K Tankeshwar and Sunita Srivastava 2007 Nanotechnology 18 485714 doi:10.1088/0957-4484/18/48/485714
K Tankeshwar1,3 and Sunita Srivastava2
Show affiliationsA dynamical model is proposed to study the effect of confinement down to nano-dimension on the self-diffusion coefficient. The model is built on the consideration that the confinement affects molecular motion. The model introduces the concept of a microscopic (local) self-diffusion coefficient which varies as a function of distance from the walls of the channel. As one moves towards the confining walls the self-diffusion coefficient decreases, affecting the fluidity of the fluid in a nano-channel. The macroscopic self-diffusion coefficient has also been found to be affected by the microscale/nanoscale confinement. The effect of confinement has been found to be more on denser fluid than on a dilute fluid. The denser fluid provides an additional artificial wall which further restricts the flow of fluid. The relevance of this work to the study of flow of fluid, like blood in arteries, has also been discussed.
66.10.C- Diffusion and thermal diffusion
Issue 48 (5 December 2007)
Received 12 August 2007, in final form 28 September 2007
Published 1 November 2007
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Takashi Shinzato and Yoshiyuki Kabashima 2008 J. Phys. A: Math. Theor. 41 324013
R Siquieri et al 2009 J. Phys.: Condens. Matter 21 464112
Jonathan R Gair et al 2008 Class. Quantum Grav. 25 184030