Scalable growth of single-walled carbon nanotubes with a highly uniform structure
نویسندگان
چکیده
منابع مشابه
Continued growth of single-walled carbon nanotubes.
We demonstrate the continued growth of single-walled carbon nanotubes (SWNTs) from ordered arrays of open-ended SWNTs in a way analogous to epitaxy. Nanometer-sized metal catalysts were docked to the SWNT open ends and subsequently activated to restart growth. SWNTs thus grown inherit the diameters and chirality from the seeded SWNTs, as indicated by the closely matched frequencies of Raman rad...
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Single-walled carbon nanotubes can be classified as either metallic or semiconducting, depending on their conductivity, which is determined by their chirality. Existing synthesis methods cannot controllably grow nanotubes with a specific type of conductivity. By varying the noble gas ambient during thermal annealing of the catalyst, and in combination with oxidative and reductive species, we al...
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Recent Rayleigh scattering measurements show that all single-walled carbon nanotubes have a peak optical conductivity of approximately 8 e2/h, independent of radius, chiral angle, or whether the nanotube is semiconducting or metallic [D. Y. Joh et al., Nat. Nanotechnol. 6, 51 (2011)]. We show that this uniform peak conductivity is a consequence of the relativistic band structure and strength of...
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One of the difficulties in developing practical nanotube-based devices is the large-scale production of aligned carbon nanotubes (CNTs). Due to their novel electronic and thermal properties, single-walled nanotubes (SWNTs) show great potential for use a variety of applications . The alignment of SWNTs has been reported, but only parallel to the substrate in the presence of strong electric or ma...
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ژورنال
عنوان ژورنال: Nanoscale
سال: 2020
ISSN: 2040-3364,2040-3372
DOI: 10.1039/d0nr01919d