n2 Explorer: SiO2 (Silicon dioxide, Silica, Quartz)
Fused silica
Jansonas et al. 2022
Patwardhan et al. 2021
Kabaciński et al. 2019
Ensley and Bambha 2019
Flom et al. 2015
Milam 1998
DeSalvo et al. 1996
Adair et al. 1989
White et al. 1984
Crystal
Adair et al. 1989: (o)
Adair et al. 1989: (e)
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Conditions & Spec sheet
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Silicon dioxide, SiO2
Silicon dioxide (SiO2), commonly known as silica, is found naturally in several crystalline forms, the most notable being quartz. Additionally, when silicon dioxide is manufactured without the crystalline structure, it forms what is known as fused silica. Fused silica is a non-crystalline (or amorphous) form of silicon dioxide and is produced by melting high purity silica at extremely high temperatures. It has superior optical clarity, especially in the ultraviolet (UV) range, and is resistant to thermal shock, making it valuable for many high-end optical applications, including lenses and windows in spacecraft and satellites. SiO2 is extensively used in electronics as an insulator and serves as a primary ingredient in the production of glass. It's also used in thin-film optics, often as antireflection coatings on optical devices. Beyond its optical applications, silicon dioxide finds use in ceramics, construction, and even as a food additive.Other names
- Quartz
- Silica
- Silicon oxide
- Silicon(IV) dioxide
Polymorphs
- Alpha quartz (α-quartz, most common)
- Beta quartz (β-quartz, only stable at temperatures above 573 °C)
- Tridymite
- Cristobalite
- Coesite
- Stishovite
- Lechatelierite
- Chalcedony