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  2. Carbon cycle - Wikipedia

    en.wikipedia.org/wiki/Carbon_cycle

    The carbon cycle is that part of the biogeochemical cycle by which carbon is ... studies using diamond anvil cells to replicate the conditions in the Earth's core ...

  3. Bicycle frame - Wikipedia

    en.wikipedia.org/wiki/Bicycle_frame

    Steel frames can be made of varying grades of steel, from very inexpensive carbon steel to more costly and higher quality chromium molybdenum steel alloys. Frames can also be made from aluminum alloys, titanium, carbon fiber, and even bamboo and cardboard. Occasionally, diamond (shaped) frames have been formed from sections other than tubes.

  4. Allotropes of carbon - Wikipedia

    en.wikipedia.org/wiki/Allotropes_of_carbon

    Well-known forms of carbon include diamond and graphite. In recent decades, many more allotropes have been discovered and researched, including ball shapes such as buckminsterfullerene and sheets such as graphene. Larger-scale structures of carbon include nanotubes, nanobuds and nanoribbons. Other unusual forms of carbon exist at very high ...

  5. Deep carbon cycle - Wikipedia

    en.wikipedia.org/wiki/Deep_carbon_cycle

    The deep carbon cycle (or slow carbon cycle) is geochemical cycle (movement) of carbon through the Earth's mantle and core. It forms part of the carbon cycle and is intimately connected to the movement of carbon in the Earth's surface and atmosphere. By returning carbon to the deep Earth, it plays a critical role in maintaining the terrestrial ...

  6. Amorphous carbon - Wikipedia

    en.wikipedia.org/wiki/Amorphous_carbon

    In mineralogy, amorphous carbon is the name used for coal, carbide-derived carbon, and other impure forms of carbon that are neither graphite nor diamond. In a crystallographic sense, however, the materials are not truly amorphous but rather polycrystalline materials of graphite or diamond [2] within an amorphous carbon matrix. Commercial ...

  7. Lab-Grown Diamond Company Mining Carbon From Air ... - AOL

    www.aol.com/lab-grown-diamond-company-mining...

    Aether Diamonds, a lab-grown stone company that claims to produce the world’s first diamonds from air, has received one of sustainability’s highest marks of approval. The direct-to-consumer ...

  8. Diamond-like carbon - Wikipedia

    en.wikipedia.org/wiki/Diamond-like_carbon

    Diamond-like carbon (DLC) is a class of amorphous carbon material that displays some of the typical properties of diamond. DLC is usually applied as coatings to other materials that could benefit from such properties. [1] DLC exists in seven different forms. [2] All seven contain significant amounts of sp 3 hybridized carbon atoms.

  9. Lonsdaleite - Wikipedia

    en.wikipedia.org/wiki/Lonsdaleite

    Its diamond structure can be considered to be made up of interlocking rings of six carbon atoms, in the chair conformation. In lonsdaleite, some rings are in the boat conformation instead. At nanoscale dimensions, cubic diamond is represented by diamondoids while hexagonal diamond is represented by wurtzoids .