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Materials science

Single-walled 4 Å carbon nanotube arrays

Abstract

Here we describe the smallest carbon nanotubes possible1, prepared by the pyrolysis of tripropylamine molecules in the channels of porous zeolite AlPO4-5 (AFI) single crystals2. These uniformly sized carbon nanotubes have a diameter of 0.4 nm and are the best example of one-dimensional quantum wires.

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Figure 1: An as-grown zeolite AlPO4-5 (AFI) single crystal.
Figure 2: High-resolution transmission electron microscope image showing single-walled carbon nanotubes (indicated by T and large arrowheads) coexisting with graphite in raft-like stripes (G).

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Correspondence to Z. K. Tang.

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Wang, N., Tang, Z., Li, G. et al. Single-walled 4 Å carbon nanotube arrays. Nature 408, 50–51 (2000). https://doi.org/10.1038/35040702

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