Growth of lipid vesicle structures: From surface fractals to mass fractals

Sándalo Roldán-Vargas, Ramon Barnadas-Rodríguez, Alberto Martín-Molina, Manuel Quesada-Pérez, Joan Estelrich, José Callejas-Fernández

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Abstract

We study fractal vesicle aggregates whose morphology is conditioned by the interaction between the lipid vesicle membranes and calcium and magnesium ions. These morphologies are probed by means of static light scattering using a cross-correlation scheme that avoids the multiple intracluster scattering. In contrast to the branched structures induced by calcium, we report a singular surface- to mass-fractal transition controlled by the magnesium concentration. From infrared spectroscopy data we conclude that the specific dehydration of the lipid membranes due to these cations plays an essential role in short-range intervesicle interactions. © 2008 The American Physical Society.
Original languageEnglish
Article number010902
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume78
DOIs
Publication statusPublished - 23 Jul 2008

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    Roldán-Vargas, S., Barnadas-Rodríguez, R., Martín-Molina, A., Quesada-Pérez, M., Estelrich, J., & Callejas-Fernández, J. (2008). Growth of lipid vesicle structures: From surface fractals to mass fractals. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 78, [010902]. https://doi.org/10.1103/PhysRevE.78.010902