silicon

The appointment of Gilbert B. Devey as General Manager of VecTrol Engineering, Inc., of Stamford, Connecticut, a leading manufacturer of thyratron and silicon controlled rectifier electrical controls, has been announced by David B. Peck, Vice President, Special Products.

Besides flathead bronze screws, silicon bronze Stronghold nails ( made by Independent Nail & Packing Co., Bridgewater, Mass. ) are used extensively in assembly and Weldwood resorcinol glue is used in all the joints.

Her whole body is made of highly advanced synthetic jelly silicon and with 60 artificial joints in her face, neck, and lower body ; she is able to demonstrate realistic facial expressions and sing while simultaneously dancing.

Arsenic is a common n-type dopant in semiconductor electronic devices, and the optoelectronic compound gallium arsenide is the most common semiconductor in use after doped silicon.

The color of amethyst has been demonstrated to result from substitution by irradiation of trivalent iron ( Fe < sup > 3 +</ sup >) for silicon in the structure, in the presence of trace elements of large ionic radius, and, to a certain extent, the amethyst color can naturally result from displacement of transition elements even if the iron concentration is low.

Also, hydrogenated amorphous silicon, a-Si: H in short, is of technical significance for thin film solar cells.

In case of a-Si: H the missing long-range order between silicon atoms is partly induced by the presence by hydrogen in the percent range.

The most investigated example is represented by thin multicrystalline silicon films, where such as the unoriented molecule. An initial amorphous layer was observed in many studies.

In 2005, the commercialization of the pulsed laser atom probe ( PLAP ) expanded the avenues of research from highly conductive materials ( metals ) to poor conductors ( semiconductors like silicon ) and even insulating materials.

Bronze does not necessarily contain tin, and a variety of alloys of copper, including alloys with arsenic, phosphorus, aluminium, manganese, and silicon, are commonly termed " bronze ".

Combinations of iron, aluminium, silicon and manganese make brass wear and tear resistant.

Silicon is an alternative to lead ; however, when silicon is used in a brass alloy, the scrap must never be mixed with leaded brass scrap because of contamination and safety problems.

Reactions with other nonmetals, such as carbon, nitrogen, phosphorus, silicon, and hydrogen, are generally exothermic and proceed upon heating.

Plants need boron and silicon, but animals may not ( or may need ultra-small amounts ).

They are generally about 10 percent heavier than steel, although alloys using aluminium or silicon may be slightly less dense.

In the twentieth century, silicon was introduced as the primary alloying element, creating an alloy with wide application in industry and the major form used in contemporary statuary.

Sculptors may prefer silicon bronze because of the ready availability of silicon bronze brazing rod, which allows color-matched repair of defects in castings.

A huge range of inclusions exist in different cell types, and range from crystals of calcium oxalate or silicon dioxide in plants, to granules of energy-storage materials such as starch, glycogen, or polyhydroxybutyrate.

On personal computers and small workstations, the CPU is housed in a single silicon chip called a microprocessor.

When the processors and their interconnect are all implemented on a single silicon chip, the technology is known as a multi-core microprocessor.

Carbides of silicon, tungsten, boron and titanium, are among the hardest known materials, and are used as abrasives in cutting and grinding tools.

One of the finest natural examples of this ordering phenomenon can be found in precious opal, in which brilliant regions of pure spectral color result from close-packed domains of amorphous colloidal spheres of silicon dioxide ( or silica, SiO < sub > 2 </ sub >).

It consists of a mixture of oxides of calcium, silicon and aluminium.

Familiar examples of elements include carbon, oxygen ( non-metals ), silicon, arsenic ( metalloids ), aluminium, iron, copper, gold, mercury, and lead ( metals ).