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Carbon nanotubes are the strongest and stiffest materials yet discovered in terms of tensile strength and elastic modulus respectively. This strength results from the covalent sp 2 bonds formed between the individual carbon atoms. In 2000, a multi-walled carbon nanotube was tested to have a tensile strength of 63 gigapascals (9,100,000 psi).
The strength and flexibility of carbon nanotubes makes them of potential use in controlling other nanoscale structures, which suggests they will have an important role in nanotechnology engineering. [239] The highest tensile strength of an individual multi-walled carbon nanotube has been tested to be 63 GPa. [56]
BCN nanotube, composed of comparable amounts of boron, carbon, and nitrogen atoms [4] Boron nitride nanotube, a polymorph of boron nitride [5] [6] Carbon nanotube, includes general nanotube terminology and diagrams [7] DNA nanotube, a two-dimensional lattice which curves back upon itself, [8] somewhat similar in size and shape to a carbon nanotube
Carbon nanotubes in particular have been intensely studied due to their exceptional intrinsic mechanical properties and low densities. In particular carbon nanotubes have some of the highest measured tensile stiffnesses and strengths of any material due to the strong covalent sp 2 bonds between carbon atoms. However, in order to take advantage ...
This type of composites can be classified as continuous and non-continuous reinforced materials. One of the more important nanocomposites is Carbon nanotube metal matrix composites, which is an emerging new material that is being developed to take advantage of the high tensile strength and electrical conductivity of carbon nanotube materials. [12]
Although BNNTs and CNTs share similar tensile strength properties of circa 100 times stronger than steel and 50 times stronger than industrial-grade carbon fibre, [8] BNNTs can withstand high temperatures of up to 900 °C. [9] as opposed to CNTs which remain stable up to temperatures of 400 °C, [10] and are also capable of absorbing radiation ...
The first nanotube ropes (20 mm long) whose tensile strength was published (in 2000) had a strength of 3.6 GPa, still well below their theoretical limit. [41] The density is different depending on the manufacturing method, and the lowest value is 0.037 or 0.55 (solid). [37]
MWNT's cross-sectional area offers an elastic modulus approaching 1 TPa and a tensile strength of 100 GPa, over 10-fold higher than any industrial fiber. MWNTs are typically metallic and can carry currents of up to 10 9 A cm −2. SWNTs can display thermal conductivity of 3500 W m −1 K −1, exceeding that of diamond. [2]