Structural Evolution of Colloidal Crystal Films in the Process of Melting Revealed by Bragg Peak Analysis

In situ X-ray diffraction studies of structural evolution of colloidal crystal films formed by polystyrene spherical particles upon incremental heating are reported. The Bragg peak parameters, such as peak position, integrated intensity, and radial and azimuthal widths were analyzed as a function of temperature. A quantitative study of colloidal crystal lattice distortions and mosaic spread as a function of temperature was carried out using Williamson-Hall plots based on mosaic block model. The temperature dependence of the diameter of polystyrene particles was obtained from the analysis of Bragg peaks, and the form factor contribution extracted from the diffraction patterns. Four stages of structural evolution in a colloidal crystal upon heating were identified. Based on this analysis, a model of the heating and melting process in the colloidal crystal film is suggested.

Metadaten
Author details:	Elena A. Sulyanova, Anatoly Shabalin, Alexey V. Zozulya, Janne-Mieke Meijer, Dmitry Dzhigaev, Oleg Gorobtsov, Ruslan P. Kurta, Sergey Lazarev, Ulf Lorenz, Andrej Singer, Oleksandr Yefanov, Ivan Zaluzhnyy, Ilya Besedin, Michael Sprung, Andrei V. Petukhov, Ivan A. Vartanyants
DOI:	https://doi.org/10.1021/la504652z
ISSN:	0743-7463
Pubmed ID:	https://pubmed.ncbi.nlm.nih.gov/25594683
Title of parent work (English):	Langmuir
Publisher:	American Chemical Society
Place of publishing:	Washington
Publication type:	Article
Language:	English
Year of first publication:	2015
Publication year:	2015
Release date:	2017/03/27
Volume:	31
Issue:	19
Number of pages:	10
First page:	5274
Last Page:	5283
Funding institution:	BMBF [05K10CHG]; Virtual Institute of the Helmholtz Association [VH-VI-403]; Russian Foundation for Basic Research [14-22-00098]
Organizational units:	Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie
Peer review:	Referiert