External and internal wetting of carbon nanotubes with organic liquids

被引：45

作者：

Barber, AH ^{[1
]}

Cohen, SR ^{[1
]}

Wagner, HD ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Mat & Interfaces, IL-76100 Rehovot, Israel

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.71.115443

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Individual multiwalled carbon nanotubes were controllably wetted by polyethylene glycol, glycerol, and water. A Wilhelmy force balance approach was used to calculate contact angles at the nanotube-polyethylene glycol and nanotube-glycerol interfaces, allowing examination of the contact angle dependence on the nanotube diameter. Water, however, exhibited a significantly larger interaction with the nanotube, which could only be explained by allowing for internal wetting of the open carbon nanotube structure. This internal wetting angle is smaller than the external one.

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页数：5

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