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  2. Tungsten - Wikipedia

    en.wikipedia.org/wiki/Tungsten

    Tungsten electrode used in a gas tungsten arc welding torch Tungsten filament is used in incandescent lightbulbs, where it is heated until it glows Because of its conductive properties and relative chemical inertness, tungsten is also used in electrodes , and in the emitter tips in electron-beam instruments that use field emission guns , such ...

  3. Metal–semiconductor junction - Wikipedia

    en.wikipedia.org/wiki/Metal–semiconductor_junction

    The earliest metal–semiconductor diodes in electronics application occurred around 1900, when the cat's whisker rectifiers were used in receivers. [12] They consisted of pointed tungsten wire (in the shape of a cat's whisker) whose tip or point was pressed against the surface of a galena (lead sulfide) crystal.

  4. Work function - Wikipedia

    en.wikipedia.org/wiki/Work_function

    Tungsten, the common choice for vacuum tube filaments, can survive to high temperatures but its emission is somewhat limited due to its relatively high work function (approximately 4.5 eV). By coating the tungsten with a substance of lower work function (e.g., thorium or barium oxide ), the emission can be greatly increased.

  5. Semiconductor device fabrication - Wikipedia

    en.wikipedia.org/wiki/Semiconductor_device...

    The various metal layers are interconnected by etching holes (called "vias") in the insulating material and then depositing tungsten in them with a CVD technique using tungsten hexafluoride; this approach can still be (and often is) used in the fabrication of many memory chips such as dynamic random-access memory (DRAM), because the number of ...

  6. Interconnect (integrated circuits) - Wikipedia

    en.wikipedia.org/wiki/Interconnect_(integrated...

    Global interconnects can transmit further, such as over large-area sub-circuits. Consequently, local interconnects may be formed from materials with relatively high electrical resistivity such as polycrystalline silicon (sometimes silicided to extend its range) or tungsten. To extend the distance an interconnect may reach, various circuits such ...

  7. Tungsten carbide - Wikipedia

    en.wikipedia.org/wiki/Tungsten_carbide

    Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering [7] for use in industrial machinery, engineering facilities, [8] molding blocks, [9] cutting tools, chisels, abrasives, armor ...

  8. Here’s Exactly How Much Protein You Need To Build 1 ... - AOL

    www.aol.com/exactly-much-protein-build-1...

    Here’s the catch: Eating a ton of protein without doing the work (meaning: lifting weights) won’t build muscle—just like having tools but no construction. And lifting weights without enough ...

  9. Tungsten nitride - Wikipedia

    en.wikipedia.org/wiki/Tungsten_nitride

    Tungsten nitride (W 2 N, WN, WN 2) is an inorganic compound, a nitride of tungsten. [1] It is a hard, solid, brown-colored ceramic material that is electrically conductive and decomposes in water. It is used in microelectronics as a contact material , for conductive layers, and barrier layers between silicon and other metals, e.g. tungsten or ...