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J. Appl. Phys. 93, 2153 (2003); http://dx.doi.org/10.1063/1.1536732 (4 pages)
Neat macroscopic membranes of aligned carbon nanotubes
(Received 4 September 2002; accepted 18 November 2002)
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Add to FacebookThick macroscopic membranes of magnetically aligned single-wall carbon nanotubes (SWNT) have been produced via high pressure filtration of aqueous surfactant-suspended SWNT in a magnetic field, resulting in membrane thicknesses of 10 μm and surface areas of 125 cm2. Field strengths of 7 and 25 T were used. Polarized Raman spectroscopy shows an anisotropy of (2.5±0.5), indicating good alignment. A similar degree of alignment was seen at both intensities of magnetic field. Furthermore, the degree of alignment is comparable to that achieved in previous work that produced smaller and thinner membranes at 25 T. The membranes also exhibit uniform anisotropy across their surface and throughout their thickness. © 2003 American Institute of Physics.
© 2003 American Institute of Physics
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