scholarly journals The tesseract in two dimensional materials, a DFT approach

RSC Advances ◽  
2020 ◽  
Vol 10 (15) ◽  
pp. 8618-8627 ◽  
Author(s):  
Long Zhou ◽  
Guanglong Zhang ◽  
Fangyuan Xiu ◽  
Shuwei Xia ◽  
Liangmin Yu
Keyword(s):  
Natural Gas ◽  
Molecular Sieve ◽  
High Selectivity ◽  
Two Dimensional ◽  
Ambient Conditions ◽  
2D Material ◽  
Two Dimensional Materials

The tesseract contained 2D material, C24Se12, is an effective molecular sieve with high selectivity to recover helium from natural gas under ambient conditions.

Surface strategies for catalytic CO2 reduction: from two-dimensional materials to nanoclusters to single atoms

2019 ◽  
Vol 48 (21) ◽  
pp. 5310-5349 ◽  
Author(s):  
Liming Wang ◽  
Wenlong Chen ◽  
Doudou Zhang ◽  
Yaping Du ◽  
Rose Amal ◽  
...  
Keyword(s):  
Co2 Reduction ◽  
Single Atom ◽  
Two Dimensional ◽  
2D Material ◽  
Single Atoms ◽  
Two Dimensional Materials

This work constructively reviewed and predicted the surface strategies for catalytic CO2 reduction with 2D material, nanocluster and single-atom catalysts

A 2D material-based floating gate device with linear synaptic weight update

Nanoscale ◽  
2020 ◽  
Vol 12 (48) ◽  
pp. 24503-24509
Author(s):  
Eunpyo Park ◽  
Minkyung Kim ◽  
Tae Soo Kim ◽  
In Soo Kim ◽  
Jongkil Park ◽  
...  
Keyword(s):  
Synaptic Weight ◽  
Floating Gate ◽  
Two Dimensional ◽  
Coupling Ratio ◽  
2D Material ◽  
Two Dimensional Materials

A three-terminal top-gated flash device based on two-dimensional materials with a high coupling ratio exhibits highly linear synaptic weight updates.

Surface chemistry and catalysis confined under two-dimensional materials

2017 ◽  
Vol 46 (7) ◽  
pp. 1842-1874 ◽  
Author(s):  
Qiang Fu ◽  
Xinhe Bao
Keyword(s):  
Surface Chemistry ◽  
Chemical Processes ◽  
Solid Surfaces ◽  
Two Dimensional ◽  
2D Material ◽  
Confined Spaces ◽  
Two Dimensional Materials

Interfaces between 2D material overlayers and solid surfaces provide confined spaces for chemical processes, which have stimulated new chemistry under a 2D cover.

scholarly journals Compositing Two-Dimensional Materials with TiO2 for Photocatalysis

Catalysts ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 590 ◽  
Author(s):  
Yu Ren ◽  
Yuze Dong ◽  
Yaqing Feng ◽  
Jialiang Xu
Keyword(s):  
High Surface ◽  
High Surface Area ◽  
Chemical Properties ◽  
Clean Energy ◽  
Two Dimensional ◽  
Preparation Methods ◽  
2D Material ◽  
Carrier Recombination ◽  
Two Dimensional Materials ◽  
Physical And Chemical

Energy shortage and environmental pollution problems boost in recent years. Photocatalytic technology is one of the most effective ways to produce clean energy—hydrogen and degrade pollutants under moderate conditions and thus attracts considerable attentions. TiO2 is considered one of the best photocatalysts because of its well-behaved photo-corrosion resistance and catalytic activity. However, the traditional TiO2 photocatalyst suffers from limitations of ineffective use of sunlight and rapid carrier recombination rate, which severely suppress its applications in photocatalysis. Surface modification and hybridization of TiO2 has been developed as an effective method to improve its photocatalysis activity. Due to superior physical and chemical properties such as high surface area, suitable bandgap, structural stability and high charge mobility, two-dimensional (2D) material is an ideal modifier composited with TiO2 to achieve enhanced photocatalysis process. In this review, we summarized the preparation methods of 2D material/TiO2 hybrid and drilled down into the role of 2D materials in photocatalysis activities.

scholarly journals Iron-rich talc as air-stable platform for magnetic two-dimensional materials

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Aleksandar Matković ◽  
Lukas Ludescher ◽  
Oleg E. Peil ◽  
Apoorva Sharma ◽  
Kevin-P. Gradwohl ◽  
...  
Keyword(s):  
Quantum Interference ◽  
Magnetic Ordering ◽  
High Spin State ◽  
Ferromagnetic Behavior ◽  
Two Dimensional ◽  
Ambient Conditions ◽  
Force Microscopy ◽  
Two Dimensional Materials ◽  
Future Technologies ◽  
End Members

AbstractIntrinsically magnetic layered materials – especially monolayers – suffer from the lack of ambient stability and mostly exhibit magnetic ordering only at cryogenic temperatures. These restrains impose a great challenge for the integration of two-dimensional magnetic materials into future technologies. We propose to overcome this by exploiting phyllosilicates, such as iron-rich talc. Via combined magnetic force microscopy in applied external magnetic fields, superconducting quantum interference device magnetometry, first-principle calculations, and structural analysis, we demonstrate that incorporated iron ions in talc are in a very robust high spin state, resulting in a weak ferromagnetic behavior at room temperature. Iron-rich talc can be thinned down to a monolayer, remaining fully stable under ambient conditions, and retaining magnetic properties even in monolayers. Finally, we propose iron-rich end members of the phyllosilicates as very promising platforms for air-stable magnetic monolayers.

Polymorphic phase transition of a membrane protein - analysis of continuous diffuse electron diffraction intensity

1986 ◽  
Vol 44 ◽  
pp. 166-167
Author(s):  
Douglas L. Dorset ◽  
Andrew K. Massalski
Keyword(s):  
Molecular Sieve ◽  
Three Dimensional ◽  
Pore Geometry ◽  
Two Dimensional ◽  
Diffraction Intensity ◽  
Polymorphic Phase Transition ◽  
E Coli ◽  
Crystallographic Study ◽  
Hexagonal Form ◽  
Polymorphic Forms

Matrix porin, the ompF gene product of E. coli, has been the object of a electron crystallographic study of its pore geometry in an attempt to understand its function as a membrane molecular sieve. Three polymorphic forms have been found for two-dimensional crystals reconstituted in phospholipid, two hexagonal forms with different lipid content and an orthorhombic form coexisting with and similar to the hexagonal form found after lipid loss. In projection these have been shown to retain the same three-fold pore triplet geometry and analyses of three-dimensional data reveal that the small hexagonal and orthorhombic polymorphs have similar structure as well as unit cell spacings.

Redox-Active Approach Towards New Magnetic And Conductive Two-Dimensional Materials

2018 ◽  
Author(s):  
Penny Perlepe ◽  
Rodolphe Clérac ◽  
Itziar Oyarzabal ◽  
Corine Mathonière
Keyword(s):  
Two Dimensional ◽  
Active Approach ◽  
Redox Active ◽  
Two Dimensional Materials

scholarly journals Polarization-sensitive photodetectors based on three-dimensional molybdenum disulfide (MoS2) field-effect transistors

Nanophotonics ◽  
2020 ◽  
Vol 9 (16) ◽  
pp. 4719-4728
Author(s):  
Tao Deng ◽  
Shasha Li ◽  
Yuning Li ◽  
Yang Zhang ◽  
Jingye Sun ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Three Dimensional ◽  
Polarized Light ◽  
Optical Field ◽  
Two Dimensional ◽  
Polarization Ratio ◽  
Two Dimensional Materials

AbstractThe molybdenum disulfide (MoS2)-based photodetectors are facing two challenges: the insensitivity to polarized light and the low photoresponsivity. Herein, three-dimensional (3D) field-effect transistors (FETs) based on monolayer MoS2 were fabricated by applying a self–rolled-up technique. The unique microtubular structure makes 3D MoS2 FETs become polarization sensitive. Moreover, the microtubular structure not only offers a natural resonant microcavity to enhance the optical field inside but also increases the light-MoS2 interaction area, resulting in a higher photoresponsivity. Photoresponsivities as high as 23.8 and 2.9 A/W at 395 and 660 nm, respectively, and a comparable polarization ratio of 1.64 were obtained. The fabrication technique of the 3D MoS2 FET could be transferred to other two-dimensional materials, which is very promising for high-performance polarization-sensitive optical and optoelectronic applications.

scholarly journals Complex magnetism of the two-dimensional antiferromagnetic Ge2F: from a Néel spin-texture to a potential antiferromagnetic skyrmion

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8654-8663
Author(s):  
Fatima Zahra Ramadan ◽  
Flaviano José dos Santos ◽  
Lalla Btissam Drissi ◽  
Samir Lounis
Keyword(s):  
Density Functional Theory ◽  
Magnetic Properties ◽  
Density Functional ◽  
Low Energy ◽  
Two Dimensional ◽  
Functional Theory ◽  
2D Material ◽  
Energy Models ◽  
Spin Texture

Based on density functional theory combined with low-energy models, we explore the magnetic properties of a hybrid atomic-thick two-dimensional (2D) material made of germanene doped with fluorine atoms in a half-fluorinated configuration (Ge2F).

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