Source:http://linkedlifedata.com/resource/pubmed/id/12513495
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
5 Pt 1
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| pubmed:dateCreated |
2003-1-6
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| pubmed:abstractText |
We report experimental results on quasi-two-dimensional diffusion limited growth in directionally solidified succinonitrile with small amounts of poly(ethylene oxide), acetone, or camphor as a solute. Seaweed growth, or dense branching morphology, is selected by growing grains close to the [111] plane, where the in-plane surface tension is nearly isotropic. The observed growth morphologies are very sensitive to small anisotropies in surface tension caused by misorientations from the [111] plane. Different seaweed morphologies are found, including the degenerate, the stabilized, and the strongly tilted seaweeds. The degenerate seaweeds show a limited fractal scaling range and, with increased undercooling, suggests a transition from "fractal" to "compact" seaweed. Strongly tilted seaweeds demonstrate a significant twofold anisotropy. In addition, seaweed-dendrite transitions are observed in low anisotropy growth.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Nov
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| pubmed:issn |
1539-3755
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:volume |
66
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
051604
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| pubmed:dateRevised |
2003-11-4
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| pubmed:year |
2002
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| pubmed:articleTitle |
Dynamics of low anisotropy morphologies in directional solidification.
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| pubmed:affiliation |
Laboratory of Atomic and Solid State Physics, Cornell University, Ithaca, New York 14853, USA. utter@phy.duke.edu
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| pubmed:publicationType |
Journal Article
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