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Polyelectrolytes polarization in nonuniform electric fields

Author

Listed:
  • Farnoush Farahpour

    (Sharif University of Technology, Department of Physics, P. O. Box 11155-9161, Tehran, Iran)

  • Mohammad Reza Ejtehadi

    (Sharif University of Technology, Department of Physics, P. O. Box 11155-9161, Tehran, Iran)

  • Fathollah Varnik

    (Ruhr-Universitt Bochum, IC 02-505, Universittsstr. 150, 44801 Bochum, Germany)

Abstract

Stretching dynamics of polymers in microfluidics is of particular interest for polymer scientists. As a charged polymer, a polyelectrolyte (PE) can be deformed from its coiled equilibrium configuration to an extended chain by applying uniform or nonuniform electric fields. By means of hybrid lattice Boltzmann (LB)-molecular dynamics (MD) simulations, we investigate how the condensed counterions (CIs) around the PE contribute to the polymer stretching in inhomogeneous fields. As an application, we discuss the translocation phenomena and entropic traps, when the driving force is an applied external electric field.

Suggested Citation

  • Farnoush Farahpour & Mohammad Reza Ejtehadi & Fathollah Varnik, 2014. "Polyelectrolytes polarization in nonuniform electric fields," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 25(12), pages 1-9.
    • Handle: RePEc:wsi:ijmpcx:v:25:y:2014:i:12:n:s0129183114410101
    DOI: 10.1142/S0129183114410101
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