Source:http://linkedlifedata.com/resource/pubmed/id/17309285
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
7
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| pubmed:dateCreated |
2007-3-20
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| pubmed:abstractText |
We demonstrate that in random-stacking hard-sphere colloidal crystals the stacking disorder not only exists in the direction perpendicular to the close-packed layers, but also extends in the lateral direction. The existence of such in-plane stacking disorder is suggested by a recent observation of lateral broadening of the Bragg scattering rods in microradian X-ray diffraction and is further confirmed here by real-space confocal microscopy in two hard-sphere colloidal systems with different relative gravity effects. Due to the in-plane stacking disorder, the hexagonal planes consist of islands with different lateral A, B, and C positions with characteristic line defects in between them. The real-space layer-by-layer stacks of images also reveal the 3-D structure of the defects. The chance zeta to find another line-defect above a line-defect in the layer below turns out to be close to 1/2--independent of relative gravity--which can be explained by the two different stacking options above a defect. The stacking of a few sets of several line defects situated on top of each other turns out to be predominantly FCC-like.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:status |
PubMed-not-MEDLINE
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| pubmed:month |
Mar
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| pubmed:issn |
0743-7463
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:day |
27
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| pubmed:volume |
23
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
3554-60
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| pubmed:year |
2007
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| pubmed:articleTitle |
In-plane stacking disorder in polydisperse hard sphere crystals.
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| pubmed:affiliation |
Van't Hoff Laboratory for Physical and Colloid Chemistry, Department of Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands.
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| pubmed:publicationType |
Journal Article
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