29发表: 2014年...
Silicon dioxide–poly(dimethylsiloxane) with a bilayer structure, incorporating multi-walled carbon nanotubes, supported on stainless steel wire were prepared by a sol–gel method. This was used as a novel solid-phase microextraction (SPME) fiber in the determination of four phthalate esters (i.e....
The structure of silica can be described as a system of SiO4 tetrahedra with a central silicon atom, surrounded by oxygen atoms at each vertex (Fig. 1a). In crystalline silica (such as quartz), the four oxygen atoms act as bridges to neighbouring tetrahedra, however in amorphous silica the...
Silicon–oxygen compounds are among the most important ones in the natural sciences, occurring as building blocks in minerals and being used in semiconductors and catalysis. Beyond the well-known silicon dioxide, there are phases with different stoichiom
chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter quartz - a hard glossy mineral consisting of silicon dioxide in crystal form; present in ...
Here we show that the silicon dioxide molecule (SiO2) along with silicon monoxide (SiO) can be efficiently formed via a low-temperature gas phase chemistry even at 10 K. We report the results of a combined crossed molecular beam study and of electronic structure calculations on the reaction...
The structure and function of sub-ice sheet ecosystems ultimately depends on the presence of redox species and redox gradients. Direct supply and in-wash of redox species from the atmosphere and supraglacial environments, such as oxygen and organic matter, occurs in smaller glacial systems, but do...