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Graphene can be created by opening carbon nanotubes by cutting or etching. [268] In one such method, multi-walled carbon nanotubes were cut open in solution by action of potassium permanganate and sulfuric acid. [269] [270] In 2014, carbon nanotube-reinforced graphene was made via spin coating and annealing functionalized carbon nanotubes. [244]
Graphene can be created by cutting open carbon nanotubes. [99] In one such method multi-walled carbon nanotubes are cut open in solution by action of potassium permanganate and sulfuric acid. [100] In another method graphene nanoribbons were produced by plasma etching of nanotubes partly embedded in a polymer film. [101]
Owing to the ease with which fullerenes can encapsulate or be doped with other molecules and the transparency of nanotubes to electron beams, carbon peapods can also serve as nano-scale test tubes. After fullerenes containing reactants diffuse into an SWNT, a high-energy electron beam can be used to induce high reactivity, thus triggering ...
Carbon nanobuds are a newly created material combining two previously discovered allotropes of carbon: carbon nanotubes and fullerenes. In this new material, fullerene-like "buds" are covalently bonded to the outer sidewalls of the underlying carbon nanotube. This hybrid material has useful properties of both fullerenes and carbon nanotubes.
Carbon nanotube metal matrix composites (CNT-MMC) are an emerging class of new materials that mix carbon nanotubes into metals and metal alloys to take advantage of the high tensile strength and electrical conductivity of carbon nanotube materials.
Buckyballs and carbon nanotubes have been used as building blocks for a great variety of derivatives and larger structures, such as [27] Nested buckyballs ("carbon nano-onions" or "buckyonions") [35] proposed for lubricants; [36] Nested carbon nanotubes ("carbon megatubes") [37] Linked "ball-and-chain" dimers (two buckyballs linked by a carbon ...
Nanotubes were observed in 1991 in the carbon soot of graphite electrodes during an arc discharge, by using a current of 100 amps, that was intended to produce fullerenes. [2] However the first macroscopic production of carbon nanotubes was made in 1992 by two researchers at NEC's Fundamental Research Laboratory. [3]
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).
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