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Flame synthesis of carbon nanofibres and nanofibre composites containing encapsulated metal particles

Swarnendu Sen and Ishwar K Puri1

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We have synthesized carbon nanofibres (CNFs) in an ethylene–air flame on a stainless steel substrate. Ten-minute specimens consisted of both nodules and carbon micro- and nanofibres of various diameters up to {\sim }2\ntilde \micmu {\mathrm {m}} . There are two kinds of primary fibres. The first are of {\sim }100\mbox {--}200  nm thickness and show numerous kinks along their length. The second variety can have thicknesses of the order of {\sim }1\ntilde \micmu {\mathrm {m}} and can grow to a length of {\sim }50~\micmu {\mathrm {m}} . Nanofibre branching is also evident. The inclusion of periodic metal deposits in the nanofibres reveals a strategy by which it might be possible to encapsulate metal particles in order to form connected CNF networks.


PACS

81.16.-c Methods of nanofabrication and processing

61.46.-w Structure of nanoscale materials

68.47.De Metallic surfaces

Subjects

Surfaces, interfaces and thin films

Nanoscale science and low-D systems

Dates

Issue 3 (March 2004)

Received 31 July 2003, in final form 26 October 2003

Published 8 December 2003



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