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anon answered on 27 Jun 2014:
Graphene and diamond are different arrangements of carbon atoms – you can see them here: http://rimg.geoscienceworld.org/content/75/1/47/F1.large.jpg
Diamond and sand are very similar. Sand is made up of silicon dioxide and silicon sits just below carbon in the periodic table so they have very similar characteristics.
You can see a picture of diamond: http://www.chemguide.co.uk/atoms/structures/diamond.GIF
and silicon dioxide:
http://www.chemguide.co.uk/inorganic/group4/sio2.gifScientists here http://www.kurzweilai.net/a-new-self-assembling-graphene-like-material-for-flat-semiconductors have made a material that looks a bit like graphene, in that it’s made up of hexagonal sheets, but it’s probably not very strong – it’s quite similar to the materials that I work with. The bonds to the nickel (the green spheres) will definitely not be as strong!
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