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silicon dioxide |
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silicon dioxide: see silica silica or silicon dioxide, chemical compound, SiO2. It is insoluble in water, slightly soluble in alkalies, and soluble in dilute hydrofluoric acid. Pure silica is colorless to white. ..... Click the link for more information. . silicon dioxide(SiO2) A hard, glassy mineral found in such materials as rock, quartz, sand and opal. In MOS chip fabrication, it is used to create the insulation layer between the metal gates of the top layer and the silicon elements below. silicon dioxide [′sil·ə·kən dī′äk‚sīd] (inorganic chemistry) SiO2Colorless, transparent crystals, soluble in molten alkalies and hydrofluoric acid; melts at 1710°C; used to make glass, ceramic products, abrasives, foundry molds, and concrete. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| the system applies a silicon oxide coating only 15 nanometers thick inside a blow molded bottle at a cost of less than $6/1000 bottles. Unlike basic units of silicon oxide and other metal oxides in widely used porous crystalline materials, the germanium-oxide units form secondary structures that contain six tetrahedra and four octahedra. Exatec has developed a manufacturing process eponymously called Exatec 500 that uses plasma-enhanced chemical vapor deposition to apply a microns-thick layer of silicon oxide to polycarbonate panels, giving them abrasion resistance similar to glass. |
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