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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/59767
Long-time self-diffusion in disordered media
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Abstract
Long-time self di usion coe cient is calculated over a broad range of densities from computer
simulations of a two-dimensional system obeying Brownian dynamics and interacting through a
Yukawa pairwise potential. The behavior of the di usion under changes of strength of the potential
and density of particles is discussed and compared with bibliographical results. Furthermore, the
e ects of an external driving force and the presence of xed particles are also considered. It is found
that the di usion lowers with the density of particles, the strength of the potential and the presence
of xed particles. On the contrary, an external force favors the di usion. Despite the e ect of the external force, a jammed state can be reached if density and proportion of xed particles are high enough.
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Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Any: 2014, Tutor: Ignasi Pagonabarraga
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GONZÁLEZ, Laia (González Mena). Long-time self-diffusion in disordered media. [consulted: 10 of August of 2026]. Available at: https://hdl.handle.net/2445/59767