Samenvatting
The quasiperiodic structures in metal alloys have been known to depend on the existence of icosahedral order in the melt. Among different phases observed in intermetallics, decagonal quasicrystal (DQC) structures have been identified in many glass-forming alloys yet remain inaccessible in bulk-state condensed soft matters. Via annealing the mixture of two giant molecules, the binary system assemblies into an axial DQC superlattice, which is identified comprehensively with meso-atomic accuracy. Analysis indicates that the DQC superlattice is composed of mesoatoms with an unusually broad volume distribution. The interplays of submesoatomic (molecular) and mesoatomic (supramolecular) local packings are found to play a crucial role in not only the formation of the metastable DQC superlattice but also its transition to dodecagonal quasicrystal and Frank-Kasper σ superlattices.
Originele taal-2 | Engels |
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Artikelnummer | e2115304119 |
Aantal pagina's | 6 |
Tijdschrift | Proceedings of the National Academy of Sciences of the United States of America (PNAS) |
Volume | 119 |
Nummer van het tijdschrift | 3 |
DOI's | |
Status | Gepubliceerd - 18 jan. 2022 |
Bibliografische nota
Publisher Copyright:© This article is distributed under Creative Commons Attribution-NonCommercialNoDerivatives License 4.0 (CC BY-NC-ND).
Financiering
PNAS j 5 of 6 https://doi.org/10.1073/pnas.2115304119 We thank the staff of Beamline BL16B1 at the SSRF for assistance with the SAXS experiments. This work is supported by NSF (DMR-1408872 to S.Z.D.C.), the National Natural Science Foundation of China (U1832220 to S.Z.D.C.), the Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices (no. 2019B121203003), the Recruitment Program of Guangdong (no. 2016ZT06C322), Major Program of National Natural Science Foundation of China (no. 51890871), and the Fundamental Research Funds for the Central Universities (no. 2019JQ05 to M.H.). ACKNOWLEDGMENTS. We thank the staff of Beamline BL16B1 at the SSRF for assistance with the SAXS experiments. This work is supported by NSF (DMR-1408872 to S.Z.D.C.), the National Natural Science Foundation of China (U1832220 to S.Z.D.C.), the Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices (no. 2019B121203003), the Recruitment Program of Guangdong (no. 2016ZT06C322), Major Program of National Natural Science Foundation of China (no. 51890871), and the Fundamental Research Funds for the Central Universities (no. 2019JQ05 to M.H.).