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Direct growth of 100 mm long, semiconducting triple‐walled carbon nanotubes (TWNTs) on Si substrates by chemical vapor depoistion is reported. By tailoring the temperature for a certain gas flow rate, a yield of nearly 90% of centimeter‐long TWNTs is obtained. The TWNTs show an unprecedented structural homogeneity, in which each shell maintains a constant chiral index extending over a very large distance...
100 mm long semiconducting triple‐walled carbon nanotubes (TWNTs) with uniform sections of up to 35 mm having the same chirality index, can be obtained by a gas‐flow‐directed growth method, as reported by Weizhong Qian and co‐workers on p. 1867. The chiral angle distributions of the TWNTs were dominantly between 20° and 30°. The maximum current density sustained by each shell could reach up to 3.7...
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