THE DISCOVERY, STRUCTURE, PROPERTIES AND APPLICATION OF CARBON NANOTUBES by Victoria Riabicheva Olexandra Tupalo English supervisor- Ekaterina Kuznetsova Science supervisor- Oleg Uzlov

Carbon nanotubes are molecular- scale tubes of graphitic carbon with outstanding properties.

the Japanese scientist Sumio Iijima discovered fullerene-related carbon nanotubes in 1991

 armchair  zig-zag  chiral There are three distinct ways in which a graphene sheet can be rolled into a tube

Synthesis  The arc-evaporation method  The catalyst  Laser ablation plasma (violet) improves the growth conditions for carbon nanotubes in this chemical vapor deposition chamber. A heating element (red) provides the necessary substrate temperature

Properties  tensile strength 63 GPa  can withstand a pressure up to 24GPa without deformation  moderate semiconductor

Application  Textiles  Concrete  Polyethylene  Sports equipment  Space elevator  Synthetic muscles  Fire protection  Air pollution filter  Water filter

Defects  High levels of such defects can lower the tensile strength by up to 85%  Toxicity  Stone-Wales defect

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