Graphite pencil and graphene. After years of research in 2004,the Russian physicists Andre Geim and Konstantin Novoselov based at the Manchester University were the first to isolate graphene using sellotape and lead pencils. The graphite in a pencil consists of millions of layers of carbon atoms arranged in a hexagonal pattern. These layers are not tightly bonded (hence the ability of graphite to leave layers on paper). Using a method involving adhesive tape,they were able to isolate a single layer | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Brook, Robert |
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