Nature Communications

/Nature Communications

Scalable high performance radio frequency electronics based on large domain bilayer MoS<sub>2</sub>

2018-11-14T10:35:43+00:00November 14th, 2018|Categories: Publications|Tags: |

Scalable high performance radio frequency electronics based on large domain bilayer MoS2Scalable high performance radio frequency electronics based on large domain bilayer MoS<sub>2</sub>, Published online: 14 November 2018; doi:10.1038/s41467-018-07135-8Large area two-dimensional materials show promise for applications in DC and RF flexible electronics. Here, the authors report RF transistors based on chemical vapor deposited bilayer MoS2 with 23 GHz extrinsic maximum oscillation frequency, and gigahertz mixers on flexible polyimide substrates.

Published in: "Nature Communications".

Dehydrative π-extension to nanographenes with zig-zag edges

2018-11-12T10:34:30+00:00November 12th, 2018|Categories: Publications|

Dehydrative π-extension to nanographenes with zig-zag edgesDehydrative π-extension to nanographenes with zig-zag edges, Published online: 12 November 2018; doi:10.1038/s41467-018-07095-zNanographenes with zig-zag peripheries are expected to have unique electronic properties, but their application in organic electronics has been curbed by their difficult synthesis. Here, the authors develop a facile route to zig-zag nanographenes based on a key dehydrative π-extension reaction.

Published in: "Nature Communications".

Magnetic field compatible circuit quantum electrodynamics with graphene Josephson junctions

2018-11-05T10:36:14+00:00November 5th, 2018|Categories: Publications|Tags: |

Magnetic field compatible circuit quantum electrodynamics with graphene Josephson junctionsMagnetic field compatible circuit quantum electrodynamics with graphene Josephson junctions, Published online: 05 November 2018; doi:10.1038/s41467-018-07124-xA transmon qubit insensitive to magnetic fields is a crucial element in topological quantum computing. Here, Kroll et al. create graphene transmons by integrating monolayer graphene Josephson junctions into microwave frequency superconducting circuits, allowing them to operate in a parallel magnetic field of 1 T.

Published in: "Nature Communications".

Narrow bandgap oxide nanoparticles coupled with graphene for high performance mid-infrared photodetection

2018-10-16T10:40:26+00:00October 16th, 2018|Categories: Publications|Tags: |

Narrow bandgap oxide nanoparticles coupled with graphene for high performance mid-infrared photodetectionNarrow bandgap oxide nanoparticles coupled with graphene for high performance mid-infrared photodetection, Published online: 16 October 2018; doi:10.1038/s41467-018-06776-zCoupling graphene with narrow band-gap Ti2O3 nanoparticles can enable efficient mid-infrared photodetection. Here, the authors report a graphene-Ti2O3 based hybrid photodetector with high responsivity of ~300 A W-1 up to 10 μm by varying the number of graphene layers and size of Ti2O3 nanoparticles.

Published in: "Nature Communications".

Stabilizing black phosphorus nanosheets via edge-selective bonding of sacrificial C<sub>60</sub> molecules

2018-10-09T10:34:04+00:00October 9th, 2018|Categories: Publications|Tags: |

Stabilizing black phosphorus nanosheets via edge-selective bonding of sacrificial C60 moleculesStabilizing black phosphorus nanosheets via edge-selective bonding of sacrificial C<sub>60</sub> molecules, Published online: 09 October 2018; doi:10.1038/s41467-018-06437-1Few-layered black phosphorus has unique and appealing electronic properties but is easily oxidized in air. Here, the authors covalently functionalize black phosphorus nanosheets with C60 at their edges, providing improved stability and enhanced photoelectrochemical and photocatalytic activities.

Published in: "Nature Communications".

Graphene-enabled and directed nanomaterial placement from solution for large-scale device integration

2018-10-05T10:33:23+00:00October 5th, 2018|Categories: Publications|Tags: |

Graphene-enabled and directed nanomaterial placement from solution for large-scale device integrationGraphene-enabled and directed nanomaterial placement from solution for large-scale device integration, Published online: 05 October 2018; doi:10.1038/s41467-018-06604-4The placement of nanomaterials at predefined locations is a key requirement for their integration in nanoelectronic devices. Here, the authors devise a method allowing placement of solution-based nanomaterials by using structured graphene layers as deposition sites with the aid of an electric field.

Published in: "Nature Communications".

A ballistic graphene superconducting microwave circuit

2018-10-04T10:33:26+00:00October 4th, 2018|Categories: Publications|Tags: |

A ballistic graphene superconducting microwave circuitA ballistic graphene superconducting microwave circuit, Published online: 04 October 2018; doi:10.1038/s41467-018-06595-2Encapsulated graphene Josephson junctions are promising for microwave quantum circuits but so far haven’t been explored. Here, Schmidt and Jenkins et al. observe a gate-tunable Josephson inductance in a microwave circuit based on a ballistic graphene Josephson junction embedded in a superconducting cavity.

Published in: "Nature Communications".

Observation of Coulomb gap in the quantum spin Hall candidate single-layer 1<i>T</i>’-WTe<sub>2</sub>

2018-10-04T10:33:25+00:00October 4th, 2018|Categories: Publications|Tags: |

Observation of Coulomb gap in the quantum spin Hall candidate single-layer 1T’-WTe2Observation of Coulomb gap in the quantum spin Hall candidate single-layer 1<i>T</i>’-WTe<sub>2</sub>, Published online: 04 October 2018; doi:10.1038/s41467-018-06635-xThe conductance from bulk bands in a topological insulator usually blurs effects arising from edge states. Here, Song et al. report a Coulomb gap opened by electron–electron interactions, which effectively suppress the bulk conductance and promote observation of topological edge states in the single-layer 1T’-WTe2.

Published in: "Nature Communications".

Twist angle-dependent conductivities across MoS<sub>2</sub>/graphene heterojunctions

2018-10-04T10:33:24+00:00October 4th, 2018|Categories: Publications|Tags: , |

Twist angle-dependent conductivities across MoS2/graphene heterojunctionsTwist angle-dependent conductivities across MoS<sub>2</sub>/graphene heterojunctions, Published online: 04 October 2018; doi:10.1038/s41467-018-06555-wTwisting vertically stacked individual layers of two-dimensional materials can trigger exciting fundamental physics and advanced electronic device applications. Here, the authors report five times enhancement in vertical heterojunction conductivity on rotating MoS2 over graphene.

Published in: "Nature Communications".

Observing of the super-Planckian near-field thermal radiation between graphene sheets

2018-10-02T10:33:43+00:00October 2nd, 2018|Categories: Publications|Tags: |

Observing of the super-Planckian near-field thermal radiation between graphene sheetsObserving of the super-Planckian near-field thermal radiation between graphene sheets, Published online: 02 October 2018; doi:10.1038/s41467-018-06163-8Though monolayer graphene has the potential to be used in near-field thermal management applications, no experimental verification has been provided to date. Here, the authors directly measure plasmon-enhanced near-field heat transfer between graphene sheets on intrinsic silicon substrates.

Published in: "Nature Communications".

Atomically precise graphene etch stops for three dimensional integrated systems from two dimensional material heterostructures

2018-09-28T10:34:25+00:00September 28th, 2018|Categories: Publications|Tags: , |

Atomically precise graphene etch stops for three dimensional integrated systems from two dimensional material heterostructuresAtomically precise graphene etch stops for three dimensional integrated systems from two dimensional material heterostructures, Published online: 28 September 2018; doi:10.1038/s41467-018-06524-3Fabrication methods to pattern thin materials are a critical tool to build molecular scale devices. Here the authors report a selective etching method using XeF2 gas to pattern graphene based heterostructures with multiple active layers and achieve 1D contacts with low contact resistivity of 80 Ω·µm

Published in: "Nature Communications".

Uniform doping of graphene close to the Dirac point by polymer-assisted assembly of molecular dopants

2018-09-27T10:34:21+00:00September 27th, 2018|Categories: Publications|Tags: |

Uniform doping of graphene close to the Dirac point by polymer-assisted assembly of molecular dopantsUniform doping of graphene close to the Dirac point by polymer-assisted assembly of molecular dopants, Published online: 27 September 2018; doi:10.1038/s41467-018-06352-5Incorporating dopants in the graphene lattice to tune its electronic properties is a challenging task. Here, the authors report a strategy to dope epitaxial large-area graphene on SiC by means of spin-coating deposition of F4TCNQ polymers in ambient conditions.

Published in: "Nature Communications".

Zigzag carbon as efficient and stable oxygen reduction electrocatalyst for proton exchange membrane fuel cells

2018-09-19T10:33:52+00:00September 19th, 2018|Categories: Publications|Tags: , , |

Zigzag carbon as efficient and stable oxygen reduction electrocatalyst for proton exchange membrane fuel cellsZigzag carbon as efficient and stable oxygen reduction electrocatalyst for proton exchange membrane fuel cells, Published online: 19 September 2018; doi:10.1038/s41467-018-06279-xCost and stability of catalysts hinder widespread use of proton exchange membrane fuel cells. Here the authors synthesize zigzag-edged graphene nanoribbons for electrocatalysis of oxygen reduction. Employment of such a metal-free catalyst in a fuel cell yields remarkable power density and durability.

Published in: "Nature Communications".

Boosting potassium-ion batteries by few-layered composite anodes prepared via solution-triggered one-step shear exfoliation

2018-09-07T10:34:48+00:00September 7th, 2018|Categories: Publications|

Boosting potassium-ion batteries by few-layered composite anodes prepared via solution-triggered one-step shear exfoliationBoosting potassium-ion batteries by few-layered composite anodes prepared via solution-triggered one-step shear exfoliation, Published online: 07 September 2018; doi:10.1038/s41467-018-05786-1Developing high-performance potassium-ion batteries remains a challenge. Here, the authors show that few-layered Sb2S3/carbon composite anode synthesized via simple exfoliation minimizes the volume changes during (de)intercalation of K+ ions with boosted rate performance and cyclability.

Published in: "Nature Communications".

Realization of vertical metal semiconductor heterostructures via solution phase epitaxy

2018-09-06T10:35:00+00:00September 6th, 2018|Categories: Publications|Tags: , |

Realization of vertical metal semiconductor heterostructures via solution phase epitaxyRealization of vertical metal semiconductor heterostructures via solution phase epitaxy, Published online: 06 September 2018; doi:10.1038/s41467-018-06053-zControlling the composition and crystal phase of layered heterostructures is important. Here, the authors report the liquid-phase epitaxial growth of Sn0.5W0.5S2 nanosheets with 83% metallic phase on SnS2 nanoplates, which are used as 100 ppb level chemiresistive gas sensors at room temperature.

Published in: "Nature Communications".

Anomalous twin boundaries in two dimensional materials

2018-09-05T10:35:28+00:00September 5th, 2018|Categories: Publications|Tags: |

Anomalous twin boundaries in two dimensional materialsAnomalous twin boundaries in two dimensional materials, Published online: 05 September 2018; doi:10.1038/s41467-018-06074-8All materials subjected to mechanical deformation form low energy interfaces known as twin boundaries. Here, the authors investigate a variety of structural features that form upon bending atomically thin 2D-crystals, and predict distinct classes of post deformation microstructure based on their atomic arrangement, bend angle and flake thickness.

Published in: "Nature Communications".

Finite momentum Cooper pairing in three-dimensional topological insulator Josephson junctions

2018-08-28T10:36:19+00:00August 28th, 2018|Categories: Publications|Tags: |

Finite momentum Cooper pairing in three-dimensional topological insulator Josephson junctionsFinite momentum Cooper pairing in three-dimensional topological insulator Josephson junctions, Published online: 28 August 2018; doi:10.1038/s41467-018-05993-wUnconventional superconductivity may emerge from the interplay between strong spin–orbit coupling and magnetism. Here, Chen et al. report an anomalous Fraunhofer pattern in three-dimensional topological insulator Bi2Se3 and attribute it as a signature of finite momentum Cooper pairing.

Published in: "Nature Communications".

Selectively nitrogen-doped carbon materials as superior metal-free catalysts for oxygen reduction

2018-08-23T10:35:07+00:00August 23rd, 2018|Categories: Publications|

Selectively nitrogen-doped carbon materials as superior metal-free catalysts for oxygen reductionSelectively nitrogen-doped carbon materials as superior metal-free catalysts for oxygen reduction, Published online: 23 August 2018; doi:10.1038/s41467-018-05878-yDoping carbon-based materials with nitrogen is effective for enhancing catalytic activity for oxygen reduction; however, directing nitrogen dopants to specific locations is difficult. Here the authors employ hydrogen-substituted graphdiyne as a matrix for nitrogen doping, leading to enhanced performance.

Published in: "Nature Communications".

Symmetry regimes for circular photocurrents in monolayer MoSe<sub>2</sub>

2018-08-21T10:35:47+00:00August 21st, 2018|Categories: Publications|Tags: |

Symmetry regimes for circular photocurrents in monolayer MoSe2Symmetry regimes for circular photocurrents in monolayer MoSe<sub>2</sub>, Published online: 21 August 2018; doi:10.1038/s41467-018-05734-zCircular photocurrents emerge in atomically thin transition metal dichalcogenides as a result of circular photogalvanic and photon drag effects. Here, the authors identify two different circular photocurrent contributions in monolater MoSe2, dominant at different voltages and with different dependence on illumination wavelength and incidence angles.

Published in: "Nature Communications".

Optical control of polarization in ferroelectric heterostructures

2018-08-21T10:35:44+00:00August 21st, 2018|Categories: Publications|Tags: , |

Optical control of polarization in ferroelectric heterostructuresOptical control of polarization in ferroelectric heterostructures, Published online: 21 August 2018; doi:10.1038/s41467-018-05640-4Controlling the polarization state in ferroeletric materials is a prerequisite for their application. Here an approach is presented to optically manipulate the polarization of ferroelectric BaTiO3 by exploiting photogenerated carriers at the interface with a two-dimensional semiconducting MoS2 film.

Published in: "Nature Communications".

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