Highly Dense and Perfectly Aligned Single-Walled Carbon Nanotubes Fabricated by Diamond Wire Drawing Dies

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• 作者：Guangtong Liu ; Yuanchun Zhao ; Ke Deng ; Zheng Liu ; Weiguo Chu ; Jingran Chen ; Yanlian Yang ; Kaihong Zheng ; Haibo Huang ; Wenjun Ma ; Li Song ; Haifang Yang ; Changzhi Gu ; Guanghui Rao ; Chen Wang ; Sishen Xie
• 刊名：Nano Letters
• 出版年：2008
• 出版时间：April 2008
• 年：2008
• 卷：8
• 期：4
• 页码：1071 - 1075
• 全文大小：1348K
• 年卷期：v.8,no.4(April 2008)
• ISSN：1530-6992

文摘

We have developed a low-cost and effective method to align single-walled carbon nanotubes (SWNTs) using a series of diamond wire drawing dies. The obtained SWNTs are highly dense and perfectly aligned. X-ray diffraction (XRD) indicates that the highly dense and perfectly aligned SWNTs (HDPA-SWNTs) form a two-dimensional triangular lattice with a lattice constant of 19.62 Å. We observe a sharp (002) reflection in the XRD pattern, which should be ascribed to an intertube spacing 3.39 Å of adjacent SWNTs. Raman spectra reveal that the radical breath mode (RBM) of SWNTs with larger diameter in the HDPA-SWNTs is suppressed compared with that of as-grown SWNTs. The HDPA-SWNTs have a large density, ~1.09 g/cm³, and a low resistivity, ~2 mΩ cm, at room temperature, as well as a large response to light illumination.