Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/18927
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dc.contributor.authorPons, A.J.cat
dc.contributor.authorKarma, A.cat
dc.contributor.authorAkamatsu, S.cat
dc.contributor.authorNewey M.cat
dc.contributor.authorPomerance, A.cat
dc.contributor.authorSinger, H.cat
dc.contributor.authorLosert, W.cat
dc.date.accessioned2011-07-07T12:55:32Z-
dc.date.available2011-07-07T12:55:32Z-
dc.date.issued2007-
dc.identifier.issn1063-651X-
dc.identifier.urihttp://hdl.handle.net/2445/18927-
dc.description.abstractWe present a feedback control scheme to stabilize unstable cellular patterns during the directional solidification of a binary alloy. The scheme is based on local heating of cell tips which protrude ahead of the mean position of all tips in the array. The feasibility of this scheme is demonstrated using phase-field simulations and, experimentally, using a real-time image processing algorithm, to track cell tips, coupled with a movable laser spot array device to heat the tips locally. We demonstrate, both numerically and experimentally, that spacings well below the threshold for a period-doubling instability can be stabilized. As predicted by the numerical calculations, cellular arrays become stable with uniform spacing through the feedback control which is maintained with minimal heating.eng
dc.format.extent5 p.-
dc.format.mimetypeapplication/pdf-
dc.language.isoengeng
dc.publisherThe American Physical Societyeng
dc.relation.isformatofReproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.75.021602cat
dc.relation.ispartofPhysical Review E, 2007, vol. 75, núm. 2, p. 021602-1-021602-5-
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevE.75.021602-
dc.rights(c) American Physical Society, 2007-
dc.subject.classificationCiència dels materialscat
dc.subject.classificationEquacions d'estatcat
dc.subject.classificationRegla de les fases i equilibricat
dc.subject.classificationCiència dels materialscat
dc.subject.otherMaterials scienceeng
dc.subject.otherEquations of stateeng
dc.subject.otherPhase rule and equilibriumeng
dc.titleFeedback control of unstable cellular solidification frontseng
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.identifier.idgrec541510-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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