E.Moutsou T.A Kuznetsova / Grammar & Vocabulary for the RSE / Teacher's book
THE DISCOVERY, STRUCTURE, PROPERTIES AND APPLICATION OF CARBON NANOTUBES by Victoria Riabicheva...
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Transcript of 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