Article (Scientific journals)
Van der Waals direction transformation induced by shear strain in layered PdSe2
Lv, Peng; Tang, Gang; Liu, Yanyu et al.
2021In Extreme Mechanics Letters, 44, p. 101231
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Keywords :
2D materials; Ferroelastic; First-principles method; Shear strain; Effective approaches; Ferroelastic switching; First-principles calculation; Layered material; Potential device applications; Shape-memory materials; Transformation-Induced; Uni-axial strains; Bioengineering; Chemical Engineering (miscellaneous); Engineering (miscellaneous); Mechanics of Materials; Mechanical Engineering
Abstract :
[en] Uniaxial and biaxial strain approaches are usually implemented to switch the ferroelastic states, which play a key role in the application of the ferroics and shape memory materials. In this work, by using the first-principles calculations, we found not only uniaxial strain, but also shear strain can induce a novel ferroelastic switching, in which the van der Waals (vdW) layered direction rotates with the ferroelastic transition in layered bulk PdSe2. This is an interesting phenomenon that has never been discovered. The novel three-state ferroelastic switching in layered PdSe2 also occurs under shear strain. Our result shows that the shear strain could be used as an effective approach for manipulating the functionalities of layered materials in potential device applications.
Disciplines :
Physics
Mechanical engineering
Aerospace & aeronautics engineering
Author, co-author :
Lv, Peng;  School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China
Tang, Gang ;  Université de Liège - ULiège > Département de physique > Physique théorique des matériaux
Liu, Yanyu;  School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China
Lun, Yingzhuo;  School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China
Wang, Xueyun ;  School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China
Hong, Jiawang ;  School of Aerospace Engineering, Beijing Institute of Technology, Beijing, China
Language :
English
Title :
Van der Waals direction transformation induced by shear strain in layered PdSe2
Publication date :
April 2021
Journal title :
Extreme Mechanics Letters
ISSN :
2352-4316
Publisher :
Elsevier Ltd
Volume :
44
Pages :
101231
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This work is supported by the National Science Foundation of China (Grant No. 11572040 ), Beijing Natural Science Foundation, China (Grant No. Z190011 ), National Key Research and Development Program of China ( 2019YFA0307900 ) and Beijing Institute of Technology Research Fund Program for Young Scholars, China . Theoretical calculations were performed using resources of the National Supercomputer Centre in Guangzhou, which is supported by Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (the second phase), China under Grant No. U1501501 .
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