Revealing the Small-Bundle Internal Structure of Vertically Aligned Single-Walled Carbon Nanotube Films†
نویسندگان
چکیده
منابع مشابه
The internal structure of vertically aligned single-walled carbon nanotube films
In this study, we investigated the internal structure of ’as-grown’ vertically aligned single-walled carbon nanotube (VA-SWNT) films by cross-sectional transmission electron microscopy (TEM). The VA-SWNTs were produced by the alcohol catalytic CVD method [1, 2], and transferred onto a TEM grid using a hot water technique [3]. The resulting freestanding VA-SWNT film was observed along the alignm...
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Here we discuss spectroscopic investigation and characterization of vertically aligned single-walled carbon nanotube (VA-SWNT) arrays, which were synthesized using the alcohol catalytic CVD method [1]. Growth of the VA-SWNTs was monitored using an in situ absorbance measurement [2], which provides information about the growth process. Primary methods employed were Resonance Raman and UV-Vis-NIR...
متن کاملAnisotropic electrical conduction of vertically-aligned single-walled carbon nanotube films
Anisotropic electrical conduction measurements have been carried out for thin films of vertically-aligned single-walled carbon nanotubes (VA-SWCNTs) grown by an alcohol catalytic CVD process. Combined with controlled synthesis and structure characterization by optical spectroscopy, the influence of the aligned structure on the electrical conduction has been identified. The out-of-plane conducti...
متن کاملGrowth of vertically aligned single-walled carbon nanotube films on quartz substrates and their optical anisotropy
Films of vertically aligned single-walled carbon nanotubes (SWNTs) with a few μm thickness were grown by catalytic chemical vapor deposition (CVD) on quartz substrates. Low-temperature CVD from ethanol was performed by using densely mono-dispersed Co-Mo catalyst of ≈ 1.0 – 2.0 nm prepared on quartz substrates by a dip-coating method. Continuous reduction of catalysts with Ar/H2 (3% H2) during C...
متن کاملGrowth mechanism and internal structure of vertically aligned single-walled carbon nanotubes.
An in situ optical absorbance technique was used to monitor the growth of vertically aligned single-walled carbon nanotubes (VA-SWNTs) at various temperatures and pressures. The effects of the growth temperature and ethanol pressure on the initial growth rate and catalyst lifetime were investigated. It was found that the ideal pressure for VA-SWNT synthesis changes with the growth temperature, ...
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ژورنال
عنوان ژورنال: The Journal of Physical Chemistry C
سال: 2007
ISSN: 1932-7447,1932-7455
DOI: 10.1021/jp071328i