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Keywords = 2D piezoelectric QCs

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9 pages, 3519 KB  
Article
BN Diamane-like Quasicrystal Based on 30° Twisted H-BN Bilayers and Its Approximants: Features of the Atomic Structure and Electronic Properties
by Leonid A. Chernozatonskii and Aleksey I. Kochaev
Crystals 2023, 13(3), 421; https://doi.org/10.3390/cryst13030421 - 28 Feb 2023
Cited by 3 | Viewed by 2196
Abstract
The dodecagonal graphene quasicrystal (GQC) based on a 30° twisted bigraphene has been well investigated. Recently, the sp3-hybridizated carbon analog, the diamane quasicrystal as a H(F) functionalized GQC was proposed. Here we present a study of a similar sp3-hybridizated [...] Read more.
The dodecagonal graphene quasicrystal (GQC) based on a 30° twisted bigraphene has been well investigated. Recently, the sp3-hybridizated carbon analog, the diamane quasicrystal as a H(F) functionalized GQC was proposed. Here we present a study of a similar sp3-hybridizated boron nitride 3-fold symmetry piezoelectric quasicrystal (BNnQC) based on a 30° twisted hexagonal BN bilayer (BNQC). The analysis of the atomic and electronic structures of its approximants based on 29.4° and 27.8° twisted h-BN bilayers has been carried by using of the density functional theory (DFT). The calculated values of the energy gaps ∼5 eV classify this predicted boron nitride material as a new wide-gap 2D quasicrystal. Full article
(This article belongs to the Special Issue Aperiodic Crystals: Theory, Structure and Properties)
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12 pages, 2695 KB  
Article
Eshelby Tensors for Two-Dimensional Decagonal Piezoelectric Quasicrystal Composites
by Guangfang Li and Lianhe Li
Crystals 2022, 12(10), 1456; https://doi.org/10.3390/cryst12101456 - 14 Oct 2022
Cited by 3 | Viewed by 2155
Abstract
The Eshelby tensor for two-dimensional (2D) piezoelectric quasicrystal composites (QCs) is considered. The explicit expressions of Eshelby tensors for 2D piezoelectric QCs are given using the Green’s function method and the interior polarization tensor method, respectively. On this basis, numerical examples of the [...] Read more.
The Eshelby tensor for two-dimensional (2D) piezoelectric quasicrystal composites (QCs) is considered. The explicit expressions of Eshelby tensors for 2D piezoelectric QCs are given using the Green’s function method and the interior polarization tensor method, respectively. On this basis, numerical examples of the Eshelby tensor for 2D piezoelectric QCs with ellipsoidal inclusions are discussed in detail. Full article
(This article belongs to the Special Issue Feature Papers in Crystal Engineering in 2022)
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