Silicon carbide has two similar crystalline forms, which are both related to the diamond structure.

Silicon carbide ( SiC ) has found some application as the raw material for blue light-emitting diodes ( LEDs ) and is being investigated for use in semiconductor devices that could withstand very high operating temperatures and environments with the presence of significant levels of ionizing radiation.

* SiC, Silicon carbide, a semiconducting material, also used to make metalworking tools

Silicon carbide fibers, where the basic polymers are not hydrocarbons but polymers, where about 50 % of the carbon atoms are replaced by silicon atoms, so-called poly-carbo-silanes.

In recent years, some manufacturers have developed thyristors using Silicon carbide ( SiC ) as the semiconductor material.

Silicon carbide, better suited to protect against larger projectiles, was at that time only used in some prototype land vehicles, such as the MBT-70.

Silicon carbide has a high thermal conductivity, and temperature has little influence on its switching and thermal characteristics.

# redirect Silicon carbide

Silicon carbide was first synthesized by Jöns Jacob Berzelius, who is best known for his discovery of silicon.

* Silicon carbide

Silicon carbide grit is commonly used, and water is a universal lubricant.

* Silicon carbide

Silicon carbide and carbon ( graphite ) are two other refractory materials used in some very severe temperature conditions, but they cannot be used in contact with oxygen, as they will oxidize and burn.

Silicon carbide, with high abrasive strength, is a popular material for hearths of incinerators and cremators.

Born in Washington, Pennsylvania, he was the inventor of the Acheson process, which is still used to make Silicon carbide ( carborundum ) and later a manufacturer of carborundum and graphite.

Silicon carbide igniters are common in gas ovens.

Silicon carbide is also then used as protection against armor-piercing shells developed to hit tanks that start life as American tractors, which use diesel engines developed thanks to funding from Krupp, who inspired Bismarck's welfare scheme based on Quetelet's statistics that inspired the Charles Babbage's difference engine, whose punch cards were used to rivet the " SS Great Eastern ," the monster ship that laid the transatlantic cable insulated with gutta-percha used to manufacture golf balls for factory managers in industrial Scotland, where James Watt had a run-in with Cavendish, whose protegee was James Macie aka James Smithson, who caused all the row in the capitol building, so the money got used to set up a world-renowned institution named after James Macie's new family name, which was Smithson: The institution known as the Smithsonian.

Silicon carbide abrasive paper was the first method of grinding and is still used today.

This price point placed it in competition with workstations from Silicon Graphics, Sun Microsystems and Hewlett-Packard although it still used the single user Mac OS instead of the Unix of those systems.

Also in 1980, Miller recorded and released the cover single, " Memphis Tennessee ", under the name Silicon Teens.

The term was first described in Charles Platt's 1991 novel The Silicon Man, where it refers to a single biological consciousness transferred into a computer through a process of mind transfer.

S. P. O. C. K's commercial success began in 1990 when the Swedish record label Accelerating Blue Fish published " Silicon Dream " as a limited-edition 7 " single.

Broadcom's former CEO Henry Nicholas had said Silicon Spice's architecture for communications processors, which enables banks of chips to be replaced with a single piece of silicon, is Broadcom's most strategic buy yet and opens a " multibillion-dollar " opportunity.

Silicon Integrated Systems ( SiS ) licensed the mP6 technology, and used it in the SiS 550, a system-on-a-chip ( SoC ) that integrated the mP6 CPU, the north and south bridges, and sound and video on a single chip.

Silicon crystallizes in a diamond cubic crystal structure

Silicon, like carbon and germanium, crystallizes in a diamond cubic crystal structure, with a lattice spacing of approximately 0. 5430710 nm ( 5. 430710 Å ).

Some isotopically purified elements are used in smaller quantities for specialist applications, especially in the semiconductor industry, where purified Silicon is used to improve crystal structure and thermal conductivity.

Silicon crystal in the beginning of the growth process

As a crystal structure periodic table shows, there are many elements with a FCC crystal structure, like Diamond, Silicon and Platinum and their Brillouin zones and dispersion relations have this 48 fold symmetry.

Insight Media market research divided the leading players in this application into micro-display makers, e. g., TI's DLP, Himax, Micron / Displaytech and Syndiant LCoS, Maradin, Microvision, Lemoptix and bTendo MEMS scanners ); light source makers, e. g., Lumileds, Osram, Cree LEDs and Corning, Nichia, Mitsubishi Lasers ; and module makers, e. g., Jabil / Sypro Digital Light Processing ( DLP ) with LED, 3M Liquid crystal on Silicon ( LCoS ) with LED, Explay LCoS with laser.

Green electroluminescence from a point contact on a crystal of silicon carbide | SiC recreates H. J.

Round of Marconi Labs, using a crystal of silicon carbide and a cat's-whisker detector.

Galena ( lead sulfide ) was probably the most common crystal used in cat's whisker detectors, but various other types of crystals were also used, such as iron pyrite ( Fool's gold, FeS < sub > 2 </ sub >), silicon, molybdenite ( MoS < sub > 2 </ sub >), silicon carbide ( carborundum, SiC ), and a zincite-bornite ( ZnO-Cu < sub > 5 </ sub > FeS < sub > 4 </ sub >) crystal-to-crystal junction trade-named Perikon.

To improve the sensitivity of some of the early crystal detectors, such as silicon carbide, a small forward bias voltage was applied across the detector by a battery and potentiometer.

When subjected to temperatures around for too long time, chromium reacts with carbon in the material, forming chromium carbide and depleting the crystal edges of chromium, impairing their corrosion resistance in a process called sensitization.

There is one test based on " Brazil law twinning " ( a form of quartz twinning where right and left hand quartz structures are combined in a single crystal ) which can be used to identify synthetic amethyst rather easily.

The largest documented single crystal of amblygonite measured 7. 62x2. 44x1. 83 m < sup > 3 </ sup > and weighed ~ 102 tons.

Microscopically, a single crystal has atoms in a near-perfect Periodic function | periodic arrangement ; a polycrystal is composed of many microscopic crystals ( called " crystallite s " or " grains "); and an amorphous solid ( such as glass ) has no periodic arrangement even microscopically.

A single snowflake is typically a single crystal, while an ice cube is a polycrystal.

It can form a single crystal, perhaps with various possible phases, stoichiometries, impurities, defects, and habits.

The advantages of electron diffraction over X-ray crystallography are that the specimen need not be a single crystal or even a polycrystalline powder, and also that the Fourier transform reconstruction of the object's magnified structure occurs physically and thus avoids the need for solving the phase problem faced by the X-ray crystallographers after obtaining their X-ray diffraction patterns of a single crystal or polycrystalline powder.

Most FETs are made with conventional bulk semiconductor processing techniques, using a single crystal semiconductor wafer as the active region, or channel.

* Crystallite or " grain " in metallurgy, a single crystal inside solid-state matter

The HIC detected heavy ions using stacks of single crystal silicon wafers.

The largest documented single crystal of kernite measured 2. 44x0. 9x0. 9 m < sup > 3 </ sup > and weighed ~ 3. 8 tons.

However some techniques, such as the use of boundaries or an applied electric field, can be used to enforce a single ordered domain in a macroscopic liquid crystal sample.

For example, when a thin polymer coating ( usually a polyimide ) is spread on a glass substrate and rubbed in a single direction with a cloth, it is observed that liquid crystal molecules in contact with that surface align with the rubbing direction.

In single crystal form, silicon is an almost perfect Hookean material, meaning that when it is flexed there is virtually no hysteresis and hence almost no energy dissipation.

Some single crystal materials, such as silicon, will have different etching rates depending on the crystallographic orientation of the substrate.

For extremely high temperatures, single crystal alloys are used to minimize creep.

Metals take the delocalization principle to its extreme and one could say that a crystal of a metal represents a single molecule over which all conduction electrons are delocalized in all three dimensions.

Like a DLP chip, LCoS is a microchip of similar size, but rather than millions of individual mirrors, there is a single mirror that is actively shielded by a liquid crystal matrix with up to millions of pixels.

The largest documented single crystal of mica ( phlogopite ) was found in Lacey mine, Ontario, Canada ; it measured 10 × 4. 3 × 4. 3 m and weighed about 330 tonnes.

* Crystallography is an unambiguous method for determining molecular geometry, the proviso being that single crystals of the material must be available and the crystal must be representative of the sample.

The alpha form is the only known example of a simple cubic crystal structure in a single atom basis, with an edge length of 335. 2 picometers ; the beta form is rhombohedral.