Ultracentrifugation of single-walled nanotubes
نویسندگان
چکیده
منابع مشابه
Dispersion of Single-Walled Carbon Nanotubes by Density Gradient Ultracentrifugation
Single-walled carbon nanotubes (SWNTs) have been of interest for their unique material properties. Their high thermal and electrical conductivity, metallic or semiconducting nature, as well as chemically stable structure make them ideal for numerous applications. However, development of potential applications has been limited due to the inability to consistently separate SWNTs by chirality, dia...
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Single-walled carbon nanotubes (SWCNTs) are hollow, long cylinders with extremely large aspect ratios, made of one atomic sheet of carbon atoms in a honeycomb lattice. They possess extraordinary thermal, mechanical, and electrical properties and are considered as one of the most promising nanomaterials for applications and basic research. This chapter describes the structural, electronic, vibra...
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We describe a novel single-walled carbon nanotube (SWNT) cutting method without introducing any structural defects on the tubes; namely, the finding that simple ultracentrifugation at 600 000g for the SWNTs coated with a cross-linked polymer formed by poly(N-isopropylacrylamide) (PNIPAM) or the polyethylene glycol-carrying PNIPAM copolymer provides shortened (<200 nm) SWNTs, which was revealed ...
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Pei Zhao, Erik Einarsson, Georgia Lagoudas, Junichiro Shiomi, Shohei Chiashi, Shigeo Maruyama Department of Mechanical Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan Global Center of Excellence for Mechanical Systems Innovation, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan Department of Bioengineering, Rice University 6100 Main Street...
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We present a systematic study of the effects of surfactants in the separation of single-walled carbon nanotubes (SWNTs) by density gradient ultracentrifugation (DGU). Through analysis of the buoyant densities, layer positions, and optical absorbance spectra of SWNT separation using the bile salt sodium deoxycholate (DOC) and the anionic salt sodium dodecyl sulfate (SDS), we clarify the roles an...
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ژورنال
عنوان ژورنال: Materials Today
سال: 2007
ISSN: 1369-7021
DOI: 10.1016/s1369-7021(07)70309-7