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241010s2024 xx |||||o 00| ||eng c |
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|a 10.1107/S1600576724007957
|2 doi
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|a DE-627
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|e rakwb
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|a eng
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|a Diaz Maier, Joel
|e verfasserin
|4 aut
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|a Measurable structure factors of dense dispersions containing polydisperse optically inhomogeneous particles
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|c 2024
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|a Text
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 11.10.2024
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|a published: Electronic-eCollection
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|a Citation Status PubMed-not-MEDLINE
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|a © Joel Diaz Maier et al. 2024.
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|a Here, it is investigated how optical properties of single scatterers in interacting multi-particle systems influence measurable structure factors. Both particles with linear gradients of their scattering length density and core-shell structures evoke characteristic deviations between the weighted sum 〈S(Q)〉 of partial structure factors in a multi-component system and experimentally accessible measurable structure factors S M(Q). While 〈S(Q)〉 contains only the structural information of self-organizing systems, S M(Q) is additionally influenced by the optical properties of their constituents, resulting in features such as changing amplitudes, additional peaks in the low-wavevector region or splitting of higher-order maxima, which are not related to structural reasons. It is shown that these effects can be systematically categorized according to the qualitative behaviour of the form factor in the Guinier region, which enables assessing the suitability of experimentally obtained structure factors to genuinely represent the microstructure of complex systems free from any particular model assumption. Hence, a careful data analysis regarding size distribution and optical properties of single scatterers is mandatory to avoid a misinterpretation of measurable structure factors
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|a Journal Article
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|a contrast variation
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|a dense dispersions
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|a hard-sphere interaction
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|a optical inhomogeneities
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|a polydisperse particles
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|a size distributions
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|a small-angle scattering
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|a structure factors
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|a Gaus, Katharina
|e verfasserin
|4 aut
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| 700 |
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|a Wagner, Joachim
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of applied crystallography
|d 1998
|g 57(2024), Pt 5 vom: 01. Okt., Seite 1503-1513
|w (DE-627)NLM098121561
|x 0021-8898
|7 nnas
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| 773 |
1 |
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|g volume:57
|g year:2024
|g number:Pt 5
|g day:01
|g month:10
|g pages:1503-1513
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|u http://dx.doi.org/10.1107/S1600576724007957
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