|Publisher DOI:||10.1021/acs.nanolett.0c05041||Title:||Deformation behavior of cross-linked supercrystalline nanocomposites: an in situ SAXS/WAXS study during uniaxial compression||Language:||English||Authors:||Giuntini, Diletta
Domènech Garcia, Berta
Schneider, Gerold A.
|Keywords:||Cross-Linking;Mechanical Behavior;Nanocomposites;Nanocrystal Superlattice;Supercrystals;X-ray Scattering||Issue Date:||22-Mar-2021||Publisher:||ACS Publ.||Source:||Nano letters 21 (7): 2891-2897 (2021-04-14)||Journal or Series Name:||Nano letters||Abstract (english):||
With the ever-expanding functional applications of supercrystalline nanocomposites (a relatively new category of materials consisting of organically functionalized nanoparticles arranged into periodic structures), it becomes necessary to ensure their structural stability and understand their deformation and failure mechanisms. Inducing the cross-linking of the functionalizing organic ligands, for instance, leads to a remarkable enhancement of the nanocomposites' mechanical properties. It is however still unknown how the cross-linked organic phase redistributes applied loads, how the supercrystalline lattice accommodates the imposed deformations, and thus in general what phenomena govern the overall material's mechanical response. This work elucidates these aspects for cross-linked supercrystalline nanocomposites through an in situ small- and wide-angle X-ray scattering study combined with uniaxial pressing. Because of this loading condition, it emerges that the cross-linked ligands effectively carry and distribute loads homogeneously throughout the nanocomposites, while the superlattice deforms via rotation, slip, and local defects generation.
|URI:||http://hdl.handle.net/11420/9400||DOI:||10.15480/882.3499||ISSN:||1530-6984||Institute:||Keramische Hochleistungswerkstoffe M-9||Document Type:||Article||Funded by:||Deutsche Forschungsgemeinschaft (DFG)
Alexander von Humboldt-Stiftung
|More Funding information:||D.G. gratefully acknowledges the support from the Alexander von Humboldt Foundation. B.B. gratefully acknowledges the support from the Ministry of National Education of the Republic of Turkey.||Peer Reviewed:||Yes||Project:||SFB 986: Maßgeschneiderte Multiskalige Materialsysteme - M3||License:||CC BY-NC-ND 4.0 (Attribution-NonCommercial-NoDerivatives)|
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