Uptake and withdrawal of droplets from carbon nanotubes.
Uptake and withdrawal of droplets from carbon nanotubes.
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DOI：
10.1039/c0nr00477d
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发表时间：
2011-01
期刊：
影响因子：
6.7
通讯作者：
D. Schebarchov;S. Hendy
中科院分区：
文献类型：
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作者：
D. Schebarchov;S. Hendy
我们用简单的理论论证和分子动力学模拟来描述液滴从碳纳米管中吸收和提取的最新研究。首先，考虑了液滴吸收和释放的热力学，并通过模拟进行了验证。我们表明，作用在液滴上的拉普拉斯压力有助于毛细管吸收，允许足够小的非润湿液滴被吸收。然后，我们演示了如何利用碳纳米管作为纳米吸管来吸收和释放非润湿流体的液滴。最后，我们扩展了Lucas-Washburn模型来处理液滴毛细管吸收的动力学，并通过与分子动力学模拟的比较再次验证了这一点。
We give an account of recent studies of droplet uptake and withdrawal from carbon nanotubes using simple theoretical arguments and molecular dynamics simulations. Firstly, the thermodynamics of droplet uptake and release is considered and tested via simulation. We show that the Laplace pressure acting on a droplet assists capillary uptake, allowing sufficiently small non-wetting droplets to be absorbed. We then demonstrate how the uptake and release of droplets of non-wetting fluids can be exploited for the use of carbon nanotubes as nanopipettes. Finally, we extend the Lucas-Washburn model to deal with the dynamics of droplet capillary uptake, and again test this by comparison with molecular dynamics simulations.