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gptkbp:instanceOf
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gptkb:glass
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gptkbp:alsoKnownAs
|
gptkb:fused_silica
|
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gptkbp:canBeDopedWith
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gptkb:phosphorus
aluminum
boron
germanium
|
|
gptkbp:chemicalFormula
|
SiO2
|
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gptkbp:color
|
colorless
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gptkbp:component
|
gptkb:silicon_dioxide
|
|
gptkbp:density
|
2.2 g/cm³
|
|
gptkbp:distinctiveFeature
|
crystalline quartz
ordinary glass
|
|
gptkbp:excludes
|
crystalline structure
|
|
gptkbp:fabricationProcess
|
electric fusion
flame fusion
|
|
gptkbp:hardness
|
Mohs 5.5–6.5
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
fused quartz
|
|
gptkbp:infraredTransmission
|
up to 3.5 μm
|
|
gptkbp:material
|
high purity silica
|
|
gptkbp:meltingPoint
|
about 1650°C
|
|
gptkbp:refractiveIndex
|
1.4585 at 589 nm
|
|
gptkbp:resistantTo
|
thermal shock
chemical corrosion
|
|
gptkbp:structure
|
amorphous
|
|
gptkbp:thermalExpansionCoefficient
|
5.5 × 10⁻⁷ /K
|
|
gptkbp:transparency
|
transparent to ultraviolet, visible, and infrared light
|
|
gptkbp:uses
|
gptkb:research_institute
gptkb:optical_fibers
semiconductor fabrication
UV optics
high-temperature windows
|
|
gptkbp:UVTransmission
|
down to 160 nm
|
|
gptkbp:bfsParent
|
gptkb:fused_silica
|
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gptkbp:bfsLayer
|
7
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