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Considerations on the model-free shape retrieval of inorganic nanocrystals from small-angle scattering data.

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Title: Considerations on the model-free shape retrieval of inorganic nanocrystals from small-angle scattering data.
Authors: Burian, Max, Fritz-Popovski, Gerhard, He, Meng, Kovalenko, Maksym V., Paris, Oskar, Lechner, Rainer T.
Source: Journal of Applied Crystallography. Jun2015, Vol. 48 Issue 3, p857-868. 12p.
Subjects: Nanocrystals, Atoms, Small-angle X-ray scattering, X-ray scattering, Bismuth
Abstract: Some new considerations on the model-free shape retrieval of inorganic nanocrystals based on the evaluation of averaged dummy atom models obtained from small-angle X-ray scattering data are presented. Scattering curves for shapes commonly found in inorganic nanocrystal systems were computed, from which dummy atom models were reconstructed using DAMMIN and DAMAVER. Cross sectional analysis methods were applied to allow a quantitative interpretation of these models, where special focus was directed towards the measurement of discrete model dimensions. By a quantitative comparison of the obtained models with the initial geometries, the limits of the proposed evaluation techniques were tested. Further, the proposed methods were utilized to study the influence of the accessible scattering vector as well as the effect of increasing size distributions on models retrieved by DAMMIN and DAMAVER. The results confirm the usefulness of these ab initio shape-retrieval methods for slightly polydisperse systems. Finally, the practicability of the proposed techniques is demonstrated on an ensemble of chemically synthesized colloidal bismuth nanocrystals. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Applied Crystallography is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 102989900
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  Data: Considerations on the model-free shape retrieval of inorganic nanocrystals from small-angle scattering data.
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  Data: <searchLink fieldCode="AR" term="%22Burian%2C+Max%22">Burian, Max</searchLink><br /><searchLink fieldCode="AR" term="%22Fritz-Popovski%2C+Gerhard%22">Fritz-Popovski, Gerhard</searchLink><br /><searchLink fieldCode="AR" term="%22He%2C+Meng%22">He, Meng</searchLink><br /><searchLink fieldCode="AR" term="%22Kovalenko%2C+Maksym+V%2E%22">Kovalenko, Maksym V.</searchLink><br /><searchLink fieldCode="AR" term="%22Paris%2C+Oskar%22">Paris, Oskar</searchLink><br /><searchLink fieldCode="AR" term="%22Lechner%2C+Rainer+T%2E%22">Lechner, Rainer T.</searchLink>
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  Data: <searchLink fieldCode="DE" term="%22Nanocrystals%22">Nanocrystals</searchLink><br /><searchLink fieldCode="DE" term="%22Atoms%22">Atoms</searchLink><br /><searchLink fieldCode="DE" term="%22Small-angle+X-ray+scattering%22">Small-angle X-ray scattering</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+scattering%22">X-ray scattering</searchLink><br /><searchLink fieldCode="DE" term="%22Bismuth%22">Bismuth</searchLink>
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  Label: Abstract
  Group: Ab
  Data: Some new considerations on the model-free shape retrieval of inorganic nanocrystals based on the evaluation of averaged dummy atom models obtained from small-angle X-ray scattering data are presented. Scattering curves for shapes commonly found in inorganic nanocrystal systems were computed, from which dummy atom models were reconstructed using DAMMIN and DAMAVER. Cross sectional analysis methods were applied to allow a quantitative interpretation of these models, where special focus was directed towards the measurement of discrete model dimensions. By a quantitative comparison of the obtained models with the initial geometries, the limits of the proposed evaluation techniques were tested. Further, the proposed methods were utilized to study the influence of the accessible scattering vector as well as the effect of increasing size distributions on models retrieved by DAMMIN and DAMAVER. The results confirm the usefulness of these ab initio shape-retrieval methods for slightly polydisperse systems. Finally, the practicability of the proposed techniques is demonstrated on an ensemble of chemically synthesized colloidal bismuth nanocrystals. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Journal of Applied Crystallography is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1107/S1600576715006846
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        Text: English
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        PageCount: 12
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        Type: general
      – SubjectFull: Atoms
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      – SubjectFull: Small-angle X-ray scattering
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              Text: Jun2015
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