Ding, Lei and Zhou, Weiwei and McNicholas, Thomas P. and Wang, Jinyong and Chu, Haibin and Li, Yan and Liu, Jie (2009) Direct observation of the strong interaction between carbon nanotubes and quartz substrate. Nano Research, 2 (11). pp. 903-910. ISSN 1998-0124 (print version) ISSN: 1998-0000 (electronic version)
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Official URL: http://www.springerlink.com/content/g25x1314055361...
We present a chemical vapor deposition (CVD) method for the growth of uniform single-walled carbon nanotube (SWNT) arrays on a stable temperature (ST)-cut single crystal quartz substrate using a mixture of methanol and ethanol as carbon source. It is found that introducing methanol during the growth can improve the density and the length of the well-aligned SWNTs in the arrays as well as increase the SWNT/quartz interaction. Obvious âup-shiftsâ of G-band frequencies in the Raman spectra have been found for the aligned SWNTs. A welldesigned control experiment shows that the G-band âup-shiftsâ originate from the strong interaction between SWNTs and the quartz substrate. It is believed that exploring this interaction will help to elucidate the growth mechanism; ultimately, this will help realize the promise of controlling the chirality of SWNTs.
|Subjects:||Material Science > Nanochemistry|
|Deposited By:||M T V|
|Deposited On:||30 Nov 2009 16:33|
|Last Modified:||30 Nov 2009 16:33|
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