Attoliter fluid experiments in individual closed-end carbon nanotubes: Liquid film and fluid interface dynamics


Megaridis C., Yazicioglu A. , Libera J., Gogotsi Y.

PHYSICS OF FLUIDS, vol.14, no.2, 2002 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Letter
  • Volume: 14 Issue: 2
  • Publication Date: 2002
  • Doi Number: 10.1063/1.1429249
  • Title of Journal : PHYSICS OF FLUIDS

Abstract

A hydrothermal method of catalytic nanotube synthesis has been shown to produce high-aspect-ratio, multiwall, capped carbon nanotubes, which are hollow and contain a high-pressure encapsulated aqueous multicomponent fluid displaying clearly segregated liquid and gas by means of well-defined curved menisci. Thermal experiments are performed using electron irradiation as a means of heating the contents of individual nanotubes in the high vacuum of a transmission electron microscope (TEM). The experiments clearly demonstrate that TEM can be used to resolve fluid interface motion in nanochannels. Good wettability of the inner carbon walls by the water-based fluid is shown. Fully reversible interface dynamic phenomena are visualized, and an attempt is made to explain the origin of this fine-scale motion. Experimental evidence is presented of nanometer-scale liquid films rapidly moving fluid along the nanochannel walls with velocities 0.5 mum/s or higher. (C) 2002 American Institute of Physics.