Filling carbon nanotubes

被引:130
作者
Ugarte, D
Stockli, T
Bonard, JM
Chatelain, A
de Heer, WA
机构
[1] Lab Nacl Luz Sincrotron, CNPq, MCT, BR-13083970 Campinas, SP, Brazil
[2] Ecole Polytech Fed Lausanne, Dept Phys, Inst Phys Expt, CH-1015 Lausanne, Switzerland
[3] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA
来源
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1998年 / 67卷 / 01期
关键词
D O I
10.1007/s003390050744
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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.
引用
收藏
页码:101 / 105
页数:5
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