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Graphene is a form of the chemical element carbon. Well-known forms of carbon include the world's hardest material, diamond, and the soft black material known as the "lead" in a pencil, which is graphite. Graphite can be visualized as layers of carbon atoms stacked together in sheets with each sheet resembling a hexagonally woven chicken wire fence or a very thin honeycomb. Graphene is to all intents and purposes a single sheet from one of those stacks. It is thus one of the thinnest materials known, an atomic monolayer of carbon atoms.

It has become the focus of much research in recent years with its potential to weave the fabric of a future of molecular electronics devices because of its unique chemical, optical, and electronic properties.

Now, writing in the International Journal of Biomedical Nanoscience and Nanotechnology, a team from Malaysia reports on advances in how sheets might be modified for different applications by attaching different chemical groups to the sheets. Geoffrey Ijeomah and Fahmi Samsuri of the Universiti Malaysia Pahang, Felix Obite of the Universiti Teknologi Malaysia, and Mohamad Adzhar Md Zawawi of the Universiti Sains Malaysia, discuss the chemical functionalization of graphene with a view to its development as sensor materials for environmental monitoring, biomedical research, and medical diagnostics as well as in other areas.

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Category: Science
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