Publications [#232889] of Jie Liu

Journal Articles

1. Ding, L; Zhou, W; McNicholas, TP; Wang, J; Chu, H; Li, Y; Liu, J, Direct observation of the strong interaction between carbon nanotubes and quartz substrate, Nano Research, vol. 2 no. 11 (January, 2009), pp. 903-910, Springer Nature, ISSN 1998-0124 [doi]
   (last updated on 2026/01/16)

   Abstract:
   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 "up-shifts" of G-band frequencies in the Raman spectra have been found for the aligned SWNTs. A welldesigned control experiment shows that the G-band "up-shifts" 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. © Tsinghua University Press and Springer-Verlag 2009.