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oai:recercat.cat:2445/128462025-12-05T16:44:53Zcom_2072_1057col_2072_478823col_2072_478917

Self-sustained spatiotemporal oscillations induced by membrane-bulk coupling Gómez Marín, Alejandro García Ojalvo, Jordi Sancho, José M. Química física Dinàmica de fluids Chemistry, Physical and theoretical Fluid dynamics We propose a novel mechanism leading to spatiotemporal oscillations in extended systems that does not rely on local bulk instabilities. Instead, oscillations arise from the interaction of two subsystems of different spatial dimensionality. Specifically, we show that coupling a passive diffusive bulk of dimension d with an excitable membrane of dimension d-1 produces a self-sustained oscillatory behavior. An analytical explanation of the phenomenon is provided for d=1. Moreover, in-phase and antiphase synchronization of oscillations are found numerically in one and two dimensions. This novel dynamic instability could be used by biological systems such as cells, where the dynamics on the cellular membrane is necessarily different from that of the cytoplasmic bulk. 2010-06-11T10:52:29Z 2010-06-11T10:52:29Z 2007 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 0031-9007 https://hdl.handle.net/2445/12846 550802 eng Reproducció digital del document proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevLett.98.168303 Physical Review Letters, 2007, vol. 98, núm. 16, p. 168303-1-168303-4 http://dx.doi.org/10.1103/PhysRevLett.98.168303 (c) American Physical Society, 2007 info:eu-repo/semantics/openAccess 4 p. application/pdf American Physical Society Articles publicats en revistes (Física Quàntica i Astrofísica)