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|a eng
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| 100 |
1 |
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|a van der Beek, David
|e verfasserin
|4 aut
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| 245 |
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|a Fast formation of opal-like columnar colloidal crystals
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|c 2007
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 15.01.2008
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|a Date Revised 30.10.2007
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a We demonstrate that highly polydisperse colloidal gibbsite platelets easily form an opal-like columnar crystal with striking iridescent Bragg reflections. The formation process can be accelerated by orders of magnitude under a centrifugation force of 900 g without arresting the system in a disordered glassy phase. Using transmission electron microscopy and small-angle X-ray scattering techniques, we find that the forced sedimentation is accompanied by particle size fractionation, leading to inversion of the iridescent colors. The relatively easy self-organization of the polydisperse colloidal particles into opal-like crystals may be explained on the basis of the observed particle fractionation and possibly also on hexatic-like ordering
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|a Journal Article
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|a Radstake, Paul B
|e verfasserin
|4 aut
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|a Petukhov, Andrei V
|e verfasserin
|4 aut
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|a Lekkerkerker, Henk N W
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 23(2007), 23 vom: 06. Nov., Seite 11343-6
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|x 1520-5827
|7 nnns
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| 773 |
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|g volume:23
|g year:2007
|g number:23
|g day:06
|g month:11
|g pages:11343-6
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