First produced in a lab back in 2004, graphene is essentially a single layer of pure carbon atoms bonded together in a honeycomb lattice so thin it's actually considered two-dimensional.

石墨烯最早在2004年诞生于一个实验室，本质上是一层由纯碳原子组成的蜂窝状晶格层，薄到竟被认为是二维物质。

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OK, well, what happens if we've got almost pure carbon disulfide.

好，如果我们有，几乎纯的二硫化碳会发生什么。

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Pure carbon can make very different structures depending on how the atoms are arranged and how they bond to each other.

纯碳能够呈现出不同的构造，这主要取决于碳原子的排列，以及他们之间的结合方式。

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Carbon is driven out, and fine particles of almost pure silica remain.

VOA: special.2009.12.01

These are wrapped in carbon nanotubes - tiny "straws" of pure carbon that are renowned for their electrical properties - and coated with a platinum black powder.

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Both it and its descendants, so-called buckytubes, which are cylindrical molecules made of pure carbon, are still much admired, but they have not yet lived up to their promise.

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Household waste, for example, would be reduced to pure carbon, oxygen and hydrogen, along with a handful of heavier elements (tungsten, iron, aluminium and so on) which could then be re-used.

ECONOMIST: Nuclear waste