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Graphene Market Report 2016 By Industry Size, Share & Key Drivers 2024 - The Industry News Room

Google News - Graphene - 56 min 34 sec ago
Graphene Market Report 2016 By Industry Size, Share & Key Drivers 2024  The Industry News Room

The “Global Graphene Market Set for Rapid Growth, to Reach USD 193.68 Million by 2022” research report offers an in-depth evaluation of all happenings in the ...

2D Materials Market Is Booming Worldwide | 2D Tech Graphene, Abalonyx AS, ACS Material - The Market NewsWire

Google News - Graphene - 1 hour 36 min ago
2D Materials Market Is Booming Worldwide | 2D Tech Graphene, Abalonyx AS, ACS Material  The Market NewsWire

Latest Study on Industrial Growth of Global (United States, European Union and China) 2D Materials Market 2019-2025. A detailed study accumulated to offer ...

Global Graphene Electronics Market-Industry Analysis and Forecast (2018-2026) - SocioHerald

Google News - Graphene - 1 hour 41 min ago
Global Graphene Electronics Market-Industry Analysis and Forecast (2018-2026)  SocioHerald

Global Graphene Electronics Market was valued US$ 315.94 Mn in 2017 and is expected to reach US$ 3951.85Mn by 2026 at a CAGR of 37.14% during the ...

Graphene Market - Growth, Trends, and Forecast (2019-2024). - Market Structure News

Google News - Graphene - 2 hours 29 min ago
Graphene Market - Growth, Trends, and Forecast (2019-2024).  Market Structure News

Graphene Market 2019 report provides the company profile, primary and Secondary Research, capacity, and market shares for each competitor.

Global Graphene And 2-D Materials Market Status & Trend Report 2014-2024 - Market Structure News

Google News - Graphene - 2 hours 30 min ago
Global Graphene And 2-D Materials Market Status & Trend Report 2014-2024  Market Structure News

The proposed forecast also aids investors in identifying internal and external factors affecting a Graphene And 2-D Materials business.

Perfect proton selectivity in ion transport through two-dimensional crystals

Publications on 2D Materials - 3 hours 22 min ago

Nature Communications, Published online: 18 September 2019; doi:10.1038/s41467-019-12314-2Defect-free monolayers of graphene and hexagonal boron nitride are highly permeable to thermal protons, but are impenetrable to gases. Here the authors show that mechanically exfoliated crystals exhibit perfect proton selectivity, corroborating proton transport through the bulk without atomic-scale defects.

Published in: "Nature Communications".

The post Perfect proton selectivity in ion transport through two-dimensional crystals appeared first on 2D Research.

Moiré‐Potential‐Induced Band Structure Engineering in Graphene and Silicene

Publications on 2D Materials - 3 hours 22 min ago

In this Review, recent research on the effect of moiré periodic potential on the electronic structures of graphene and silicene is focused on. These novel phenomena, including new generation of Dirac cones, emergence of Van Hove singularities, Mott‐like insulating behavior, unconventional superconductivity, and electronic Kagome lattice and flat band with nontrivial edge state, are introduced. Abstract A moiré pattern results from the projection of one periodic pattern to another with relative lattice constant or misalignment and provides great periodic potential to modify the electronic properties of pristine materials. In this Review, recent research on the effect of the moiré superlattice on the electronic structures of graphene and silicene, both of which possess a honeycomb lattice, is focused on. The moiré periodic potential is introduced by the interlayer interaction to realize abundant phenomena, including new generation of Dirac cones, emergence of Van Hove singularities (vHs) at the cross point of two sets of Dirac cones, Mott‐like insulating behavior at half‐filling state, unconventional superconductivity, and electronic Kagome lattice and flat band with nontrivial edge state. The role of interlayer coupling strength, which is determined by twist angle and buckling degree, in these exotic properties is discussed in terms of both the theoretical prediction and experimental measurement, and finally, the challenges and outlook for this field are discussed.

Published in: "Small".

The post Moiré‐Potential‐Induced Band Structure Engineering in Graphene and Silicene appeared first on 2D Research.

Contiguous and Atomically Thin Pt Film with Supra‐Bulk Behavior Through Graphene‐Imposed Epitaxy

Publications on 2D Materials - 3 hours 26 min ago

Graphene‐templated monolayer to few‐multilayers of Pt, synthesized as contiguous 2D films by room temperature electrochemical methods, exhibits a {100} structure where the surface Pt atoms are more stable than their bulk Pt {100} or Pt {111} counterparts. This supra‐bulk stability of the 2D Pt/graphene results from a combination of inter‐planar PtC covalent bonding and inter/intraplanar metallic bonding. Abstract The nature of the atomic configuration and the bonding within epitaxial Pt‐graphene films is investigated. Graphene‐templated monolayer/few‐multilayers of Pt, synthesized as contiguous 2D films by room temperature electrochemical methods, is shown to exhibit a stable {100} structure in the 1–2 layer range. The fundamental question being investigated is whether surface Pt atoms rendered in these 2D architectures are as stable as those of their bulk Pt counterparts. Unsurprisingly, a single layer Pt on the graphene (Pt_1ML/GR) shows much larger Pt dissociation energy (−7.51 eV) than does an isolated Pt atom on graphene. However, the dissociation energy from Pt_1ML/GR is similar to that of bulk Pt(100), −7.77 eV, while in bi‐layer Pt on the graphene (Pt_2ML/GR), this energy changes to −8.63 eV, surpassing its bulk counterpart. At Pt_2ML/GR, the dissociation energy also slightly surpasses that of bulk Pt(111). Bulk‐like stability of atomically thin Pt–graphene results from a combination of interplanar PtC covalent bonding and inter/intraplanar metallic bonding. This unprecedented stability is also accompanied by a metal‐like presence of electronic states at the Fermi level. Such atomically thin metal‐graphene architectures can be a new stable platform for synthesizing 2D metallic films with various applications in catalysis, sensing, and electronics.

Published in: "Advanced Functional Materials".

The post Contiguous and Atomically Thin Pt Film with Supra‐Bulk Behavior Through Graphene‐Imposed Epitaxy appeared first on 2D Research.

Groningen team creates graphene-based 2D spin transistor

Graphene Info - 3 hours 32 min ago

Physicists from the University of Groningen constructed a two-dimensional spin transistor, in which spin currents were generated by an electric current through graphene. A monolayer of a transition metal dichalcogenide (TMD) was placed on top of the graphene to induce charge-to-spin conversion in the graphene.

Spintronics is an attractive alternative way of creating low-power electronic devices. It is not based on a charge current but rather on a current of electron spins. Spin is a quantum mechanical property of an electron, a magnetic moment that could be used to transfer or store information.

Groningen team creates graphene-based 2D spin transistor - Graphene-Info

Google News - Graphene - 3 hours 32 min ago
Groningen team creates graphene-based 2D spin transistor  Graphene-Info

Physicists from the University of Groningen constructed a two-dimensional spin transistor, in which spin currents were generated by an electric current through ...

Graphene Paper Market Size Research Report 2019 Global Industry Growth & Key Manufacturers Analysis - Daily News Collectors

Google News - Graphene - 4 hours 51 min ago
Graphene Paper Market Size Research Report 2019 Global Industry Growth & Key Manufacturers Analysis  Daily News Collectors

Graphene Paper Market research now available at Brand Essence Research encompasses an exhaustive Study of this business space with regards to pivotal ...

The perfect atomic-scale sieve - The University of Manchester

Google News - Graphene - 5 hours 1 min ago
The perfect atomic-scale sieve  The University of Manchester

Graphene is perfectly selective to protons and blocks even smallest ions like chlorine, University of Manchester research shows. This result will be important for ...

Amorphous Ruthenium‐Sulfide with Isolated Catalytic Sites for Pt‐Like Electrocatalytic Hydrogen Production Over Whole pH Range

Publications on 2D Materials - 5 hours 19 min ago

A pH‐universal amorphous ruthenium‐sulfide/sulfide‐doped graphene oxide (GO) catalyst with isolated active sites is fabricated by a hydrothermal reaction for hydrogen evolution reaction (HER) with Pt‐like activity. This is the first‐time abundant single atom catalytic sites are demonstrated in an amorphous catalyst. Theoretical calculations suggest that the isolated Ru sites exhibit Pt‐like bonding strength towards hydrogen, which contributes to the high intrinsic HER activity. Abstract Electrocatalytic hydrogen evolution reaction (HER) is an efficient way to generate hydrogen fuel for the storage of renewable energy. Currently, the widely used Pt‐based catalysts suffer from high costs and limited electrochemical stability; therefore, developing an efficient alternative catalyst is very urgent. Herein, one pot hydrothermal synthesis is reported of amorphous ruthenium‐sulfide (RuS x) nanoparticles (NPs) supported on sulfur‐doped graphene oxide (GO). The as‐obtained composite serves as a Pt‐like HER electrocatalyst. Achieving a current density of −10 mA cm−2 only requires a small overpotential (−31, −46, and −58 mV in acidic, neutral, and alkaline electrolyte, respectively) with high durability. The isolated Ru active site inducing Volmer–Heyrovsky mechanism in the RuS x NPs is demonstrated by the Tafel analysis and X‐ray absorption spectroscopy characterization. Theoretical simulation indicates the isolated Ru site exhibits Pt‐like Gibbs free energy of hydrogen adsorption (−0.21 eV) therefore generating high intrinsic HER activity. Moreover, the strong bonding between the RuS x and S–GO, as well as pH tolerance of RuS x are believed to contribute to the high stability. This work shows a new insight for amorphous materials and provides alternative opportunities in designing advanced electrocatalysts with low‐cost for HER in the hydrogen economy.

Published in: "Small".

The post Amorphous Ruthenium‐Sulfide with Isolated Catalytic Sites for Pt‐Like Electrocatalytic Hydrogen Production Over Whole pH Range appeared first on 2D Research.

Graphene for Supercapacitors Market Analysis, Forecast Of Business Revenue, Size, Leading Competitors and Growth Trends - The Charterian

Google News - Graphene - 6 hours 15 min ago
Graphene for Supercapacitors Market Analysis, Forecast Of Business Revenue, Size, Leading Competitors and Growth Trends  The Charterian

Graphene for Supercapacitors Market 2019-2024 report also carries in-depth case studies on the various countries which are actively involved in the Graphene ...

Enhanced hydrodynamic transport in near magic angle twisted bilayer graphene. (arXiv:1909.07884v1 [cond-mat.mes-hall])

Publications on 2D Materials - 9 hours 31 min ago

Using the semiclassical quantum Boltzmann theory and employing the Dirac model with twist angle-dependent Fermi velocity we obtain results for the electrical resistivity, the electronic thermal resistivity, the Seebeck coefficient, and the Wiedemann-Franz ratio in near magic angle twisted bilayer graphene, as functions of doping density (around the charge-neutrality-point) and modified Fermi velocity $tilde v$. The $tilde v$-dependence of the relevant scattering mechanisms, i.e. electron-hole Coulomb, long-ranged impurities, and acoustic gauge phonons, is considered in detail. We find a range of twist angles and temperatures, where the combined effect of momentum-non-conserving collisions (long-ranged impurities and phonons) is minimal, opening a window for the observation of strong hydrodynamic transport. Several experimental signatures are identified, such as a sharp dependence of the electric resistivity on doping density and a large enhancement of the Wiedemann-Franz ratio and the Seebeck coefficient.

Published : "arXiv Mesoscale and Nanoscale Physics".

The post Enhanced hydrodynamic transport in near magic angle twisted bilayer graphene. (arXiv:1909.07884v1 [cond-mat.mes-hall]) appeared first on 2D Research.

Global Monolayer Graphene Film Market Emerging Trends And New Technologies Research 2019 - Rapid News Network

Google News - Graphene - 10 hours 41 min ago
Global Monolayer Graphene Film Market Emerging Trends And New Technologies Research 2019  Rapid News Network

Report Summary. Monolayer Graphene Film -North America Market Status and Trend Report 2013-2023 offers a comprehensive analysis on Monolayer ...

Towards planar Iodine 2D crystal materials. (arXiv:1909.07604v1 [cond-mat.mtrl-sci])

Publications on 2D Materials - 11 hours 32 min ago

Usually, the octet rule has limited the 2D materials by elements within groups IIIA_VA, whose outmost electrons can be considered to form hybridization orbit by s wave and p wave. The hybridization orbits can accommodate all the outmost electrons and form robust sigma bonds. Over VA group, the outmost electrons seem too abundant to be utilized in hybridization orbits. Here we show a spd2 hybridization rule, accommodating all the outmost electron of halogen elements. Each atom can be connected with contiguous atom by robust sigma bond, and carries one dangling lone-unpaired electron, implying formation of pi bond is possible. One atomic iodine layer can be robustly locked by the sigma bond, forming iodiene sheet by spd2 hybridization orbits. With application of compression strain, the pi bond forms, and the band inversion occurs simultaneously at the valence band and conductance band. Dirac points (line) and topological nontrivial points (arc or hoop) suggests the transformation of Dirac semimetal or topological semimetal happens.

Published in: "arXiv Material Science".

The post Towards planar Iodine 2D crystal materials. (arXiv:1909.07604v1 [cond-mat.mtrl-sci]) appeared first on 2D Research.

Quantum anomalous Hall effect in two dimensional Janus Mn2Cl3Br3 with large magnetic anisotropy energy. (arXiv:1909.07812v1 [cond-mat.mtrl-sci])

Publications on 2D Materials - 11 hours 32 min ago

The quantum anomalous Hall (QAH) effect have been experimentally observed in magnetically-doped topological insulators. However, the QAH effect only at extremely low temperatures due to the weak magnetic coupling, small band gap and low carrier mobility. Here, based on first-principles density functional theory, we predict that the Janus Mn2Cl3Br3 is high Curie temperature ferromagnet that host the QAH phase. Furthermore, we find that it is a Dirac half-metal characterized by a Dirac cone in one spin channel with carrier mobilities comparable to freestanding germanene and an large band gap in other spin channel. Simultaneously, when the spin-orbital coupling interaction is considered, the Janus Mn2Cl3Br3 exhibit lager magnetic anisotropic energy of 11.89 meV/cell and a nontrivial band gap. More interestingly, both the Chern number sign and the chiral edge current are tuned by changing the direction of magnetization. Our finding would suggest the possibility of not only realized the QAH effect but also designed the flow direction of the edge current.

Published in: "arXiv Material Science".

The post Quantum anomalous Hall effect in two dimensional Janus Mn2Cl3Br3 with large magnetic anisotropy energy. (arXiv:1909.07812v1 [cond-mat.mtrl-sci]) appeared first on 2D Research.

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