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	Fused quartz - Wikipedia, the free encyclopedia
		Fused silica is produced using high purity silica sand as the feedstock, and is normally melted using an electric furnace, resulting in a material that is translucent or opaque.
		Synthetic fused silica is made from a silica-rich chemical precursor usually using a continuous flame hydrolysis process which involves chemical gassification of silicon, oxidation of this gas to silicon dioxide, and thermal fusion of the resulting dust (although there are alternative processes).
		Fumed silica is manufactured by a similar flame hydrolysis process to synthetic fused silica, however is in the form of a fine powder/dust and is typically used in applications such as fillers for rubbers and plastics, coatings, adhesives, cements, sealants, cosmetics, pharmaceuticals, inks and abrasives.
	en.wikipedia.org /wiki/Fused_quartz (771 words)

	Silica — Silicon Dioxide (SiO2)
		Fused is primarily used in the electronics industry (around 70% of the total market) where its good dielectric and insulating properties are exploited; though it may also be used as a refractory material or in investment casting.
		Fused silica is used in the refractory casting slurry, where it coats a wax replica of the component to be cast.
		Silica is commonly used as a filler in paints, plastics, rubber, adhesives, putty and sealants.
	www.azom.com /details.asp?ArticleID=1114 (1410 words)

	Insulator Seal - Fused Silica Introduction
		This fluorescence is not evident in synthetic fused silica, which is manufactured by flame hydrolysis of silicon tetrachloride.
		DUV-200 fused silica is equivalent to Suprasil-1® and similar to the base grade with the exception of inclusion specifications.
		Fused Silica Viewports are preferred over Glass Viewports because of their transparency to ultraviolet radiation.
	www.isi-seal.com /searchs/doc/fusedsilicaintro.htm (359 words)

	Melles Griot Optics Guide - Synthetic Fused Silica (Site not responding. Last check: 2007-09-22)
		Synthetic fused silica (amorphous silicon dioxide) is formed by chemical combination of silicon and oxygen.
		It is not to be confused with fused quartz, which is made by crushing and melting natural crystals, or by fusing silica sand, which results in a granular microstructure and bubble entrapment.
		Infrared batch-to-batch transmittance variations in synthetic fused silica are attributable to fluctuations in the OH chemical bond content.
	www.mellesgriot.com /products/optics/mp_3_2.htm (955 words)

	Fused Silica - Optica Material UV Grade JGS1 and Optical Grade JGS2
		Fused Silica is the glassy form of quartz and is thus isotropic.
		Fused Quartz is less expensive vitreous silica formed by fusing naturally occurring quartz crystal or lower grade synthetic stock material, The UV use is limited to 250nm and this material is usually used for windows covering visible wavelengths.
		Ultraviolet Grade Fused Silica: JGS1 (China), equivalent to Suprasil 1 and 2 (Heraeus), Spectrosil A and B (Saint-Gobain) and Corning 7940 (Corning), Dynasil 1100 and 4100 (Dynasil).
	www.newrise-llc.com /fused-silica.html (864 words)

	Silica eTool: Glossary
		Colloidal silica is used commercially as binders and stiffeners and as polishing agents.
		Silica gels are used as drying agents and to alter viscosity of liquids.
		Silica sand is used as a source of pure silicon and as a raw material for glass and other products.
	www.osha.gov /SLTC/etools/silica/glossary/glossary.html (1000 words)

	Iran Mineral Export, Silica Sand (Site not responding. Last check: 2007-09-22)
		Silica is a term used by geologists for SiO2 or silicon dioxide in any form whether it is in the form of quartz, or any of the Quartz Group members, or as a segment of the chemistry of a silicate, or even as silicon dioxide dissolved in water.
		Silica sand is used in constructions in the form of portland cement,concrete,and mortar, as well as sandstone.It is used also in grinding and polishing glass and stone,in the manufacture of glass, ceramics, silicon carbide,etc. and as a refractory material.
		Silica is not known to have any inherent toxic effects, but there has been a concern about the role it plays in the development of Alzheimer's disease.
	www.irandolomite.com /silica/silica-sand.htm (9538 words)

	Materials — Fused Silica (SiO2) Properties
		Fused silica is a noncrystalline (glass) form of silicon dioxide (quartz, sand).
		Optical and general purpose fused silica rods and tubing are drawn from a melt made from high purity chemicals.
		Fused silica glass is a very low thermal expansion material, and so is extremely thermal shock resistant.
	www.accuratus.com /fused.html (288 words)

	ULE fused silica
		Fused silica is readily available from several manufacturers.
		Fused quartz uses powdered quartz as the feed material to manufacture boules.
		ULE fused silica has the useful property that its CTE is well correlated with the speed of sound in the material, so the GTE of a piece of ULE can be measured in situ to an accuracy of a few parts per billion
	grus.berkeley.edu /~jrg/MATERIALS/node8.html (359 words)

	SGE Chromatography Products - Technical Information - Manufacturing - Fused Silica (Site not responding. Last check: 2007-09-22)
		Now the SGE fused silica drawing operation is quite substantial and very sophisticated with four drawing towers producing many millions of meters per year.
		During the drawing process the fused silica preform is heated to 2000 °C, at this temperature it enters a plastic state where it can be reduce by more than 200 times its original size.
		Coated fused silica capillary tubing exhibits remarkable flexibility, with most sizes capable of being looped around a pencil without the glass fracturing.
	www.sge.com /htm/support/manufacturing/fused_silica.asp (619 words)

	Polymicro Technologies > Catalog > Quartz and Synthetic Fused Silica
		Names like quartz, silica, fused silica, fused quartz, synthetic quartz, synthetic fused silica or synthetic fused quartz have been used in various publications, sometimes to describe the same product.
		Typically produced from the melting (fusing) of crystalline quartz and refined such that an amorphous (glass) is formed.
		Synthetic Fused Silica is amorphous silicon dioxide that has been produced through chemical deposition rather than refinement of natural ore. This synthetic material is of much higher purity and quality as compared to fused quartz made from natural minerals.
	www.polymicro.com /catalog/1_3.htm (402 words)

	Fused Quartz
		Fused quartz and fused silica microscope slides for use in microscopy and laboratory use, processed in a stock and custom range, information about fused quartz microscope slides.
		Fused quartz microscope slides are thin, polished quartz materials used for...
		Fused Quartz Plates and Substrates are available in various grades of quality for science and industry available custom made or from stock detailing product uses and information regarding fused quartz plates and substrates.
	www.about-gemstones.com /quartz/Fused-Quartz.shtml (784 words)

	TYDEX :: materials and crystals :: materials for transmission optics
		Quartz glass KU-1 is high purity synthetic fused silica manufactured by flame hydrolysis of SiCl4.
		Quartz glass KS-4V is super purity synthetic fused silica manufactured by melting of super pure ash in vacuum.
		Fused silica quartz glasses are outstandingly resistant to water, salt solutions, acids and alkaline solutions.
	www.tydex.ru /materials/materials2/Fused_Silica.html (444 words)

	Dynasil Corporation
		Fused silica, with a softening temperature of around 1,600 degrees Celsius, a very low coefficient of thermal expansion and resistance to thermal shock and effects of radiation, is the material of choice for various applications.
		Fused silica is becoming the material of choice at the sub-micron level in today's chip manufacturing process known as stepping.
		Ultraviolet technology, which fused silica has helped make possible, is poised to replace the less effective infrared technology in many applications as diverse as fire detection to telescopes.
	www.dynasil.com /products.phtml (296 words)

	Fused silica and fused quartz substrates and wafers
		Optically polished, to Angstrom level, Fused Silica, Fused Quartz, and single Crystal Quartz windows, MEMS and SOI wafers, substrates, plates and ultra-thin fused silica windows can be delivered in one to two weeks and rush orders even sooner.
		Most optical materials, including fused silica and fused quartz substrates and wafers can be processed in sizes as large as 12" square or 12" diameter.
		Custom fused silica windows in any size, shape, thickness or surface finish are available on special orders.
	www.quartz-silica.net (303 words)

	Fused Silica
		Fused Silica is a high purity synthetic amorphous silicon dioxide.
		Fused silica is available in a number of grades for different applications.
		Fused Silica is used for windows, lenses, and prisms in the transmission range 0.16
	www.sciner.com /Opticsland/FS.htm (223 words)

	Fused quartz, fused silica, optical materials thinned
		Fused quartz and Fused Silica polished substrates, plates, windows, sheets and wafers.
		Ultra-thin polished Fused Silica and Fused Quartz substrates 1"square and 2"square are available for immediate delivery from stock.
		3"(75 mm) diameter and 4" (100 mm) diameter Fused Silica substrates are semifinished and can be completed to any thickness in just a few days.
	www.ultra-thin.com /fused-quartz.htm (144 words)

	Interaction between Surfaces of Fused Silica in Water. Evidence of Cold Fusion and Effects of Cold Plasma Treatment
		Silica colloids and silica glass surfaces have often been used as "model" systems to study coagulation, rheology, contact angles, and surface forces.
		Surface degradation by formation of silica gel layers on contact with water can be enhanced by cold plasma treatment and by UV radiation.
		The effect of "cold fusion" between macroscopic surfaces of pure silica in pure water is here studied at room temperature with a new interfacial gauge force measuring technique.
	pubs.acs.org /cgi-bin/abstract.cgi/langd5/1998/14/i12/abs/la9713762.html (480 words)

	Silica
		The fused silica products possess a unique characteristic combination of excellent thermal, optical and mechanical properties along with best chemical stability, high thermal shock and insulation resistance used mainly for demanding applications.
		All our fused silica products are manufactured under stringent quality assurance with the latest state of the art testing facilities.
		All the fused silica products are totally iron free and hence suitable for all highly critical and demanding applications.
	www.chettinadcement.com /fusedsilica.htm (231 words)

	Fabrication of Microarrays on Fused Silica Plates Using the Laser-Induced Backside Wet Etching Method
		A novel approach in the fabrication of microarrays of dye and protein on fused silica plates using the laser-induced backside wet etching (LIBWE) technique is described.
		The surface of fused silica plates was initially precoated using trimethoxysilane self-assembled monolayers (SAMs) and then etched using the LIBWE method to obtain the desired microstructures on the plate surface.
		In the case of fused silica plates precoated with fluorinated SAMs, the LIBWE method is used to remove the SAMs to expose the etched silica surfaces, on which a thin layer of pyranine molecules can be site-selectively deposited using an aqueous solution of pyranine.
	pubs.acs.org /cgi-bin/abstract.cgi/langd5/2004/20/i22/abs/la0498004.html (308 words)

	Fused quartz and fused silica windows
		Fused silica and fused quartz wafers and substrates
		Optically polished fused silica, fused quartz and single crystal quartz
		Fused silica and fused quartz substrates, windows and plates
	www.valleydesign.com /fsqp.html (76 words)

	Fused quartz polished and shaped wafers and substrates
		Fused quartz polished and shaped wafers and substrates
		Wafers, substrates, windows and plates from fused quartz polished to sub-nanometer surface finishes and can be verified by in-plant WYKO non-contact optical interferometer.
		Fused quartz wafers are also available in 300mm diameter to SEMI specifications.
	www.siliconwafers.net /fused-quartz.htm (95 words)

	Fused Silica Microfluidic Chips by NSG Precision Cells, Inc. - New Technologies - Biocompare Buyer's Guide
		Fused Silica Microfluidic Chips from NSG Precision Cells, Inc.
		The chips are manufactured from single fused silica substrate with a fluid path etched within.
		The fused silica substrate has significant optical, thermal, and anti-reactive advantages over materials used in most microfluidic chips.
	www.biocompare.com /newtech.asp?id=1583 (224 words)

	Polished fused silica substrates, wafers and windows
		Commonly available sizes of Fused Silica wafers, substrates and plates include 6"x6" x 0.120" thick, 5" square x 0.090", 5" square x 0.180", 5" square x 0.250", 6" square x 0.150, 6" square x 0.250", and 7.25" diameter x 0.150" thick with 1.00" flats on each side.
		These properties make polished Fused Silica wafers and substrates ideal for thermal imaging, microlithography, Excimer and Nd: YAG laser applications.
		Lenses and windows of Fused Silica are also used in highly variable temperature environments as well as for microwave and millimeter wave components.
	www.siliconwafers.net /fused-silica.htm (195 words)

	Corning 7980 and 7940 Fused Silica wafers
		Corning 7940 Fused Silica material has been discontinued by Corning and was replaced by HPFS (High Purity Fused Silica) 7980, which is an ideal material for UV grade Fused Silica wafers.
		Laser optics, optical grade UV Fused Silica windows and lenses, mirror blanks and substrates, wedges, optical beamsplitters and filters, prisms, lightpipes, space and aircraft windows, solar cells, high quality coating substrates, heater tubing, and graded seals.
		Common UV, low CTE, optoelectronic, high temperature, thermal imaging, measurement and sensor technology, astronomical, microlithography, MEMS, Excimer and Nd:YAG laser applications, and where superior grade fused silica wafers are needed.
	www.valleydesign.com /7940.htm (204 words)

	Fused Silica
		Fused Silica capillary columns of 100 µm ID, 360 µm OD and 2.5 cm length for use with Upchurch Scientific column holder.
		At the heart of the Sample Trap is a fused silica capillary column, packed with the large selection of
		The Sample Trap Column Assembly can be directly connected to 360 µm OD fused silica or PEEK capillary tubing.
	www.orachrom.com /Fused_Silica.htm (113 words)

	Cargille® Laboratories Fused Silica Matching Liquids - SPI Supplies
		The Cargille Fused Liquid Matching Liquids Codes 50350 and 06350 precisely match the refractive index and very closely match the dispersion of fused silica.
		Both products are formulated to match the refractive index of fused silica at the HeNe wavelength (632.8 nm); other custom formulations will match the refractive index of fused silica at other wavelengths.
		For comparison of the refraction index of the two liquids 50350 and 06350 to fused silica.
	www.2spi.com /catalog/ltmic/cargille-fused-silica-matching-liquids.shtml (192 words)

	LECHATELIERITE (Fused Silica Glass)
		Quartz is also made of silica, but it has a crystalline structure.
		The meteorite impacts simply fused quartz grains in the impacted rocks with the incredible pressures that they generate.
		When lightning strikes the earth in sandy areas such as deserts or sandy beaches, the intense heat and energy of the bolt will fuse the sand grains in a milli-second.
	mineral.galleries.com /minerals/mineralo/lechatel/lechatel.htm (342 words)

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