the discovery, structure, properties and application of carbon nanotubes by victoria riabicheva...

THE DISCOVERY, STRUCTURE, PROPERTIES AND APPLICATION OF

CARBON NANOTUBES

by Victoria Riabicheva Olexandra Tupalo

English supervisor- Ekaterina KuznetsovaScience 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

Thank you for your attention