Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/18851
Kinetic growth of field-oriented chains in dipolar colloidal solutions
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
Experimental 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 $\phi$. 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.
Matèries (anglès)
Citació
Citació
MIGUEL LÓPEZ, María del carmen, PASTOR-SATORRAS, R. (romualdo). Kinetic growth of field-oriented chains in dipolar colloidal solutions. _Physical Review E_. 1999. Vol. 59, núm. 1, pàgs. 826-834. [consulta: 25 de febrer de 2026]. ISSN: 1063-651X. [Disponible a: https://hdl.handle.net/2445/18851]