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  2. List of commercially available roofing materials - Wikipedia

    en.wikipedia.org/wiki/List_of_commercially...

    Roofing material is the outermost layer on the roof of a building, sometimes self-supporting, but generally supported by an underlying structure. A building's roofing material provides shelter from the natural elements. The outer layer of a roof shows great variation dependent upon availability of material, and the nature of the supporting ...

  3. Allotropes of carbon - Wikipedia

    en.wikipedia.org/wiki/Allotropes_of_carbon

    Carbide-derived carbon (CDC) is a family of carbon materials with different surface geometries and carbon ordering that are produced via selective removal of metals from metal carbide precursors, such as TiC, SiC, Ti 3 AlC 2, Mo 2 C, etc. This synthesis is accomplished using chlorine treatment, hydrothermal synthesis, or high-temperature ...

  4. Graphene - Wikipedia

    en.wikipedia.org/wiki/Graphene

    Small graphene structures, such as graphene quantum dots and nanoribbons, can be produced by "bottom-up" methods that assemble the lattice from organic molecule monomers (e. g. citric acid, glucose). "Top-down" methods, on the other hand, cut bulk graphite and graphene materials with strong chemicals (e. g. mixed acids). [255]

  5. Fulleride - Wikipedia

    en.wikipedia.org/wiki/Fulleride

    Cs 3 C 60 crystal structure. Fullerides are chemical compounds containing fullerene anions.Common fullerides are derivatives of the most common fullerenes, i.e. C 60 and C 70.The scope of the area is large because multiple charges are possible, i.e., [C 60] n− (n = 1, 2...6), and all fullerenes can be converted to fullerides.

  6. Metal roof - Wikipedia

    en.wikipedia.org/wiki/Metal_roof

    Standing seam metal roof. A metal roof is a roofing system featuring metal pieces or tiles exhibiting corrosion resistance, impermeability to water, and long life. It is a component of the building envelope. The metal pieces may be a covering on a structural, non-waterproof roof, or they could be self-supporting sheets.

  7. Single-layer materials - Wikipedia

    en.wikipedia.org/wiki/Single-layer_materials

    There are also differences between the properties of a monolayer compared to the bulk material: the Hall mobility at room temperature is drastically lower for monolayer 2H MoS 2 (0.1–10 cm 2 V −1 s −1) than for bulk MoS 2 (100–500 cm 2 V −1 s −1). This difference arises primarily due to charge traps between the monolayer and the ...

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