Kinetic growth of field-oriented chains in dipolar colloidal solutions

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dc.creatorMiguel, M. -Carmen
dc.creatorPastor-Satorras, R.
dc.date1998-10-16
dc.date.accessioned2026-07-07T03:11:44Z
dc.date.available2026-07-07T03:11:44Z
dc.descriptionExperimental studies on the irreversible growth of field-induced chains of dipolar particles suggest an asymptotic power-law behavior of several relevant quantities. We introduce a Monte Carlo model of chain growth that explicitly incorporates the anisotropic diffusion characteristic of a rod-like object. Assuming a simple power-law form for the mean cluster size, $S(t) \sim t^z$, the results of our model are in good agreement with the experimental measurements of the dynamic exponent $z$. Nevertheless, an alternative scenario, including logarithmic corrections to the standard power-law behavior, provides a better and more insightful interpretation of the anomalous dynamic exponent. In contrast to some experimental findings, we do not observe any dependence of the exponents on the volume fraction of particles $ϕ$. Finite-size effects are also explored by simulating very long time evolutions or highly concentrated systems. Two different behaviors are found, namely, saturation and a crossover to a quasi one-dimensional regime.
dc.description10 pages, REVTEX, 15 eps figures. Phys. Rev. E (in press)
dc.identifierhttps://arxiv.org/abs/cond-mat/9810193
dc.identifierhttp://arxiv.org/abs/cond-mat/9810193
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28691
dc.subjectStatistical Mechanics
dc.subjectSoft Condensed Matter
dc.titleKinetic growth of field-oriented chains in dipolar colloidal solutions
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