Pint Cary L, Xu Ya-Qiong, Pasquali Matteo, Hauge Robert H
Department of Physics and Astronomy, Rice University, Houston, Texas, USA.
ACS Nano. 2008 Sep 23;2(9):1871-8. doi: 10.1021/nn8003718.
Utilizing aligned carbon nanotube arrays grown from chemical vapor deposition, we present a highly scalable route toward the formation of ribbons and ultrathin transparent films directly from vertically aligned single-walled carbon nanotube arrays (SWNT carpets). To "lay-over" the aligned nanotubes to form a film, we use a roller which acts to compress the film and preserve the alignment of nanotubes within the film. As we demonstrate, we can control the nanotube-catalyst interaction, leading to highly efficient transfer of the film to virtually any host substrate by following growth with a controlled H(2)O vapor etch. In addition, we demonstrate our ability to grow carpets on patterned substrates leading to upright carpet lines, which can be rolled over to form transparent films composed of ultralong carbon nanotubes. This work demonstrates a highly scalable technique to form homogeneous, transparent films of aligned SWNTs that can be ultralong with absolutely no need for liquid phase SWNT processing.
利用通过化学气相沉积生长的对齐碳纳米管阵列，我们展示了一条高度可扩展的途径，可直接从垂直对齐的单壁碳纳米管阵列（SWNT地毯）形成带材和超薄透明薄膜。为了“铺设”对齐的纳米管以形成薄膜，我们使用一个滚筒，该滚筒用于压缩薄膜并保持薄膜内纳米管的对齐。正如我们所展示的，我们可以控制纳米管与催化剂的相互作用，通过在生长后进行受控的H₂O蒸汽蚀刻，从而实现将薄膜高效转移到几乎任何主体衬底上。此外，我们展示了在图案化衬底上生长地毯的能力，从而形成直立的地毯线，这些地毯线可以卷起来形成由超长碳纳米管组成的透明薄膜。这项工作展示了一种高度可扩展的技术，可形成对齐的SWNT均匀透明薄膜，这些薄膜可以是超长的，并且绝对无需进行液相SWNT处理。
