Dendritic sidebranching with periodic localized perturbations: Directional solidification of pivalic acid–coumarin 152 mixtures

Williams, LM; Muschol, Martin; Qian, Xiaohu; Losert, Wolfgang; Cummins, H. Z.

doi:10.1103/physreve.48.489

Cited by 43 publications

(23 citation statements)

References 23 publications

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“…influence the crystallization morphology and the ultimate properties of the resulting materials. [79,80,[114][115][116] For example, PF simulations for dendritic solidification under oscillating pressure or temperature predict that the frequency of side branching of the dendrite can be tuned by the frequency of the external forcing, [115,116] a phenomenon confirmed by experiments on liquid crystals. [115,116] Periodic laser pulses were also used to control solidification morphology and grain boundary dynamics in polycrystalline matter.…”

Section: Crystallization In Confined Domainsmentioning

confidence: 95%

Phase-Field Modeling of Polycrystalline Solidification: From Needle Crystals to Spherulites—A Review

Gránásy

Rátkai

Szàllàs

et al. 2013

Metall Mater Trans A

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LÁ SZLÓ GRÁ NÁ SY, LÁ SZLÓ RÁ TKAI, ATTILA SZÁ LLÁ S, BÁ LINT KORBULY, GYULA I. TÓ TH, LÁ SZLÓ KÖ RNYEI, and TAMÁ S PUSZTAI Advances in the orientation-field-based phase-field (PF) models made in the past are reviewed. The models applied incorporate homogeneous and heterogeneous nucleation of growth centers and several mechanisms to form new grains at the perimeter of growing crystals, a phenomenon termed growth front nucleation. Examples for PF modeling of such complex polycrystalline structures are shown as impinging symmetric dendrites, polycrystalline growth forms (ranging from disordered dendrites to spherulitic patterns), and various eutectic structures, including spiraling two-phase dendrites. Simulations exploring possible control of solidification patterns in thin films via external fields, confined geometry, particle additives, scratching/piercing the films, etc. are also displayed. Advantages, problems, and possible solutions associated with quantitative PF simulations are discussed briefly.

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Section: Crystallization In Confined Domainsmentioning

confidence: 95%

Phase-Field Modeling of Polycrystalline Solidification: From Needle Crystals to Spherulites—A Review

Gránásy

Rátkai

Szàllàs

et al. 2013

Metall Mater Trans A

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show abstract

“…Evidently, the shape of the dendrite envelope remains nearly invariant apart from an early transient regime (Ferreiro et al 2002a, b). This highly regular structure is reminiscent of symmetric dendritic crystallization driven by periodic external perturbations (Williams et al 1993;Börzsönyi et al 1999Börzsönyi et al , 2000.…”

Section: Ideal Dendritic Crystallization In Polymer Films: Mullins-sementioning

confidence: 98%

Insights into Polymer Crystallization from Phase-Field Theory

Gránásy

Pusztai

Douglas

2013

Encyclopedia of Polymers and Composites

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“…Other experiments with more rapid transients have seen large sets of sidebranches generated [23,24,25,26]. We also saw no evidence of any transition to doublons, as has been observed in xenon dendrites [27,28].…”

Section: Response To Transientsmentioning

confidence: 49%

The transient growth of ammonium chloride dendrites

Dougherty

Nunnally

2007

Journal of Crystal Growth

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We report measurements of the initial growth and subsequent transient response of dendritic crystals of ammonium chloride grown from supersaturated aqueous solution. Starting from a small, nearly spherical seed held in unstable equilibrium, we lower the temperature to initiate growth. The growth speed and tip radius approach the same steady state values independent of initial seed size. We then explore the response of the growing dendrite to changes in temperature. The crystal adjusts quickly and smoothly to the new growth conditions, maintaining an approximately constant value of vρ 2 throughout. Dissolving dendrites, on the other hand, are not characterized by the same value of vρ 2 .

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Dendritic sidebranching with periodic localized perturbations: Directional solidification of pivalic acid–coumarin 152 mixtures

Cited by 43 publications

References 23 publications

Phase-Field Modeling of Polycrystalline Solidification: From Needle Crystals to Spherulites—A Review

Phase-Field Modeling of Polycrystalline Solidification: From Needle Crystals to Spherulites—A Review

Insights into Polymer Crystallization from Phase-Field Theory

The transient growth of ammonium chloride dendrites

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