Deep Elastic Strain Engineering of 2D Materials and Their Twisted Bilayers

Han, Ying1; Gao, Libo2,3; Zhou, Jingzhuo1; Hou, Yuan1; Jia, Yanwen1,4; Cao, Ke2,3; Duan, Ke1; Lu, Yang1,3,5

2022-02-01

10.1021/acsami.1c23431

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

Conventionally, tuning materials' properties can be done through strategies such as alloying, doping, defect engineering, and phase engineering, while in fact mechanical straining can be another effective approach. In particular, elastic strain engineering (ESE), unlike conventional strain engineering mainly based on epitaxial growth, allows for continuous and reversible modulation of material properties by mechanical loading/unloading. The exceptional intrinsic mechanical properties (including elasticity and strength) of twodimensional (2D) materials make them naturally attractive candidates for potential ESE applications. Here, we demonstrated that using the strain effect to modulate the physical and chemical properties toward novel functional device applications, which could be a general strategy for various 2D materials and their heterostructures. We then show how ultralarge, uniform elastic strain in free-standing 2D monolayers can permit deep elastic strain engineering (DESE), which can result in fundamentally changed electronic and optoelectronic properties for unconventional device applications. In addition to monolayers and van der Waals (vdW) heterostructures, we propose that DESE can be also applied to twisted bilayer graphene and other emerging twisted vdW structures, allowing for unprecedented functional 2D material applications.

2D materials nanomechanics elastic strain engineering twistronics nanotechnology

SCI ; EI

英语

其他

Hong Kong Research Grant Council (RGC)[RFS2021-1S05] ; National Natural Science Foundation of China (NSFC)[11825203,61904141,11922215] ; City University of Hong Kong[SRG 7005234] ; Natural Science Foundation of Shaanxi Province["2020JQ-295","2021JQ-181"] ; Shenzhen Science and Technology Innovation Committee[SGDX2020110309300301] ; Hong Kong Scholars Program[XJ2020043]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000758036500001

AMER CHEMICAL SOC

20220811699896

Defect engineering ; Monolayers ; Nanomechanics ; Strain

Metallurgy and Metallography:531 ; Nanotechnology:761 ; Physical Chemistry:801.4 ; Atomic and Molecular Physics:931.3 ; Solid State Physics:933 ; Crystalline Solids:933.1 ; Materials Science:951

Web of Science

1.City Univ Hong Kong, Dept Mech Engn, Kowloon, Hong Kong 999077, Peoples R China
2.Xidian Univ, Sch Mechano Elect Engn, Xian 710071, Peoples R China
3.City Univ Hong Kong, Shenzhen Res Inst, CityU Xidian Joint Lab Micro Nanomfg, Shenzhen 518057, Peoples R China
4.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
5.City Univ Hong Kong, Dept Mat Sci & Engn, Hong Kong 999077, Peoples R China

Han, Ying,Gao, Libo,Zhou, Jingzhuo,et al. Deep Elastic Strain Engineering of 2D Materials and Their Twisted Bilayers[J]. ACS Applied Materials & Interfaces,2022,14(7):8655-8663.

Han, Ying.,Gao, Libo.,Zhou, Jingzhuo.,Hou, Yuan.,Jia, Yanwen.,...&Lu, Yang.(2022).Deep Elastic Strain Engineering of 2D Materials and Their Twisted Bilayers.ACS Applied Materials & Interfaces,14(7),8655-8663.

Han, Ying,et al."Deep Elastic Strain Engineering of 2D Materials and Their Twisted Bilayers".ACS Applied Materials & Interfaces 14.7(2022):8655-8663.