Graphene articles within Nature Communications

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  • Article
    | Open Access

    Shaping and guiding the flow of ballistic electrons is at the core of electron optics; however in graphene this is hindered by chiral tunneling. Here, the authors experimentally demonstrate an electron collimator based on hBN-encapsulated ballistic graphene, capable of emitting narrow electron beams.

    • Arthur W. Barnard
    • , Alex Hughes
    •  & David Goldhaber-Gordon

  • Article
    | Open Access

    Saturable absorption, a technologically relevant property of graphene, is usually explained with Pauli blocking of optically driven carriers in the strong-excitation regime. Here, Winzeret al. reveal a new saturation regime at low excitations, resulting in a double-bended saturation behaviour.

    • Torben Winzer
    • , Martin Mittendorff
    •  & Andreas Knorr

  • Article
    | Open Access

    Raman spectroscopy is a versatile tool to gain insight into the functionalization of graphene-based materials, yet unequivocal assignment of the vibrational modes associated with covalent binding has so far remained elusive. Here, the authors succeed in an experimental and theoretical identification of this molecular fingerprint.

    • Philipp Vecera
    • , Julio C. Chacón-Torres
    •  & Andreas Hirsch

  • Article
    | Open Access

    Organic functionalization is key to the development of graphene-based functional composites, yet selective covalent functionalization is hindered by graphene chemical inertness. Here, the authors demonstrate a versatile route to graphene covalent bonding with amino-terminated organic molecules.

    • Rebeca A. Bueno
    • , José I. Martínez
    •  & José A. Martín-Gago

  • Article
    | Open Access

    Macroscopic magneto-transport measurements enable investigation of the transport properties of materials in the presence of magnetic fields, yet they do not allow access to atomic scale details. Here, the authors combine scanning tunneling potentiometry with magnetic fields to demonstrate nanoscale magneto-transport.

    • Philip Willke
    • , Thomas Kotzott
    •  & Martin Wenderoth

  • Article
    | Open Access

    Ruthenium is the cheapest platinum-group metal, yet active hydrogen evolution catalysts with low amounts of ruthenium have yet to be designed. Here, the authors report the preparation of a ruthenium–cobalt nanoalloy and demonstrate its potential as an effective hydrogen evolution catalyst in basic media.

    • Jianwei Su
    • , Yang Yang
    •  & Qianwang Chen

  • Article
    | Open Access

    Aerographite is a highly porous and lightweight carbon material obtained from hollow tubular tetrapod building units. Here, the authors present a comprehensive investigation of tetrapod deformation mechanisms which are at the core of aerographite nanomechanical properties.

    • Raimonds Meija
    • , Stefano Signetti
    •  & Nicola M. Pugno

  • Article
    | Open Access

    Two-dimensional materials are receiving increasing interest as they could pave the way to a paradigm shift in nano-electronics. Here, the authors demonstrate a 1-bit implementation of a microprocessor consisting of 115 transistors, using atomically thin MoS2.

    • Stefan Wachter
    • , Dmitry K. Polyushkin
    •  & Thomas Mueller

  • Article
    | Open Access

    Graphene nanoribbons consist of carbon atoms arranged in a hexagonal lattice. Despite non-hexagonal rings generally being more unstable, the authors demonstrate the successful synthesis of graphene-like nanoribbons with periodically embedded four- and eight-membered carbon rings, with tailored electronic properties.

    • Meizhuang Liu
    • , Mengxi Liu
    •  & Dingyong Zhong

  • Article
    | Open Access

    Electronic skins and health monitoring devices rely on integrated tactile sensors, which often require tailored degrees of sensitivity in specific pressure ranges. Here, the authors fabricate a versatile matrix array of pressure-sensitive graphene transistors operating in the wide 250 Pa to 3 MPa pressure range.

    • Sung-Ho Shin
    • , Sangyoon Ji
    •  & Jang-Ung Park

  • Article
    | Open Access

    Recently, fabrication processes have realised three-dimensional nanoporous graphene. Here, the authors reveal two-dimensional Dirac plasmons in three-dimensional nanoporous graphene disclosing strong plasmonic absorptions tunable from terahertz to mid-infrared via controllable doping level and porosity.

    • Fausto D’Apuzzo
    • , Alba R. Piacenti
    •  & Stefano Lupi

  • Article
    | Open Access

    The Casimir force is a ubiquitous interaction arising from electromagnetic quantum fluctuations. Here, the authors uncover the underlying physics governing Casimir force phase transitions in staggered 2D materials in the graphene family.

    • Pablo Rodriguez-Lopez
    • , Wilton J. M. Kort-Kamp
    •  & Lilia M. Woods

  • Article
    | Open Access

    A key step in the on-surface synthesis of graphene nanoribbons is thermal annealing of polymer precursors on a metal substrate. Here, Maet al. decouple the cyclodehydrogenation reaction from the catalytic metal substrate and grow graphene nanoribbons by injecting charges at molecular sites.

    • Chuanxu Ma
    • , Zhongcan Xiao
    •  & An-Ping Li

  • Article
    | Open Access

    Graphene nanoribbons are promising candidates for 2D material electrical interconnects; however, the top-down fabrication of nanoribbons has remained a challenge. Here, Chenet al. have used a hexagonal boron nitride template to grow narrow, integrated graphene nanoribbons with small bandgaps.

    • Lingxiu Chen
    • , Li He
    •  & Mianheng Jiang

  • Article
    | Open Access

    Time reversal symmetry breaking gives rise to magnetic circular dichroism and Faraday rotation in graphene. The authors use terahertz magneto-electro-optical spectroscopy to demonstrate that electrostatic doping at a fixed magnetic field allows inversion of magnetic circular dichroism and Faraday rotation.

    • Jean-Marie Poumirol
    • , Peter Q. Liu
    •  & Alexey B. Kuzmenko

  • Article
    | Open Access

    Ultraclean and damage-free transfer of graphene over large areas is crucial for the future development of flexible electronics and optoelectronics. Using a rosin-assisted method, the authors transfer graphene with an ultraclean surface and uniform small sheet resistance—a 4-inch monolithic organic light-emitting diode is demonstrated.

    • Zhikun Zhang
    • , Jinhong Du
    •  & Wencai Ren

  • Article
    | Open Access

    Electron relaxation, which is the dominant release channel of electronic heat in nanostructures, occurs with characteristic times of several picoseconds. Here, the authors predict that an ultrafast (femtosecond) radiative cooling regime takes place in plasmonically active neighboring graphene nanodisks prior to electron relaxation.

    • Renwen Yu
    • , Alejandro Manjavacas
    •  & F. Javier García de Abajo

  • Article
    | Open Access

    High-harmonic generation is a nonlinear optical phenomenon that may be harnessed towards realisation of ultrafast light sources. Here, the authors theoretically show that localized plasmons in graphene nanodisks result in broadband and electrically tunable high-harmonic generation.

    • Joel D. Cox
    • , Andrea Marini
    •  & F. Javier García de Abajo

  • Article
    | Open Access

    Developing room-temperature magnets from materials containing onlysporbitals has remained an elusive but important goal. Here, Zbořil and co-workers report hydroxofluorographenes that exhibit room-temperature antiferromagnetic ordering and low-temperature ferromagnetic behaviour with high magnetic moments.

    • Jiří Tuček
    • , Kateřina Holá
    •  & Radek Zbořil

  • Article
    | Open Access

    The absence of a bandgap in the electronic spectrum of graphene can be overcome by breaking its lattice symmetry. The authors show that the insulating state of gapped graphene is electrically shorted by narrow edge channels exhibiting high conductivity.

    • M. J. Zhu
    • , A. V. Kretinin
    •  & M. Ben Shalom

  • Article
    | Open Access

    Graphene, and other 2D materials, do not exist as strictly planar sheets but instead have topographic ripples on the sub-nanometre scale. Here, Latychevskaiaet al. present a method to non-invasively image ripples in 2D materials with a single-shot, wide-area, electron diffraction measurement.

    • Tatiana Latychevskaia
    • , Wei-Hao Hsu
    •  & Ing-Shouh Hwang

  • Article
    | Open Access

    Micro- and nanostructures found in nature can be adopted to new uses and materials in engineered composites. Here authors demonstrate large enhancements in toughness and electrical conductivity in a ceramic upon addition of graphene at low (1 volume %) levels.

    • Olivier T. Picot
    • , Victoria G. Rocha
    •  & Eduardo Saiz

  • Article
    | Open Access

    There is emerging interest in photodetectors in the mid-infrared driven by increasing need to monitor the environment for security and healthcare purposes. Sassiet al. show a thermal photodetector, based on the coupling between graphene and a pyroelectric crystal, which shows high temperature sensitivity.

    • U. Sassi
    • , R. Parret
    •  & A. Colli

  • Article
    | Open Access

    Light-matter interaction in atomically thin transition metal dichalcogenides is dominated by excitonic effects and hot-carrier relaxation/extraction mechanisms. Here, the authors report that the C exciton in two-dimensional MoS2exhibits a slower hot-carrier cooling than band-edge excitons.

    • Lei Wang
    • , Zhuo Wang
    •  & Hong-Bo Sun

  • Article
    | Open Access

    The development of materials for energy storage hinges on the design of electrodes with large capacity, flexibility, fast charge–discharge rate and long cycling lifetime. Here, the authors develop electrodes based on nitrogen doped graphene with encapsulated Ge quantum dots with yolk-shell architecture.

    • Runwei Mo
    • , David Rooney
    •  & Hui Ying Yang

  • Article
    | Open Access

    Electron-electron interactions in many-body systems may manifest themselves through the fractional quantum Hall effect. Here, the authors perform transport measurements in bilayer graphene, and observe particle-hole symmetric fractional quantum Hall states in theN=2 Landau level.

    • Georgi Diankov
    • , Chi-Te Liang
    •  & David Goldhaber-Gordon

  • Article
    | Open Access

    Graphene has so far demonstrated remarkable properties, making it increasingly interesting for ultrafast electronic applications. Here, the authors show that, when probed by a highly charged ion, freestanding graphene is able to provide dozens of electrons for ion neutralization within a few femtoseconds.

    • Elisabeth Gruber
    • , Richard A. Wilhelm
    •  & Friedrich Aumayr

  • Article
    | Open Access

    Detection of electric fields, central to chemical and biological processes, has been limited to measurements of current (e.g., electrodes) and secondary reporters (e.g., fluorescent dyes). Here, the authors demonstrate an optical platform capable of imaging electric field dynamics with high spatio-temporal resolution.

    • Jason Horng
    • , Halleh B. Balch
    •  & Feng Wang

  • Article
    | Open Access

    The performance of graphene field effect transistors is adversely affected by fluctuations in the electrical resistance at the graphene/metal interface. Here, the authors unveil the microscopic origin of such contact noise, highlighting the role of current crowding.

    • Paritosh Karnatak
    • , T. Phanindra Sai
    •  & Arindam Ghosh

  • Article
    | Open Access

    Carbon-based fibres are at the core of electrically conductive multifunctional fabrics, yet improving the weak interaction between fibres remains a challenge. Here, the authors demonstrate an assembly method where graphene fibres are fused at junctions with record specific electrical and thermal conductivity.

    • Zheng Li
    • , Zhen Xu
    •  & Chao Gao

  • Article
    | Open Access

    Van der Waals heterostructures can be combined with metallic nanostructures to enable enhanced light–matter interaction. Here, the authors fabricate a broadband mechanical electro-optical modulator using a graphene/hexagonal boron nitride vertical heterojunction, suspended over a gold nanostripe array.

    • P. A. Thomas
    • , O. P. Marshall
    •  & A. N. Grigorenko

  • Article
    | Open Access

    High-mobility graphene can play host to exciton polaritons—hybrid matter–light particles, which can form into a state known as a quantum Hall polariton fluid. Here, the authors show that electron–electron interactions can act to destabilize this state and lead to the formation of a modulated phase.

    • Francesco M. D. Pellegrino
    • , Vittorio Giovannetti
    •  & Marco Polini

  • Article
    | Open Access

    By forming heterostructures of different layered two-dimensional materials, functional spintronic devices may be built by exploiting the materials’ different spin-orbit coupling and spin transport properties. Here, the authors demonstrate a spin switch in a gated structure of graphene and MoS2.

    • Wenjing Yan
    • , Oihana Txoperena
    •  & Fèlix Casanova

  • Article
    | Open Access

    The wettability properties of graphene hold promise for the realisation of flow control devices. Here, the authors demonstrate that the degree of water penetration through a nickel mesh coated with graphene can be controlled electrically, enabling dynamic locomotion of water droplets.

    • Rassoul Tabassian
    • , Jung-Hwan Oh
    •  & Il-Kwon Oh

  • Article
    | Open Access

    Van der Waals heterostructures enable fabrication of materials with engineered functionalities. Here, the authors demonstrate precise control over the interaction between layers by application of pressure with a scanning tunnelling microscopy tip.

    • Matthew Yankowitz
    • , K. Watanabe
    •  & Brian J. LeRoy

  • Article
    | Open Access

    Two-dimensional materials show remarkable lubrication properties, yet chemical modifications may hinder such capabilities. Here, the authors show that when graphene is aligned on a Ge(111) substrate, ultra-low friction can be preserved even after graphene fluorination or oxidation.

    • Xiaohu Zheng
    • , Lei Gao
    •  & Xi Wang

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