About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Ultrafine-grained and Heterostructured Materials (UFGH XII)
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Presentation Title |
3D Heterostructures via Mechanochemical Reshuffling of Layered and Non-layered Metal Chalcogenides |
Author(s) |
Viktor P. Balema |
On-Site Speaker (Planned) |
Viktor P. Balema |
Abstract Scope |
3D-heterostructures with incommensurate arrangements of well-defined building blocks are created using an unconventional synthetic approach comprising of mechanically facilitated “reshuffling” of layered transition-metal dichalcogenides [1,2], and non-layered rare-earth metal monochalcogenides [2]. The discovered solid-state transformations are directed by quantum interaction between chemically and structurally dissimilar solids toward atomic-scale ordering. In the case of MoS2 and HfS2 [1], the heterostructuring is energetically favorable over the formation of homogeneous nigh-entropy dichalcogenides [3]. Density-functional theory calculations validate experimental results. The obtained 3D-heterostructures show broad range of electron transport behaviors varying from metallic conductivity to indirect band gap semiconductivity. Finally, the presentations reviews current state of the art in the field of Mechanochemistry and highlights possible mechanisms of mechanochemical transformations.
References:
[1] I. Z. Hlova et al. Nanoscale Adv. (2021), Ahead of Print.
[2] O. Dolotko et al. Nat. Commun. (2020), 11(1), 3005
[3] I. Z. Hlova et al. Chem. Commun. (2018), 54(89), 12574 |
Proceedings Inclusion? |
Planned: |
Keywords |
Nanotechnology, Process Technology, Electronic Materials |