Out-of-Plane Deformations Determined Mechanics of Vanadium Disulfide (VS2) Sheets

doi:10.1021/acsami.0c19835

	Out-of-Plane Deformations Determined Mechanics of Vanadium Disulfide (VS2) Sheets
	Wang, Guorui 1,2; Zhang, Zhepeng 3; Wang, Yanlei 4; Gao, Enlai 5; Jia, Xiangzheng 5; Dai, Zhaohe 1; Weng, Chuanxin 1; Liu, Luqi 1; Zhang, Yanfeng 3; Zhang, Zhong 1
刊名	ACS APPLIED MATERIALS & INTERFACES
	2021-01-20
卷号	13 期号:2 页码:3040-3050
关键词	two-dimensional (2D) materials vanadium disulfide nanosheet out-of-plane deformation nanomechanics strain engineering
ISSN号	1944-8244
DOI	10.1021/acsami.0c19835
英文摘要	The rapid development of two-dimensional (2D) materials has significantly broadened the scope of 2D science in both fundamental scientific interests and emerging technological applications, wherein the mechanical properties play an indispensably key role. Nevertheless, particularly challenging is the ultrathin nature of 2D materials that makes their manipulations and characterizations considerably difficult. Herein, thanks to the excellent flexibility of vanadium disulfide (VS2) sheets, their susceptibility to out-of-plane deformation is exploited to realize the controllable loading and enable the accurate measurements of mechanical properties. In particular, the Young's modulus is estimated to be 44.4 +/- 3.5 GPa, approaching the lower limit for 2D transition metal dichalcogenides (TMDs). We further report the first measurement of thickness-dependent bending rigidity of VS2, which deviates from the prediction of the classical continuum mechanics theory. Additionally, a deeper understanding of the mechanics within two dimensions also facilitates the modulation of strain-coupled physics at the nanoscale. Our Raman measurements showed the Gruneisen parameters for VS2 were determined for the first time to be gamma(E2g1) approximate to 0.83 and gamma(A1g) approximate to 0.32.
资助项目	National Natural Science Foundation of China[11832010] ; National Natural Science Foundation of China[11890682] ; National Natural Science Foundation of China[22072031] ; National Natural Science Foundation of China[21721002] ; Strategic Priority Research Program of Chinese Academy of Sciences (CAS)[XDB30020100] ; National Key Research and Development Program[2018YFA0208403] ; National Key Basic Research Program of China[2013CB934203]
WOS关键词	TOTAL-ENERGY CALCULATIONS ; ELASTIC PROPERTIES ; THIN-FILMS ; GRAPHENE ; MONOLAYER ; MOS2 ; NANOSHEETS ; ADHESION ; NANOMATERIALS ; INTRAPLANAR
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000612551400085
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences (CAS) ; National Key Research and Development Program ; National Key Basic Research Program of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/43423]
专题	中国科学院过程工程研究所
通讯作者	Liu, Luqi; Zhang, Zhong
作者单位	1.CAS Ctr Excellence Nanosci, Natl Ctr Nanosci & Technol, CAS Key Lab Nanosyst & Hierarch Fabricat, Beijing 100190, Peoples R China 2.Univ Toronto, Dept Mech & Ind Engn, Toronto, ON M5S 3G8, Canada 3.Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China 4.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 5.Wuhan Univ, Sch Civil Engn, Dept Engn Mech, Wuhan 430072, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Wang, Guorui,Zhang, Zhepeng,Wang, Yanlei,et al. Out-of-Plane Deformations Determined Mechanics of Vanadium Disulfide (VS2) Sheets[J]. ACS APPLIED MATERIALS & INTERFACES,2021,13(2):3040-3050.
APA	Wang, Guorui.,Zhang, Zhepeng.,Wang, Yanlei.,Gao, Enlai.,Jia, Xiangzheng.,...&Zhang, Zhong.(2021).Out-of-Plane Deformations Determined Mechanics of Vanadium Disulfide (VS2) Sheets.ACS APPLIED MATERIALS & INTERFACES,13(2),3040-3050.
MLA	Wang, Guorui,et al."Out-of-Plane Deformations Determined Mechanics of Vanadium Disulfide (VS2) Sheets".ACS APPLIED MATERIALS & INTERFACES 13.2(2021):3040-3050.