Volume 95, Number 2, July 2011
|Number of page(s)||5|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||24 June 2011|
Genesis of diamond nanotubes from carbon nanotubes
Institute for Functional Nanomaterials, University of Puerto Rico - Rio Piedras Campus, San Juan, Puerto Rico 00931, USA
2 Department of Physics, University of Puerto Rico - Rio Piedras Campus, San Juan, Puerto Rico 00931, USA
3 Department of Chemistry, University of Puerto Rico - Rio Piedras Campus, San Juan, Puerto Rico 00931, USA
4 Department of Earth Science, University of Cambridge - Cambridge CB2 1PZ, UK, EU
Accepted: 25 May 2011
We synthesized sp3-rich crystalline tubular structures, referred to as diamond nanotubes (DNTs), by hot-filament chemical vapor deposition and characterized them using SEM, TEM, EELS, and Raman spectroscopy. The images and spectra indicate the formation of DNTs with internal diameter of about 7–10 nm and external diameter of about 20–30 nm. During the fabrication process, CNTs form first and give way to the synthesis of DNTs. The DNTs show good field emission properties and enhanced temporal stability as compared to CNTs.
PACS: 81.07.De – Nanotubes / 79.70.+q – Field emission, ionization, evaporation, and desorption
© EPLA, 2011
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