Runaway electrification of friable self-replicating granular matter
| Autor: | Cartwright, J.H.E., Escribano, B., Grothe, H., Piro, O., Sainz-Díaz, C.I., Tuval, I. |
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| Přispěvatelé: | Ministerio de Ciencia e Innovación (España), Austrian Science Fund |
| Rok vydání: | 2013 |
| Předmět: |
Secondary nuclei
Fission process FOS: Physical sciences Laboratory experiments Environmental scanning electron microscopes Condensed Matter - Soft Condensed Matter Granular matter Dynamical model Nonlinear Sciences - Adaptation and Self-Organizing Systems Geophysics (physics.geo-ph) Physics - Geophysics Secondary nucleation Soft Condensed Matter (cond-mat.soft) Solar nebula Astrophysics::Earth and Planetary Astrophysics Adaptation and Self-Organizing Systems (nlin.AO) |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname BIRD: BCAM's Institutional Repository Data |
| ISSN: | 0743-7463 2010-2232 |
| Popis: | We establish that the nonlinear dynamics of collisions between particles favors the charging of an insulating, friable, self-replicating granular material that undergoes nucleation, growth, and fission processes; we demonstrate with a minimal dynamical model that secondary nucleation produces a positive feedback in an electrification mechanism that leads to runaway charging. We discuss ice as an example of such a self-replicating granular material: We confirm with laboratory experiments in which we grow ice from the vapor phase in situ within an environmental scanning electron microscope that charging causes fast-growing and easily breakable palmlike structures to form, which when broken off may form secondary nuclei. We propose that thunderstorms, both terrestrial and on other planets, and lightning in the solar nebula are instances of such runaway charging arising from this nonlinear dynamics in self-replicating granular matter. © 2013 American Chemical Society. We acknowledge the financial support of the Spanish MICINN Grant FIS2010-22322-C01 (O.P. and I.T.), “subprograma Ramón y Cajal” (I.T.), and grant FIS2010-22322-C02 (J.H.E.C. and C.I.S.D.); and the Austrian Science Fund (FWF), Grant P23027 (H.G.) |
| Databáze: | OpenAIRE |
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