Carbon nanotube - Wikipedia
A scanning electron microscopy image of carbon nanotube bundles. Carbon nanotubes are the strongest and stiffest materials yet discovered in terms of tensile strength and elastic modulus. This strength results from the covalent sp 2 bonds formed between the individual carbon atoms.
Carbon nanotube | Properties & Uses | Britannica
carbon nanotube, nanoscale hollow tubes composed of carbon atoms. The cylindrical carbon molecules feature high aspect ratios (length-to-diameter values) typically above 10 3 , with diameters from about 1 nanometer up to tens of nanometers and lengths up to millimeters.
Carbon nanotubes – what they are, how they are made, what
Carbon nanotubes are cylindrical molecules that consist of rolled-up sheets of single-layer carbon atoms (graphene); they possess unique properties like high aspect ratio, mechanical strength, electrical and thermal conductivity, chemical stability, …
A review on carbon nanotube: An overview of synthesis, …
2021年6月1日 · A foremost and inimitable invention in the part of nanotechnology is carbon nanotubes (CNT). Crystal structures are nearly analogous to the nuclear atomic arrangement of graphite and diamond. While graphite belongs to sp 2 – bonded carbon whereas diamond is owned by sp 3 – hybridized carbon. The evolution of CNTs began in 1991.
Carbon Nanotube - an overview | ScienceDirect Topics
Carbon nanotubes (CNT) (Fig. 1) are allotropic forms of elemental carbon, they consist of hexagonal sheets of single-layer hybridized carbon atoms rolled-up in cylindrical form. A carbon nanotube has a diameter of few nanometres and a length of several micrometres.
Carbon Nanotubes: Definition, Properties, Types, and 10 Reliable ...
2023年3月20日 · Carbon nanotubes (CNT), cylindrical-shaped allotropes of carbon, are nanomaterials that possess unique optical, electronic, chemical, and mechanical properties. It is made up of nanometer-sized seamless cylinders composed of stacked cylindrical graphitic sheets (also known as graphene) and is mostly produced on a large scale by chemical vapor ...
Carbon Nanotubes and Related Nanomaterials: Critical Advances …
2018年12月5日 · Carbon nanotubes (CNTs) are a promising material for flexible electronics, both as the channel material in field-effect transistors (FETs) and as transparent electrodes, due to their high intrinsic carrier mobility, cond., and mech. flexibility.
Carbon nanotube transistors: Making electronics from molecules
2022年11月17日 · Semiconducting carbon nanotubes are robust molecules with nanometer-scale diameters that can be used in field-effect transistors, from larger thin-film implementation to devices that work in conjunction with silicon electronics, and can potentially be used as a platform for high-performance digital electronics as well as radio-frequency and ...
Carbon nanotubes: a review on properties, synthesis methods …
2021年1月23日 · Carbon nanotubes are one of the most striking discoveries in the field of nanotechnology as carbon nanotubes are the member of the fullerenes structure family. Their types, chemical, physical and electrochemical properties …
Human and environmental safety of carbon nanotubes across …
2023年11月23日 · Carbon nanotubes are a large family of carbon-based hollow cylindrical structures with unique physicochemical properties that have motivated research for diverse applications; some have reached...