Purification of Single-Walled Carbon Nanotubes Based on Thermocapillary Flow
Purification of Single-Walled Carbon Nanotubes Based on Thermocapillary Flow
复制标题
基于热毛细管流的单壁碳纳米管纯化
DOI：
10.1115/1.4030330
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发表时间：
2015-07
影响因子：
2.6
通讯作者：
Huang Yonggang
中科院分区：
文献类型：
--
作者：
Song Jizhou;Lu Chaofeng;Jin Sung Hun;Dunham Simon N.;Xie Xu;Rogers John A.;Huang Yonggang
单壁碳纳米管（SWNTs）由于其优异的电学性能和许多有前景的应用而引起了电子材料研究界的极大兴趣。然而，单壁碳纳米管是金属管和半导体管的混合物，这种异质性阻碍了它们在高性能电子产品中的实际应用。最近开发的基于薄膜涂层纳米级热毛细流动的纯化技术可以完全消除生长阵列中的金属单壁碳纳米管。我们分析研究了热毛细流动净化单壁碳纳米管，并根据几何形状（如膜厚度）、材料（如导热性和粘度）和负载（如功率密度）参数建立了膜厚分布的简单标度规律。结果表明，归一化厚度轮廓只依赖于一个无量纲参数：归一化功率密度。这些发现可以作为流程优化的有用设计指南。
Single-walled carbon nanotubes (SWNTs) are of significant interest in the electronic materials research community due to their excellent electrical properties and many promising applications. However, SWNTs grow as mixture of both metallic and semiconducting tubes and this heterogeneity frustrates their practical use in high performance electronics. Recently developed purification techniques based on nanoscale thermocapillary flow of thin film overcoats enables complete elimination of metallic SWNTs from as-grown arrays. We studied the thermocapillary flow to purify SWNTs analytically and established a simple scaling law for the film thickness profile in terms of the geometry (e.g., film thickness), material (e.g., thermal conductivity and viscosity), and loading (e.g., power density) parameters. The results show that the normalized thickness profile only depends on one nondimensional parameter: the normalized power density. These findings may serve as useful design guidelines for process optimization.
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影响因子：
3.3
作者：
M. Wulf;S. Michel;W. Jenschke;P. Uhlmann;K. Grundke
通讯作者：
M. Wulf;S. Michel;W. Jenschke;P. Uhlmann;K. Grundke
影响因子：
9.9
作者：
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影响因子：
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作者：
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通讯作者：
Pop, Eric
影响因子：
3.5
作者：
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影响因子：
17.1
作者：
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Frank Du;J. Felts;Xu Xie;Jizhou Song;Yuhang Li;M. Rosenberger;A. Islam;S. Jin;S. Dunham