Confinement by Carbon Nanotubes Drastically Alters the Boiling and Critical Behavior of Water Droplets

Details Confinement by Carbon Nanotubes Drastically Alters the Boiling and Critical Behavior of Water Droplets Confinement by Carbon Nanotubes Drastically Alters the Boiling and Critical Behavior of Water Droplets

2012-02-05

arxiv.org/abs/1202.1008v1

Physics

Condensed Matter

Materials Science

Scientific paper

Vapor pressure grows rapidly above the boiling temperature, and past the critical point liquid droplets disintegrate. Our atomistic simulations show that this sequence of events is reversed inside carbon nanotubes (CNT). Droplets disintegrate first and at low temperature, while pressure remains small. The droplet disintegration temperature is independent of the CNT diameter. In contrast, depending on CNT diameter, a temperature that is much higher than the bulk boiling temperature is required to raise the internal pressure. The control over pressure by CNT size can be useful for therapeutic drug delivery.

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