Filling carbon nanotubes
Filling carbon nanotubes
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DOI：
10.1007/s003390050744
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发表时间：
1998-07-01
影响因子：
2.7
通讯作者：
de Heer, WA
中科院分区：
文献类型：
--
作者：
Ugarte, D;Stockli, T;de Heer, WA
用选定的材料填充中空碳纳米管开辟了产生近一维纳米结构的新可能性。填充纳米管的一种简单方法是使用毛细力。在这里，我们研究了金属盐的润湿性和毛细作用。首先，通过在空气中氧化打开纳米管;随后，将纳米管浸入熔融盐中。我们已经观察到的尺寸依赖性填充表明降低的腔-盐界面能与直径减小。通过将润湿条件表示为极化率的函数，可以预测不同材料毛细填充的阈值直径。
Filling hollow carbon nanotubes with chosen materials opens new possibilities of generating nearly one-dimensional nanostrutures. One simple approach to fill nanotubes is to use capillarity forces. Here, we have studied the wetting and capillarity by metal salts. First, nanotubes were opened by oxidation in air; subsequently, nanotubes were immersed in molten salts. We have observed a size-dependence filling indicating a lowering of the cavity-salt interface energy with decreasing diameter. By expressing the wetting conditions as a function of polarizabilities, it is possible to predict the threshold diameter for capillary filling of different materials.