Propagation of Rayleigh traveling waves from a gas on a nanotube surface activates a macroscopic flow of the gas (or gases) that depends critically on the atomic mass of the gas. Our molecular dynamics simulations show that the surface waves are capable of actuating significant macroscopic flows of atomic and molecular hydrogen, helium, and a mixture of both gases both inside and outside carbon nanotubes (CNT). In addition, our simulations predict a new “nanoseparation” effect when a nanotube is filled with a mixture of two gases with different masses or placed inside a volume filled with a mixture of several gases with different masses. The mass selectivity of the nanopumping can be used to develop a highly selective filter for various gases. Gas flow rates, pumping, and separation efficiencies were calculated at various wave frequencies and phase velocities of the surface waves. The nanopumping effect was analyzed for its applicability to actuate nanofluids into fuel cells through carbon nanotubes.
Activation of Nanoflows for Fuel Cells
Manuscript received May 6, 2012; final manuscript received September 15, 2012; published online October 15, 2012. Assoc. Editor: Quan Wang.The United States Government retains, and by accepting the article for publication, the publisher acknowledges that the United States Government retains, for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government.
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Insepov, Z., and Miller, R. J. (October 15, 2012). "Activation of Nanoflows for Fuel Cells." ASME. J. Nanotechnol. Eng. Med. May 2012; 3(2): 025201. https://doi.org/10.1115/1.4007761
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