Revealing 3D Ripple Structure and Its Dynamics in Freestanding Monolayer MoSe2 by Single-Frame 2D Atomic Image Reconstruction

Li, Songge4,5,6; Wang, Yun-Peng7; Ning, Shoucong8; Xu, Kai1,2; Pantelides, Sokrates T.9,10; Zhou, Wu1,2,3; Lin, Junhao4,5,6

2023-02-22

10.1021/acs.nanolett.2c04476

NANO LETTERS   影响因子和分区

1530-6984

1530-6992

An atomic-scale ripple structure has been revealed by electron tomography based on sequential projected atomic -resolution images, but it requires harsh imaging conditions with negligible structure evolution of the imaged samples. Here, we demonstrate that the ripple structure in monolayer MoSe2 can be facilely reconstructed from a single-frame scanning transmission electron microscopy (STEM) image collected at designated collection angles. The intensity and shape of each Se2 atomic column in the single-frame projected STEM image are synergisti-cally combined to precisely map the slight misalignments of two Se atoms induced by rippling, which is then converted to three-dimensional (3D) ripple distortions. The dynamics of 3D ripple deformation can thus be directly visualized at the atomic scale by sequential STEM imaging. In addition, the reconstructed images provide the first opportunity for directly testing the validity of the classical theory of thermal fluctuations. Our method paves the way for a 3D reconstruction of a dynamical process in two-dimensional materials with a reasonable temporal resolution.

monolayer MoSe2 structure reconstruction medium angle annular dark field (MAADF)

SCI ; EI

英语

NI论文

第一 ; 通讯

National Natural Science Foundation of China["11974156","51872285"] ; Guangdong Innovative and Entrepreneurial Research Team Program[2019ZT08C044] ; Shenzhen Science and Technology Program["KQTD20190929173815000","20200925161102001"] ; Science, Technology and Innovation Commission of Shenzhen Municipality[ZDSYS20190902092905285]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000936478300001

AMER CHEMICAL SOC

20230813613787

Atomic layer deposition ; Atoms ; Electric impedance tomography ; High resolution transmission electron microscopy ; Image reconstruction ; Scanning electron microscopy ; Selenium compounds

Optical Devices and Systems:741.3 ; Coating Techniques:813.1 ; Atomic and Molecular Physics:931.3 ; Crystal Growth:933.1.2

MATERIALS SCIENCE

Web of Science

1.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
2.Univ Chinese Acad Sci, CAS Key Lab Vacuum Phys, Beijing 100049, Peoples R China
3.Univ Chinese Acad Sci, CAS Ctr Excellence Topol Quantum Computat, Beijing 100049, Peoples R China
4.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
5.Southern Univ Sci & Technol, Shenzhen Key Lab Adv Quantum Funct Mat & Devices, Shenzhen 518055, Peoples R China
6.Quantum Sci Ctr Guangdong Hong Kong Macao Greater, Hong Kong 518045, Peoples R China
7.Cent South Univ, Sch Phys & Elect, Hunan Key Lab Super Micro Struct & Ultrafast Proc, Changsha 410083, Peoples R China
8.Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore
9.Vanderbilt Univ, Dept Phys & Astron, Nashville, TN 37235 USA
10.Vanderbilt Univ, Dept Elect & Comp Engn, Nashville, TN 37235 USA

Li, Songge,Wang, Yun-Peng,Ning, Shoucong,et al. Revealing 3D Ripple Structure and Its Dynamics in Freestanding Monolayer MoSe2 by Single-Frame 2D Atomic Image Reconstruction[J]. NANO LETTERS,2023,23(4):1298-1305.

Li, Songge.,Wang, Yun-Peng.,Ning, Shoucong.,Xu, Kai.,Pantelides, Sokrates T..,...&Lin, Junhao.(2023).Revealing 3D Ripple Structure and Its Dynamics in Freestanding Monolayer MoSe2 by Single-Frame 2D Atomic Image Reconstruction.NANO LETTERS,23(4),1298-1305.

Li, Songge,et al."Revealing 3D Ripple Structure and Its Dynamics in Freestanding Monolayer MoSe2 by Single-Frame 2D Atomic Image Reconstruction".NANO LETTERS 23.4(2023):1298-1305.