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DC Field | Value | Language |
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dc.contributor.author | Couder, Yves | cat |
dc.contributor.author | Maurer, J. | cat |
dc.contributor.author | González Cinca, Ricard | cat |
dc.contributor.author | Hernández Machado, Aurora | cat |
dc.date.accessioned | 2011-07-07T12:51:48Z | - |
dc.date.available | 2011-07-07T12:51:48Z | - |
dc.date.issued | 2005 | - |
dc.identifier.issn | 1063-651X | - |
dc.identifier.uri | http://hdl.handle.net/2445/18745 | - |
dc.description.abstract | The dynamics of growth of dendrites’ side branches is investigated experimentally during the crystallization of solutions of ammonium bromide in a quasi-two-dimensional cell. Two regimes are observed. At small values of the Peclet number a self-affine fractal forms. In this regime it is known that the mean lateral front grows as t 0.5 . Here the length of each individual branch is shown to grow (before being screened off) with a power-law behavior t α n . The value of the exponent α n ( 0.5 ⩽ α n ⩽ 1 ) is determined from the start by the strength of the initial disturbance. Coarsening then takes place, when the branches of small α n are screened off by their neighbors. The corresponding decay of the growth of a weak branch is exponential and defined by its geometrical position relative to its dominant neighbors. These results show that the branch structure results from a deterministic growth of initially random disturbances. At large values of the Peclet number, the faster of the side branches escape and become independent dendrites. The global structure then covers a finite fraction of the two-dimensional space. The crossover between the two regimes and the spacing of these independent branches are characterized. | - |
dc.format.extent | 12 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | eng |
dc.publisher | The American Physical Society | eng |
dc.relation.isformatof | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.71.031602 | cat |
dc.relation.ispartof | Physical Review E, 2005, vol. E71, p. 031602-1-031602-12 | - |
dc.relation.uri | http://dx.doi.org/10.1103/PhysRevE.71.031602 | - |
dc.rights | (c) The American Physical Society, 2005 | - |
dc.rights.uri | http://dx.doi.org/10.1103/PhysRevE.71.031602 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Cristal·lografia | cat |
dc.subject.classification | Estructura cristal·lina (Sòlids) | cat |
dc.subject.classification | Solidificació | cat |
dc.subject.classification | Experiments | cat |
dc.subject.classification | Ciència dels materials | cat |
dc.subject.other | Crystallography | eng |
dc.subject.other | Layer structure (Solids) | eng |
dc.subject.other | Solidification | eng |
dc.subject.other | Materials science | eng |
dc.title | Side-branch growth in two-dimensional dendrits. Part I: Experiments | eng |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 561755 | ca |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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561755.pdf | 971.86 kB | Adobe PDF | View/Open |
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