Bulk synthesis of linear carbon chains confined inside single-wall carbon nanotubes by vacuum discharge |
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| Authors: | Satoshi Toma Koji Asaka Masaru Irita Yahachi Saito |
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| Institution: | 1. Department of Applied Physics, Nagoya University, Nagoya, Japan;2. Department of Applied Physics, Nagoya University, Nagoya, Japan
Venture Business Laboratory, Nagoya University, Nagoya, Japan |
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| Abstract: | Carbyne, an infinite carbon chain, has attracted much interest and induced significant controversy for many decades. Recently, the presence of linear carbon chains (LCCs), which were confined stably inside double-wall carbon nanotubes (DWCNTs) and multiwall carbon nanotubes (MWCNTs), has been reported. In this study, we present a novel method to produce LCCs in a film of carbon nanotubes (CNTs). Our transmission electron microscopy and Raman spectroscopy revealed the formation of a bulk amount of LCCs after electric discharge of CNT films, which were used as field emission cathodes. The LCCs were confined inside single-wall CNTs as well as DWCNTs. Furthermore, two or three LCCs in parallel with each other are encapsulated when the inner diameter of CNT is larger than approximately 1.1 nm. |
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| Keywords: | carbon nanotube carbyne field emission linear carbon chain vacuum discharge |
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