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Influence of pores arrangement on stability of photonic structures during sintering
Citation Link: https://doi.org/10.15480/882.2873
Publikationstyp
Journal Article
Date Issued
2020-05-11
Sprache
English
TORE-DOI
TORE-URI
Volume
40
Start Page
4562
End Page
4571
Citation
Journal of the European Ceramic Society 13 (40): 4562-4571 (2020-10-01)
Publisher DOI
Scopus ID
Publisher
Elsevier
Discrete Element Method (DEM) has been used for numerical investigation of sintering-induced structural deformations occurring in inverse opal photonic structures. The influence of the initial arrangement of template particles on the stability of highly porous inverse opal α-Al2O3 structures has been analyzed. The material transport, densification, as well as formation of defects and cracks have been compared for various case studies. Three different stages of defects formation have been distinguished starting with local defects ending with intrapore cracks. The results show that the packing of the template particles defined during the template self-assembly process play a crucial role in the later structural deformation upon thermal exposure. The simulation results are in very good agreement with experimental data obtained from SEM images and previous studies by ptychographic X-ray tomography.
Subjects
Discrete element method (DEM)
Inverse opals
Ordered macroporous structures
Sintering
DDC Class
620: Ingenieurwissenschaften
More Funding Information
Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Project number 192346071 – SFB 986 (projects A3 and C5).
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