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|e rakwb
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|a eng
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| 100 |
1 |
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|a Mock, Eric B
|e verfasserin
|4 aut
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| 245 |
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|a Determination of static microstructure of dilute and concentrated suspensions of anisotropic particles by ultra-small-angle X-ray scattering
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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 17.09.2007
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|a Date Revised 08.08.2007
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Ultra-small-angle X-ray scattering was performed on suspensions of anisotropic polystyrene particles of varying degrees of anisotropy. The wave vector dependence of particle form factors is well described by a model developed by Debye for the scattering from fused spheres. As volume fraction is raised, all suspensions undergo a disorder/order phase transition. The scattering from disordered and ordered suspensions of anisotropic particles is the same as that of spheres up to volume fractions of 0.45, suggesting that, in the dilute crystalline phase, the anisotropic particles order into a rotator or plastic crystal phase, where the particle centers of mass are ordered, but the particle directors are randomly distributed. Further increase in particle volume fraction leads to differences in scattering between homonuclear dicolloids and spheres, implying that the homonuclear dicolloids form a body-centered tetragonal phase with both positional and directional order. This conclusion is supported by real-space imaging of dried films of the particles
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|a Journal Article
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|a Zukoski, Charles F
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 23(2007), 17 vom: 14. Aug., Seite 8760-71
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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:17
|g day:14
|g month:08
|g pages:8760-71
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|d 23
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|h 8760-71
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