Atomically sharp interlayer stacking shifts at anti-phase grain boundaries in overlapping MoS2 secondary layers

Nanoscale
Si ZhouJamie H Warner

Abstract

When secondary domains nucleate and grow on the surface of monolayer MoS2, they can extend across grain boundaries in the underlying monolayer MoS2 and form overlapping sections. We present an atomic level study of overlapping antiphase grain boundaries (GBs) in MoS2 monolayer-bilayers using aberration-corrected annular dark field scanning transmission electron microscopy. In particular we focus on the antiphase GB within a monolayer and track its propagation through an overlapping bilayer domain. We show that this leads to an atomically sharp interface between 2H and 3R interlayer stacking in the bilayer region. We have studied the micro-nanoscale "meandering" of the antiphase GB in MoS2, which shows a directional dependence on the density of 4 and 8 member ring defects, as well as sharp turning angles 90°-100° that are mediated by a special 8-member ring defect. Density functional theory has been used to explore the overlapping interlayer stacking around the antiphase GBs, confirming our experimental findings. These results show that overlapping secondary bilayer MoS2 domains cause atomic structure modification to underlying anti-phase GB sites to accommodate the van der Waals interactions.

References

Dec 15, 1994·Physical Review. B, Condensed Matter·P E Blöchl
Oct 15, 1996·Physical Review. B, Condensed Matter·G Kresse, J Furthmüller
Oct 28, 1996·Physical Review Letters·J P PerdewM Ernzerhof
Jul 20, 2005·Proceedings of the National Academy of Sciences of the United States of America·K S NovoselovA K Geim
Feb 1, 2008·Physical Review Letters·Ivar MartinA F Morpurgo
Mar 30, 2010·Nature Nanotechnology·Jayeeta LahiriMatthias Batzill
Jun 22, 2010·Nature Nanotechnology·Sukang BaeSumio Iijima
Aug 24, 2010·Nature Nanotechnology·C R DeanJ Hone
Aug 24, 2010·Nature Materials·Oleg V Yazyev, Steven G Louie
Nov 13, 2010·Science·Rassin GrantabRodney S Ruoff
Jan 7, 2011·Nature·Pinshane Y HuangDavid A Muller
Jan 15, 2011·Physical Review Letters·Kin Fai MakTony F Heinz
Feb 1, 2011·Nature Nanotechnology·B RadisavljevicA Kis
Jul 20, 2011·Nano Letters·Zhenhua QiaoAllan H Macdonald
Aug 3, 2011·Physical Chemistry Chemical Physics : PCCP·Yandong MaBaibiao Huang
Dec 15, 2011·ACS Nano·Zongyou YinHua Zhang
Apr 3, 2012·Advanced Materials·Yi-Hsien LeeTsung-Wu Lin
Apr 25, 2012·Nano Letters·Jeil JungAllan H Macdonald
Aug 7, 2012·Physical Review Letters·Hannu-Pekka KomsaArkady V Krasheninnikov
Nov 8, 2012·Nature Nanotechnology·Qing Hua WangMichael S Strano
Feb 8, 2013·Microscopy·Fumio HosokawaKazutomo Suenaga
May 7, 2013·Nature Materials·Arend M van der ZandeJames C Hone
May 11, 2013·Nano Letters·Wu ZhouJuan-Carlos Idrobo
Sep 21, 2013·Nature Communications·Naoki YamajiJian Feng Ma
Sep 30, 2014·Nature Materials·Yongji GongPulickel M Ajayan
Jul 7, 2017·ACS Omega·Si ZhouJamie H Warner

❮ Previous
Next ❯

Methods Mentioned

BETA
transmission electron microscopy

Software Mentioned

JEMS
Vienna Ab initio Simulation Package

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.