Ultrahigh Density Modulation of Aligned Single-Walled Carbon Nanotube Arrays
文献类型：期刊论文
| 作者 | Wu, Bin1; Geng, Dechao1; Guo, Yunlong1; Huang, Liping1; Chen, Jianyi1; Xue, Yunzhou1; Yu, Gui1; Liu, Yunqi1; Kajiura, Hisashi2; Li, Yongming2 |
| 刊名 | NANO RESEARCH
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 4期号:10页码:931-937 |
| 关键词 | Swnt Density Chemical Vapor Deposition Periodic Growth Growth Mechanism |
| ISSN号 | 1998-0124 |
| DOI | 10.1007/s12274-011-0149-2 |
| 英文摘要 | Controlling the densities of aligned single-walled carbon nanotube arrays (SWNTs) on ST-cut quartz is a critical step in various applications of these materials. However the growth mechanism for tuning SWNT density using the chemical vapor deposition (CVD) method is still not well understood, preventing the development of efficient ways to obtain the desired results. Here we report a general "periodic" approach that achieves ultrahigh density modulation of SWNT arrays on ST-cut quartz substrates-with densities increased by up to similar to 60 times compared with conventional methods using the same catalyst densities-by varying the CH4 gas "off" time. This approach is applicable to a wide range of initial catalyst densities, substrates, catalyst types and growth conditions. We propose a general mechanism for the catalyst size-dependent nucleation of SWNTs associated with different free carbon concentrations, which explains all the observations. Moreover, the validity of the model is supported by systematic experiments involving the variation of key parameters in the "periodic" CVD approach. |
| 语种 | 英语 |
| WOS记录号 | WOS:000296649100002 |
| 出版者 | TSINGHUA UNIV PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72089]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu, Yunqi |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Sony Corp, Mat Lab, Kanagawa 2430021, Japan |
| 推荐引用方式 GB/T 7714 | Wu, Bin,Geng, Dechao,Guo, Yunlong,et al. Ultrahigh Density Modulation of Aligned Single-Walled Carbon Nanotube Arrays[J]. NANO RESEARCH,2011,4(10):931-937. |
| APA | Wu, Bin.,Geng, Dechao.,Guo, Yunlong.,Huang, Liping.,Chen, Jianyi.,...&Li, Yongming.(2011).Ultrahigh Density Modulation of Aligned Single-Walled Carbon Nanotube Arrays.NANO RESEARCH,4(10),931-937. |
| MLA | Wu, Bin,et al."Ultrahigh Density Modulation of Aligned Single-Walled Carbon Nanotube Arrays".NANO RESEARCH 4.10(2011):931-937. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。