Controllable Growth and Formation Mechanisms of Dislocated WS2 Spirals

Nano Letters
Xiaopeng FanAnlian Pan

Abstract

Two-dimensional (2D) layered metal dichalcogenides can form spiral nanostructures by a screw-dislocation-driven mechanism, which leads to changes in crystal symmetry and layer stackings that introduce attractive physical properties different from their bulk and few-layer nanostructures. However, controllable growth of spirals is challenging and their growth mechanisms are poorly understood. Here, we report the controllable growth of WS2 spiral nanoplates with different stackings by a vapor phase deposition route and investigate their formation mechanisms by combining atomic force microscopy with second harmonic generation imaging. Previously not observed "spiral arm" features could be explained as covered dislocation spiral steps, and the number of spiral arms correlates with the number of screw dislocations initiated at the bottom plane. The supersaturation-dependent growth can generate new screw dislocations from the existing layers, or even new layers templated by existing screw dislocations. Different number of dislocations and orientation of new layers result in distinct morphologies, different layer stackings, and more complex nanostructures, such as triangular spiral nanoplates with hexagonal spiral pattern on top. This ...Continue Reading

References

May 3, 2008·Science·Matthew J BiermanSong Jin
Jan 15, 2011·Physical Review Letters·Kin Fai MakTony F Heinz
Feb 1, 2011·Nature Nanotechnology·B RadisavljevicA Kis
Sep 8, 2011·Nano Letters·Stephen A MorinSong Jin
Jun 8, 2012·Nature Communications·Ting CaoJi Feng
Jun 19, 2012·Nature Nanotechnology·Hualing ZengXiaodong Cui
Jun 7, 2013·Accounts of Chemical Research·Fei MengSong Jin
Dec 11, 2013·ACS Applied Materials & Interfaces·Rui WangHui Zhao
Feb 26, 2014·Journal of the American Chemical Society·Honglai LiXiangfeng Duan
May 3, 2014·Science·Xiaobo YinXiang Zhang
May 16, 2014·Angewandte Chemie·Awei ZhuangJie Zeng
Jul 6, 2014·Scientific Reports·Corey JanischZhiwen Liu
Sep 1, 2014·Nature Nanotechnology·Tao JiangShiwei Wu
Sep 30, 2014·Nature Materials·Yongji GongPulickel M Ajayan
Oct 25, 2014·Nano Letters·Liming ZhangPeidong Yang
Apr 15, 2015·Journal of the American Chemical Society·Honglai LiXiangfeng Duan
Jun 11, 2015·Journal of the American Chemical Society·Xu ZhouDapeng Yu
Feb 9, 2017·Journal of the American Chemical Society·Melinda J ShearerSong Jin

❮ Previous
Next ❯

Citations

Apr 21, 2020·Nanotechnology·Zachary Patrick DeGregorioStephen A Campbell
Mar 7, 2020·Nano Letters·Xiaopeng FanRitesh Agarwal
Aug 8, 2018·Journal of the American Chemical Society·Liang CaiSong Jin
Sep 11, 2021·Journal of the American Chemical Society·Hubiao HuangTakuzo Aida
Dec 4, 2021·Advanced Materials·Ping ChenZhong Lin Wang

❮ Previous
Next ❯

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.