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25 Mar 11:43

Doping on demand in 2D devices

by Sung-Joon Lee

Nature Electronics, Published online: 24 February 2020; doi:10.1038/s41928-020-0376-1

High-resolution doping patterns can be reversibly written in van der Waals heterostructures using a combination of an electron beam and a back-gate voltage.
02 Mar 08:18

Atomic-scale investigation of enhanced lithium, sodium and magnesium storage performance from defects in MoS2/graphene heterostructures

Nanoscale, 2020, 12,7098-7108
DOI: 10.1039/C9NR09352D, Paper
Ke Xu, Ningbo Liao, Miao Zhang, Wei Xue
For the first time, insertion and removal of Li, Na and Mg in MoS2/graphene system are studied. An insertion/removal process-based algorithm is proposed to calculate reversible capacity.
The content of this RSS Feed (c) The Royal Society of Chemistry
02 Mar 08:10

Surface spin magnetism controls the polarized exciton emission from CdSe nanoplatelets

by Elena V. Shornikova

Nature Nanotechnology, Published online: 27 January 2020; doi:10.1038/s41565-019-0631-7

The surface of CdSe nanoplatelets can exhibit a paramagnetic behaviour that influences the polarization properties of the optical emission.
02 Mar 08:09

Waveguide-integrated van der Waals heterostructure photodetector at telecom wavelengths with high speed and high responsivity

by Nikolaus Flöry

Nature Nanotechnology, Published online: 03 February 2020; doi:10.1038/s41565-019-0602-z

The low carrier mobilities of TMDCs pose a challenge for applications in high-speed photodetection. Integrating vertical two-dimensional heterostructures with photonic waveguides allows the intrinsic speed limitations to be overcome and record-high photodetection bandwidths to be achieved.
26 Feb 03:08

Low-loss composite photonic platform based on 2D semiconductor monolayers

by Ipshita Datta

Nature Photonics, Published online: 24 February 2020; doi:10.1038/s41566-020-0590-4

Strong electrorefractive effects in semiconductor transition metal dichalcogenides (TMDs) at near-infrared wavelengths, where the TMDs are transparent, are observed and used to demonstrate photonic devices based on a composite SiN–TMD platform with large phase modulation, minimal induced loss and low electrical power consumption.
26 Feb 03:08

A two-dimensional Ru@MXene catalyst for highly selective ambient electrocatalytic nitrogen reduction

Nanoscale, 2020, 12,10933-10938
DOI: 10.1039/D0NR00788A, Communication
Anmin Liu, Mengfan Gao, Xuefeng Ren, Fanning Meng, Yanan Yang, Qiyue Yang, Weixin Guan, Liguo Gao, Xingyou Liang, Tingli Ma
Compared with the traditional Haber–Bosch process, electrochemical ammonia synthesis has attracted much attention owing to its low energy consumption, low pollution potential, and sustainability.
The content of this RSS Feed (c) The Royal Society of Chemistry
26 Feb 03:07

InTeI: a novel wide-bandgap 2D material with desirable stability and highly anisotropic carrier mobility

Nanoscale, 2020, 12,5888-5897
DOI: 10.1039/C9NR10619G, Paper
Shujuan Jiang, Jingyu Li, Weizhen Chen, Huabing Yin, Guang-Ping Zheng, Yuanxu Wang
We have predicted a novel class of 2D wide-bandgap InTeI layered semiconductors, which have high stability, tunable electronic property, and ultra-high and anisotropic carrier mobility.
The content of this RSS Feed (c) The Royal Society of Chemistry
26 Feb 03:07

Ultrathin circular polarimeter based on chiral plasmonic metasurface and monolayer MoSe2

Nanoscale, 2020, 12,5906-5913
DOI: 10.1039/C9NR10768A, Paper
Qiao Jiang, Bowen Du, Meiling Jiang, Donglin Liu, Zhixin Liu, Bowen Li, Zheng Liu, Feng Lin, Xing Zhu, Zheyu Fang
Combined with chiral plasmonic metasurface, detecting CP light within a compact structure can be realized in the platform of two-dimensional materials, which benefits from the excellent optoelectronic properties and ultrathin thickness of them.
The content of this RSS Feed (c) The Royal Society of Chemistry
26 Feb 03:06

2D graphdiyne: an excellent ultraviolet nonlinear absorption material

Nanoscale, 2020, 12,6243-6249
DOI: 10.1039/C9NR10704E, Communication
Fang Zhang, Guowei Liu, Junjie Yuan, Zhengping Wang, Tianhong Tang, Shenggui Fu, Huanian Zhang, Zhongsheng Man, Fei Xing, Xinguang Xu
GDY is veritable ultraviolet OL material, which has potential applications in ultraviolet optics.
The content of this RSS Feed (c) The Royal Society of Chemistry
26 Feb 03:06

Effect of thiolate-ligand passivation on the electronic structure and optical absorption properties of ultrathin one and two-dimensional gold nanocrystals

Nanoscale, 2020, 12,5554-5566
DOI: 10.1039/C9NR06051K, Paper
Liang Yang, Pu Wang, Zhenhua Yang, Yong Pei
Gold nanomaterials, including one-dimensional (1D) gold nanorods (AuNRs) and nanowires (AuNWs) and two-dimensional (2D) gold nanoprisms with a large surface area and stability, have attracted widespread research interest due to their wide potential applications.
The content of this RSS Feed (c) The Royal Society of Chemistry
26 Feb 03:05

Effect of temperature on Raman intensity of nm-thick WS2: combined effects of resonance Raman, optical properties, and interface optical interference

Nanoscale, 2020, 12,6064-6078
DOI: 10.1039/C9NR10186A, Paper
Hamidreza Zobeiri, Shen Xu, Yanan Yue, Qianying Zhang, Yangsu Xie, Xinwei Wang
Temperature dependent Raman intensity of 2D materials features very rich information about the material's electronic structure, optical properties, and nm-level interface spacing.
The content of this RSS Feed (c) The Royal Society of Chemistry
26 Feb 03:03

Initialization and read-out of intrinsic spin defects in a van der Waals crystal at room temperature

by Andreas Gottscholl

Nature Materials, Published online: 24 February 2020; doi:10.1038/s41563-020-0619-6

An ensemble of spins associated with an intrinsic defect of two-dimensional hexagonal boron nitride is shown to be optically addressable, allowing spin polarization of its triplet ground state and providing evidence of spin coherence.
26 Feb 03:03

Bandgap tuning of two-dimensional materials by sphere diameter engineering

by Mengqi Zeng

Nature Materials, Published online: 24 February 2020; doi:10.1038/s41563-020-0622-y

The bandgap of 2D molybdenum disulfide can be tuned uniformly, reproducibly and precisely over a large range by using a glass sphere support and changing the diameter of the spheres.
24 Feb 06:31

Strain manipulation of the polarized optical response in two-dimensional GaSe layers

Nanoscale, 2020, 12,4069-4076
DOI: 10.1039/C9NR09057F, Paper
Jiangpeng Zhou, Yaping Wu, Hao Wang, Zhiming Wu, Xu Li, Weihuang Yang, Congming Ke, Shiqiang Lu, Chunmiao Zhang, Junyong Kang
Considerable enhancements of room temperature circular polarization and anisotropic optical response in 2D GaSe are achieved through the strain manipulation.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:29

Creation of a two-dimensional polymer and graphene heterostructure

Nanoscale, 2020, 12,5170-5174
DOI: 10.1039/C9NR10858K, Paper
Honglei Wang, Jing Yang, Pei Zhao, Armin Gölzhäuser, Wei Liu, Xudong Chen, Zhikun Zheng
We introduced a rationally synthesized two-dimensional polymer to tune the properties of graphene without changing its intrinsic structure.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:28

Recent progress and advances in the environmental applications of MXene related materials

Nanoscale, 2020, 12,3574-3592
DOI: 10.1039/C9NR08542D, Minireview
Junyu Chen, Qiang Huang, Hongye Huang, Liucheng Mao, Meiying Liu, Xiaoyong Zhang, Yen Wei
MXenes are a new type of two-dimensional (2D) transition metal carbide or carbonitride material with a 2D structure similar to graphene.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:27

Intrinsic ferromagnetism with high temperature, strong anisotropy and controllable magnetization in the CrX (X = P, As) monolayer

Nanoscale, 2020, 12,5464-5470
DOI: 10.1039/C9NR10322H, Paper
An-Ning Ma, Pei-Ji Wang, Chang-Wen Zhang
2D ferromagnetic (FM) materials with high temperature, large magnetocrystalline anisotropic energy (MAE), and controllable magnetization are highly desirable for novel nanoscale spintronic applications.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:26

Interlayer coupling prolonged the photogenerated carrier lifetime of few layered Bi2OS2 semiconductors

Nanoscale, 2020, 12,6057-6063
DOI: 10.1039/D0NR00447B, Paper
Xianghong Niu, Guangfen Wu, Xiwen Zhang, Jinlan Wang
Interlayer coupling inducing an anomalous layer number dependent property of carrier lifetimes in Bi2OS2 nanosheet.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:24

Magnetic i-MXenes: a new class of multifunctional two-dimensional materials

Nanoscale, 2020, 12,5995-6001
DOI: 10.1039/C9NR10181K, Paper
Qiang Gao, Hongbin Zhang
Based on density functional theory calculations, we investigated two-dimensional in-plane ordered MXenes (i-MXenes), focusing particularly on their magnetic properties.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:22

Non-linear Raman scattering intensities in graphene

Nanoscale, 2020, 12,5612-5617
DOI: 10.1039/C9NR10654E, Paper
Veit Giegold, Lucas Lange, Richard Ciesielski, Achim Hartschuh
The Raman G and 2D band intensities in graphene result from electronic-temperature dependent interference of quantum pathways.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:22

Engineering interfacial structures to accelerate hydrogen evolution efficiency of MoS2 over a wide pH range

Nanoscale, 2020, 12,6810-6820
DOI: 10.1039/D0NR00008F, Paper
Shasha Li, Suchada Sirisomboonchai, Xiaowei An, Xuli Ma, Peng Li, Lixia Ling, Xiaogang Hao, Abuliti Abudula, Guoqing Guan
A flower-like CoS2@MoS2 electrocatalyst with a 3D heterostructure grown on carbon paper was fabricated for the efficient catalysis of the hydrogen evolution reaction over a wide pH range.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:22

Assembly of 1T′-MoS2 based fibers for flexible energy storage

Nanoscale, 2020, 12,6562-6570
DOI: 10.1039/D0NR00487A, Paper
Hui Pan, Jingyi Lin, Xiaoyu Han, Yao Li, Xin Meng, Ruichun Luo, Joseph James Broughton, Muhammad Imtiaz, Zhixin Chen, Dawei Wang, Shenmin Zhu, Pan Liu, Zhengxiao Guo
The hydrothermal synthesis of well-soluble 1T′-MoS2 sheets and the assembly of 1T′-MoS2/graphene oxide fibers from liquid crystals endow excellent electrochemical properties.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:21

Rapid and mass-producible synthesis of high-crystallinity MoSe2 nanosheets by ampoule-loaded chemical vapor deposition

Nanoscale, 2020, 12,6991-6999
DOI: 10.1039/C9NR10418F, Paper
Na Liu, Woong Choi, Hyeongi Kim, Chulseung Jung, Jeonghun Kim, Soo Ho Choo, Yena Kwon, Byeong-Seon An, Seongin Hong, Seongjoon So, Cheol-Woong Yang, Jaehyun Hur, Sunkook Kim
Rapid growth of high-crystalline MoSe2 nanosheets with grain size of up to ∼100 μm and yield of milligrams per hour.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:21

A self-powered photodetector based on two-dimensional boron nanosheets

Nanoscale, 2020, 12,5313-5323
DOI: 10.1039/D0NR00005A, Communication
Dingtao Ma, Rui Wang, Jinlai Zhao, Qianyuan Chen, Leiming Wu, Delong Li, Liumei Su, Xiantao Jiang, Zhengqian Luo, Yanqi Ge, Jianqing Li, Yupeng Zhang, Han Zhang
In this work, we demonstrated that B nanosheets can be applied for self-powered photodetectors with superior photoresponsivity and excellent stability.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:20

Macroscopic two-dimensional monolayer films of gold nanoparticles: fabrication strategies, surface engineering and functional applications

Nanoscale, 2020, 12,7433-7460
DOI: 10.1039/C9NR09420B, Review Article
Liping Song, Youju Huang, Zhihong Nie, Tao Chen
The recent progress of 2D monolayer films of gold nanoparticles in constructing approaches, surface engineering strategies and functional applications is summarized.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Feb 06:14

Dynamics and efficient conversion of excitons to trions in non-uniformly strained monolayer WS2

by Moshe G. Harats

Nature Photonics, Published online: 17 February 2020; doi:10.1038/s41566-019-0581-5

The photoluminescence spectrum of WS2 is modified under strain applied by an atomic force microscope probe. The free carrier redistribution yields conversion of excitons to trions with conversion efficiency approaching 100%.
24 Feb 06:12

Fatigue of graphene

by Teng Cui

Nature Materials, Published online: 20 January 2020; doi:10.1038/s41563-019-0586-y

Mechanical fatigue occurs under cyclic stress much lower than the tensile strength, but this has not been investigated for 2D materials. Here, graphene is found to have a fatigue life of 109 cycles.
24 Feb 06:12

Design of van der Waals interfaces for broad-spectrum optoelectronics

by Nicolas Ubrig

Nature Materials, Published online: 03 February 2020; doi:10.1038/s41563-019-0601-3

Type-II van der Waals interfaces formed by different two-dimensional materials enable robust interlayer optical transitions, regardless of common issues such as lattice constant mismatch, layer misalignment or whether the constituent compounds are direct or indirect band semiconductors.
24 Feb 06:12

Black phosphorus as a bipolar pseudospin semiconductor

by Sung Won Jung

Nature Materials, Published online: 03 February 2020; doi:10.1038/s41563-019-0590-2

Anisotropic honeycomb crystal of black phosphorous is found to have pseudospin polarization greater than 95% at room temperature, attributed to the merging of Dirac cones. This bipolar pseudospin semiconductor may be useful for pseudospintronics.
24 Feb 06:06

A platform for making and transferring oxide films

by Atsushi Tsukazaki

Nature, Published online: 05 February 2020; doi:10.1038/d41586-020-00206-1

Crystalline films of technologically useful oxide materials have been grown by a method based on surface-modified substrates. Unlike usual oxide films, these can be easily transferred to any material.