Nature

/Nature

In-plane anisotropic and ultra-low-loss polaritons in a natural van der Waals crystal

2018-10-24T18:34:05+00:00October 24th, 2018|Categories: Publications|

In-plane anisotropic and ultra-low-loss polaritons in a natural van der Waals crystalIn-plane anisotropic and ultra-low-loss polaritons in a natural van der Waals crystal, Published online: 24 October 2018; doi:10.1038/s41586-018-0618-9Observation of the anisotropic propagation of polaritons along the surface of layered, semiconducting α-MoO3 confirms the existence of this phenomenon in natural materials.

Published in: "Nature".

The war on fake graphene

2018-10-08T14:35:51+00:00October 8th, 2018|Categories: Publications|Tags: |

The war on fake grapheneThe war on fake graphene, Published online: 08 October 2018; doi:10.1038/d41586-018-06939-4The material graphene has a vast number of potential applications — but a survey of commercially available graphene samples reveals that research could be undermined by the poor quality of the available material.

Published in: "Nature".

Solution-processable 2D semiconductors for high-performance large-area electronics

2018-10-03T18:34:14+00:00October 3rd, 2018|Categories: Publications|Tags: |

Solution-processable 2D semiconductors for high-performance large-area electronicsSolution-processable 2D semiconductors for high-performance large-area electronics, Published online: 03 October 2018; doi:10.1038/s41586-018-0574-4By intercalating large ammonium molecules to exfoliate MoS2 with preservation of the 2H-phase, highly uniform solutionprocessable 2D semiconductor nanosheets are obtained for the scalable fabrication of large-area thin-film electronics.

Published in: "Nature".

Subcycle observation of lightwave-driven Dirac currents in a topological surface band

2018-09-26T18:34:32+00:00September 26th, 2018|Categories: Publications|

Subcycle observation of lightwave-driven Dirac currents in a topological surface bandSubcycle observation of lightwave-driven Dirac currents in a topological surface band, Published online: 26 September 2018; doi:10.1038/s41586-018-0544-xTime- and angle-resolved photoemission spectroscopy reveals how Dirac fermions in the band structure of the topological surface state of Bi2Te3 are accelerated by the carrier wave of a terahertz-frequency light pulse.

Published in: "Nature".

Extremely efficient terahertz high-harmonic generation in graphene by hot Dirac fermions

2018-09-10T16:34:30+00:00September 10th, 2018|Categories: Publications|Tags: |

Extremely efficient terahertz high-harmonic generation in graphene by hot Dirac fermionsExtremely efficient terahertz high-harmonic generation in graphene by hot Dirac fermions, Published online: 10 September 2018; doi:10.1038/s41586-018-0508-1Efficient terahertz harmonic generation—challenging but important for ultrahigh-speed optoelectronic technologies—is demonstrated in graphene through a nonlinear process that could potentially be generalized to other materials.

Published in: "Nature".

How to make graphene ‘snow’ in a microwave

2018-08-30T16:35:30+00:00August 30th, 2018|Categories: Publications|Tags: |

How to make graphene ‘snow’ in a microwaveHow to make graphene ‘snow’ in a microwave, Published online: 30 August 2018; doi:10.1038/d41586-018-06103-yA simple method produces a high yield of graphene, which is difficult to manufacture in bulk.

Published in: "Nature".

Engineering of robust topological quantum phases in graphene nanoribbons

2018-08-08T18:33:54+00:00August 8th, 2018|Categories: Publications|Tags: |

Engineering of robust topological quantum phases in graphene nanoribbonsEngineering of robust topological quantum phases in graphene nanoribbons, Published online: 08 August 2018; doi:10.1038/s41586-018-0375-9Graphene nanoribbons are used to design robust nanomaterials with controlled periodic coupling of topological boundary states to create quasi-one-dimensional trivial and non-trivial electronic quantum phases.

Published in: "Nature".

Topological states engineered in narrow strips of graphene

2018-08-08T18:33:52+00:00August 8th, 2018|Categories: Publications|Tags: |

Topological states engineered in narrow strips of grapheneTopological states engineered in narrow strips of graphene, Published online: 08 August 2018; doi:10.1038/d41586-018-05851-1In materials known as graphene nanoribbons, topological states can be precisely engineered and probed, providing an experimental platform for studying electronic topology.

Published in: "Nature".

Topological band engineering of graphene nanoribbons

2018-08-08T18:33:51+00:00August 8th, 2018|Categories: Publications|Tags: |

Topological band engineering of graphene nanoribbonsTopological band engineering of graphene nanoribbons, Published online: 08 August 2018; doi:10.1038/s41586-018-0376-8A topologically engineered graphene nanoribbon superlattice is presented that hosts a one-dimensional array of half-filled, in-gap localized electronic states, enabling band engineering.

Published in: "Nature".

Ferroelectric switching of a two-dimensional metal

2018-07-23T16:34:27+00:00July 23rd, 2018|Categories: Publications|Tags: |

Ferroelectric switching of a two-dimensional metalFerroelectric switching of a two-dimensional metal, Published online: 23 July 2018; doi:10.1038/s41586-018-0336-3Two- and three-layer WTe2 exhibits spontaneous out-of-plane electric polarization that can be switched electrically at room temperature and is sufficiently robust for use in applications with other two-dimensional materials.

Published in: "Nature".

Electron ptychography of 2D materials to deep sub-ångström resolution

2018-07-18T18:34:57+00:00July 18th, 2018|Categories: Publications|

Electron ptychography of 2D materials to deep sub-ångström resolutionElectron ptychography of 2D materials to deep sub-ångström resolution, Published online: 18 July 2018; doi:10.1038/s41586-018-0298-5Combining an electron microscope pixel-array detector that collects the entire distribution of scattered electrons with full-field ptychography greatly improves image resolution and contrast compared to traditional techniques, even at low beam energies.

Published in: "Nature".

Electrically controlled water permeation through graphene oxide membranes

2018-07-11T18:34:25+00:00July 11th, 2018|Categories: Publications|Tags: , |

Electrically controlled water permeation through graphene oxide membranesElectrically controlled water permeation through graphene oxide membranes, Published online: 11 July 2018; doi:10.1038/s41586-018-0292-yThe rapid water transport through graphene oxide membranes can be switched off by introducing localized electric fields within the membranes that ionize surrounding water molecules and thus block transport.

Published in: "Nature".

Publisher Correction: Magnetic edge states and coherent manipulation of graphene nanoribbons

2018-06-26T18:34:45+00:00June 26th, 2018|Categories: Publications|Tags: |

Publisher Correction: Magnetic edge states and coherent manipulation of graphene nanoribbonsPublisher Correction: Magnetic edge states and coherent manipulation of graphene nanoribbons, Published online: 26 June 2018; doi:10.1038/s41586-018-0297-6Publisher Correction: Magnetic edge states and coherent manipulation of graphene nanoribbons

Published in: "Nature".

Gate-tunable frequency combs in graphene–nitride microresonators

2018-06-11T16:34:24+00:00June 11th, 2018|Categories: Publications|Tags: |

Gate-tunable frequency combs in graphene–nitride microresonatorsGate-tunable frequency combs in graphene–nitride microresonators, Published online: 11 June 2018; doi:10.1038/s41586-018-0216-xCoupling graphene sheets with a silicon nitride ring microresonator allows the nonlinear cavity dynamics to be altered by a gate voltage, resulting in tunable, chip-scale, optical frequency combs.

Published in: "Nature".

China launches first part of ambitious mission to Moon’s far side

2018-05-21T16:32:55+00:00May 21st, 2018|Categories: Publications|

China launches first part of ambitious mission to Moon’s far sideChina launches first part of ambitious mission to Moon’s far side, Published online: 21 May 2018; doi:10.1038/d41586-018-05231-9Two radio-astronomy experiments piggybacked on launch of Queqiao probe, which will act as a data-relay station for Chang’e-4 moon lander.

Published in: "Nature".

Lightwave valleytronics in a monolayer of tungsten diselenide

2018-05-02T18:31:35+00:00May 2nd, 2018|Categories: Publications|Tags: |

Lightwave valleytronics in a monolayer of tungsten diselenideLightwave valleytronics in a monolayer of tungsten diselenide, Published online: 02 May 2018; doi:10.1038/s41586-018-0013-6A strong lightwave in a monolayer of tungsten diselenide drives changes in the valley pseudospin, making valley pseudospin an information carrier that is switchable faster than a single light cycle.

Published in: "Nature".

Space pioneer

2018-04-18T08:31:50+00:00April 18th, 2018|Categories: Publications|

Space pioneerSpace pioneer, Published online: 18 April 2018; doi:10.1038/d41586-018-04603-5Meteorologist Insa Thiele-Eich is training to become Germany’s first female astronaut.

Published in: "Nature".

Mirrors made of a single atomic layer

2018-04-09T12:31:54+00:00April 9th, 2018|Categories: Publications|

Mirrors made of a single atomic layerMirrors made of a single atomic layer, Published online: 09 April 2018; doi:10.1038/d41586-018-04089-1Researchers have demonstrated that atomically thin materials can be highly reflective, contrary to general thinking. This finding could have technological implications for nanophotonics, optoelectronics and quantum optics.

Published in: "Nature".

Massive Dirac fermions in a ferromagnetic kagome metal

2018-03-19T16:34:41+00:00March 19th, 2018|Categories: Publications|

Massive Dirac fermions in a ferromagnetic kagome metalMassive Dirac fermions in a ferromagnetic kagome metal, Published online: 19 March 2018; doi:10.1038/nature25987Fe3Sn2 hosts massive Dirac fermions, owing to the underlying symmetry properties of the bilayer kagome lattice in the ferromagnetic state and the atomic spin–orbit coupling.

Published in: "Nature".

Monolayer atomic crystal molecular superlattices

2018-03-07T18:31:44+00:00March 7th, 2018|Categories: Publications|Tags: , , , |

Monolayer atomic crystal molecular superlatticesMonolayer atomic crystal molecular superlattices, Published online: 07 March 2018; doi:10.1038/nature25774This paper reports the formation of superlattices of two-dimensional materials with layers of quaternary ammonium molecules introduced between the two-dimensional (2D) crystals via electrochemical intercalation. The team created a range of superlattices using different molecules that varied in size and symmetry and different two-dimensional crystals such as tungsten diselenide and molybdenum disulfide. Intercalation decoupled the 2D interlayer interactions, whereas varying the molecules adjusted the electronic and optical properties of the 2D layers. Importantly, the approach allowed the stable isolation of phosphorene monolayers (albeit within a superlattice), which has previously been challenging to achieve. They authors showed that field-effect transistor devices made with the phosphorene superlattices performed competitively compared to recently reported phosphorene-based devices.

Published in: "Nature".

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