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Room temperature flashing Ratcheting in nano-channels

Author

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  • Aakash,
  • Bhattacharyay, A.

Abstract

We consider surface-induced ratcheting transport of particles in nano-channels, particularly at room temperature. We show that at room temperature it is possible to achieve ratcheting of about 10 nm size particles in a nano-channel of about 100 nm width. The typical ratcheting velocity in such a case could be of the order of a few hundred nano-meter when the surface undulations are of a wavelength of a few hundred nano-meter and of the amplitude of a few tens of nano-meter. At room temperature, the viscosity of the fluid enabling such transport in the nano-channels comes out to be that of water. We show here a considerably large effect under realistic conditions which could be used for application in efficient filtration of particles and such processes probably are in use in biological systems which typically work at room temperature.

Suggested Citation

  • Aakash, & Bhattacharyay, A., 2023. "Room temperature flashing Ratcheting in nano-channels," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 622(C).
    • Handle: RePEc:eee:phsmap:v:622:y:2023:i:c:s0378437123004442
    DOI: 10.1016/j.physa.2023.128889
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    References listed on IDEAS

    as
    1. Bhattacharyay, A., 2012. "Directed transport in equilibrium: A model study," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 391(4), pages 1111-1119.
    2. Sander J. Tans & Michel H. Devoret & Hongjie Dai & Andreas Thess & Richard E. Smalley & L. J. Geerligs & Cees Dekker, 1997. "Individual single-wall carbon nanotubes as quantum wires," Nature, Nature, vol. 386(6624), pages 474-477, April.
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