By a News Reporter-Staff News Editor at Physics Week -- New research on Nanotubes is the subject of a report. According to news reporting originating in Perugia, Italy, by VerticalNews journalists, research stated, "On one hand, classical Monte Carlo and molecular dynamics simulations have been very useful in the study of liquids in nanotubes, enabling a wide variety of properties to be calculated in intuitive agreement with experiments. On the other hand, recent studies indicate that the theory of continuum breaks down only at the nanometer level; consequently flows through nanotubes still can be investigated with Navier-Stokes equations if we take suitable boundary conditions into account."
The news reporters obtained a quote from the research from the University of Perugia, "The aim of this paper is to study the statics and dynamics of liquids in nanotubes by using methods of nonlinear continuum mechanics. We assume that the nanotube is filled with only a liquid phase; by using a second gradient theory the static profile of the liquid density in the tube is analytically obtained and compared with the profile issued from molecular dynamics simulation. Inside the tube there are two domains: a thin layer near the solid wall where the liquid density is non-uniform and a central core where the liquid density is uniform. In the dynamic case a closed form analytic solution seems to be no more possible, but by a scaling argument it is shown that, in the tube, two distinct domains connected at their frontiers still exist."
According to the news reporters, the research concluded: "The thin inhomogeneous layer near the solid wall can be interpreted in relation with the Navier length when the liquid slips on the boundary as it is expected by experiments and molecular dynamics calculations."
For more information on this research see: Scaling Navier-Stokes equation in nanotubes. Physics of Fluids, 2013;25(8):149-165. Physics of Fluids can be contacted at: Amer Inst Physics, Circulation & Fulfillment Div, 2 Huntington Quadrangle, Ste 1 N O 1, Melville, NY 11747-4501, USA. (American Institute of Physics - www.aip.org/; Physics of Fluids - pof.aip.org/)
Our news correspondents report that additional information may be obtained by contacting M. Garajeu, University of Perugia, Dipartimento Ingn Ind, I-06125 Perugia, Italy. Additional authors for this research include H. Gouin and G. Saccomandi.
Keywords for this news article include: Italy, Europe, Perugia, Physics, Nanotechnology, Molecular Dynamics, Emerging Technologies
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