Nondiffusive Brownian motion of deformable particles: Breakdown of the "long-time tail"

Sándalo Roldán-Vargas, Miguel Peláez-Fernández, Ramon Barnadas-Rodríguez, Manuel Quesada-Pérez, Joan Estelrich, José Callejas-Fernández

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

We study the nondiffusive Brownian motion of both rigid and deformable mesoscopic particles by cross-correlated dynamic light scattering with microsecond temporal resolution. Whereas rigid particles show the classical long-time tail prediction, the transition to diffusive motion of deformable particles presents a striking behavior not explained by the existing hydrodynamic treatments. This observation can be interpreted in terms of a damped oscillatory deformational motion on time scales of the order of the Brownian time. Finally, we show that the nondiffusive Brownian motion depends on the specific flexibility of the particles. © 2009 The American Physical Society.
Original languageEnglish
Article number021403
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume80
Issue number2
DOIs
Publication statusPublished - 18 Aug 2009

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