Abstract
In this Letter, we report that after oxidation in air and reduction in hydrogen the existing carbon nanotube arrays can be used as a substrate to grow another nanotube array. The two arrays are connected through a thin catalyst layer. Micro-Raman study of these two nanotube arrays shows that they have different characteristic spectra. Besides the small shift in the peak frequencies of the two kinds of arrays in Micro-Raman spectra, we have observed changes in the relative intensities of D, G and D′ lines and proposed the mechanism of this phenomenon.
Original language | English |
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Pages (from-to) | 222-226 |
Number of pages | 5 |
Journal | Chemical Physics Letters |
Volume | 340 |
Issue number | 3-4 |
DOIs | |
State | Published - 1 Jun 2001 |
Externally published | Yes |