Graphene articles within Nature Communications

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  • Article
    | Open Access

    The development of a quantitative and predictive theory of quantum light-matter interactions in ultrathin materials is both a conceptual and computational challenge. Here, the authors develop such a framework by combining density functional theory with macroscopic quantum electrodynamics, and use it to quantify the Purcell effect in van der Waals heterostructures.

    • Mark Kamper Svendsen
    • , Yaniv Kurman
    •  & Kristian S. Thygesen

  • Article
    | Open Access

    Here, the authors report optoelectronic mixing up to 67 GHz using high-frequency back-gated graphene field effect transistors (GFETs). These devices mix an electrical signal injected into the GFET gate and a modulated optical signal onto a single layer graphene channel.

    • A. Montanaro
    • , W. Wei
    •  & E. Pallecchi

  • Article
    | Open Access

    Twisted double bilayer graphene hosts flat bands that can be tuned with an electric field. Here, by using gate-tuned scanning tunneling spectroscopy, the authors demonstrate the tunability of the flat band and reveal spectral signatures of correlated electron states and the topological nature of the flat band.

    • Xiaomeng Liu
    • , Cheng-Li Chiu
    •  & Ali Yazdani

  • Article
    | Open Access

    Twisted double bilayer graphene is a novel van der Waals system that hosts an electric-field-tunable correlated state at half-filling. Here the authors reveal the delocalized nature of this state by scanning tunnelling microscopy and spectroscopy, suggesting an underlying mechanism of symmetry breaking driven by non-local exchange.

    • Canxun Zhang
    • , Tiancong Zhu
    •  & Michael F. Crommie

  • Article
    | Open Access

    Transparent photodetectors based on graphene stacked vertically along the optical axis have shown promising potential for light field reconstruction. Here, the authors develop transparent photodetector arrays and implement a neural network for real-time 3D optical imaging and object tracking.

    • Dehui Zhang
    • , Zhen Xu
    •  & Theodore B. Norris

  • Article
    | Open Access

    Li-ion battery electrodes contain inactive materials, such as conducting agents and polymeric binders, which limit the energy density. Here, the authors demonstrate highly dense Ni-rich cathodes with improved volumetric capacities by coating graphene and minimizing the inactive components.

    • Chang Won Park
    • , Jung-Hun Lee
    •  & Young-Jun Kim

  • Article
    | Open Access

    Here, the authors use scanning probe photocurrent imaging to resolve nanoscale variations of the Seebeck coefficient occurring at domain walls separating micron-scale AB and BA stacking regions in twisted bilayer graphene, and observe hyperbolic enhancement of the photocurrent pattern.

    • S. S. Sunku
    • , D. Halbertal
    •  & D. N. Basov

  • Article
    | Open Access

    Here, the authors use a nanoscale probe to study the photoresponse within a single moiré unit cell of minimally twisted bilayer graphene, and observe an intricate photo-thermoelectric response attributed to the Seebeck coefficient variation at AB-BA domain boundaries.

    • Niels C. H. Hesp
    • , Iacopo Torre
    •  & Frank H. L. Koppens

  • Article
    | Open Access

    Acoustic graphene plasmons are superior to the graphene surface plasmons in field confinement and normalized propagation length, thus promising for applications. Here, the authors report near-field imaging of acoustic plasmons in high-quality CVD graphene, measure the AGP dispersion and propagation loss, and investigate their behavior in a periodic structure.

    • Sergey G. Menabde
    • , In-Ho Lee
    •  & Min Seok Jang

  • Article
    | Open Access

    Nonlinear dissipation is frequently observed in nanomechanical resonators, but its microscopic origin remains unclear. Here, nonlinear damping is found to be enhanced in graphene nanodrums close to internal resonance conditions, providing insights on the mechanisms at the basis of this phenomenon.

    • Ata Keşkekler
    • , Oriel Shoshani
    •  & Farbod Alijani

  • Article
    | Open Access

    In field-effect transistors, a semiconducting channel is indispensable for device switching. Here, the authors demonstrate semiconductor-less switching via modulation of the field emission barrier height across a graphene-hBN interface with ON/OFF ratio of 106.

    • Jun-Ho Lee
    • , Dong Hoon Shin
    •  & Hyun-Jong Chung

  • Article
    | Open Access

    Covalently 2D-patterning graphene with different chemical functionalities is an attractive way to tailor its physical and chemical properties. Here, the authors realize spatially defined 2D-hetereoarchitectures of graphene via a strategy of molecular embroidering.

    • Tao Wei
    • , Malte Kohring
    •  & Andreas Hirsch

  • Article
    | Open Access

    Vertically stacked graphene oxide sheets are promising structures for molecular sieving technologies. By folding large planar sheets in an accordion-like manner, Liu et al. fabricate a thin robust filter with near-vertically aligned nanochannels geared towards commercial separation membranes.

    • Muchun Liu
    • , Paula J. Weston
    •  & Robert H. Hurt

  • Article
    | Open Access

    Merons are a type of topological spin texture, with relevance for both fundamental and technological problems. In this theoretical work, Augustin et al. show that the van der Waals ferromagnetic CrCl3 can host merons and anti-merons, and explore the dynamics and interactions of these quasi-particles.

    • Mathias Augustin
    • , Sarah Jenkins
    •  & Elton J. G. Santos

  • Article
    | Open Access

    Thermoelectricity due to the interplay of the nonlocal Cooper pair splitting and the elastic co-tunneling in normal metal-superconductor-normal metal structure is predicted. Here, the authors observe the non-local Seebeck effect in a graphene-based Cooper pair splitting device.

    • Z. B. Tan
    • , A. Laitinen
    •  & P. J. Hakonen

  • Article
    | Open Access

    Graphene-covering technology provides a promising approach for achieving a non-noble-metal-catalyst with corrosion protection and catalytic activity under acidic media. Here, the authors unveil that the electrochemical hydrogen evolution mechanism is governed by the proton penetration phenomenon.

    • Kailong Hu
    • , Tatsuhiko Ohto
    •  & Yoshikazu Ito

  • Article
    | Open Access

    Nanocomposite (NC) printing emerged as a major approach to translate nanomaterial properties to 3D geometries but printing of conventional NCs lacks control over nanomaterial connection. Here, the authors develop viscoelastic Pickering emulgels as NC inks through jamming nanomaterials on interfaces and in continuous phase

    • Yuanyuan Zhang
    • , Guangming Zhu
    •  & Feng Xing

  • Article
    | Open Access

    Atomically thin porous graphene is promising for filtration and sieving applications. Here the authors, using a laser-actuated micro-drum device of bilayer graphene with controlled number of nanopores, and measuring the permeation rate of different gases, show that it can also be used for permeation-based sensing.

    • I. E. Rosłoń
    • , R. J. Dolleman
    •  & P. G. Steeneken

  • Article
    | Open Access

    Spontaneous symmetry breaking of flat bands in twisted graphene systems may lead to anomalous Hall effect with a precursor state which has not been observed. Here, the authors probe this precursor state by observing bulk valley current and large nonlocal voltage several micrometers away from the charge current path in twisted double bilayer graphene.

    • Subhajit Sinha
    • , Pratap Chandra Adak
    •  & Mandar M. Deshmukh

  • Article
    | Open Access

    Here, the authors use Raman spectroscopy on circular graphene drums to demonstrate dynamical softening of optical phonons induced by the macroscopic flexural motion of graphene, and find evidence that the strain in graphene is enhanced under non-linear driving.

    • Xin Zhang
    • , Kevin Makles
    •  & Stéphane Berciaud

  • Article
    | Open Access

    Designing efficient and low power memristors-based neuromorphic systems remains a challenge. Here, the authors present graphene-based multi-level (>16) and non-volatile memristive synapses with arbitrarily programmable conductance states capable of weight assignment based on k-means clustering.

    • Thomas F. Schranghamer
    • , Aaryan Oberoi
    •  & Saptarshi Das

  • Article
    | Open Access

    Here, the authors explore the blue photoluminescence signal arising from the interface between graphene and h-BN arranged in in-plane heterostructures, and fabricate a blue light emitting device utilizing the heterojunction as the emitting layer.

    • Gwangwoo Kim
    • , Kyung Yeol Ma
    •  & Hyeon Suk Shin

  • Article
    | Open Access

    An orbital magnetic moment emerges as a result of inversion symmetry broken at the graphene/h-BN moiré superlattice. Here, Moriya et al. report thermoelectric evidence of magnetic field induced valley splitting for a van Hove singularity in this superlattice, suggesting the emergence of an orbital magnetic moment.

    • Rai Moriya
    • , Kei Kinoshita
    •  & Tomoki Machida

  • Article
    | Open Access

    A significant challenge of infrared (IR) photodetectors is to funnel light into a small nanoscale active area and efficiently convert it into an electrical signal. Here, the authors couple a plasmonic antenna to hyperbolic phonon-polaritons in hexagonal-BN to highly concentrate mid-IR light into a graphene pn-junction.

    • Sebastián Castilla
    • , Ioannis Vangelidis
    •  & Frank H. L. Koppens

  • Article
    | Open Access

    Edge conductance plays a central role in the electronic transport properties of graphitic interfaces. Here, the authors present a method to distinguish edge from bulk transport in twisted graphitic junctions and show that their relative contribution depends on the stacking configuration and the potential drop across the interface.

    • Debopriya Dutta
    • , Annabelle Oz
    •  & Elad Koren

  • Article
    | Open Access

    Macroscopic architectures of covalent organic frameworks (COF) allow to fully exploit their chemical functionality and porosity but achieving three-dimensional hierarchical porous COF architectures remains challenging. Here, the authors present a COF/reduced graphene oxide aerogel which is synthesized by growing COF during a hydrothermal process along the surface of graphene sheets.

    • Changxia Li
    • , Jin Yang
    •  & Arne Thomas

  • Article
    | Open Access

    Molecular self-assembly provides the desired functions to substrates, but investigation and control of its dynamics is challenging for the large area over which it must be detected. Here the authors report the use of graphene field effect devices to monitor with sub-second time resolution the photoinduced supramolecular assembly of a spiropyran derivative on graphene, covering an area of 100 × 100 μm2.

    • Marco Gobbi
    • , Agostino Galanti
    •  & Paolo Samorì

  • Article
    | Open Access

    Direct visualization of moiré superlattices in van der Waals heterostructures is a needed diagnostic tool for the study of periodicity-induced electronic and optical phenomena. Here, the authors demonstrate that the moiré pattern in twisted bilayer graphene can be indirectly imaged by imaging the phonon polariton interference on the top hexagonal boron nitride encapsulation layer.

    • Yue Luo
    • , Rebecca Engelke
    •  & William L. Wilson

  • Article
    | Open Access

    The development of high-performance magnetic field sensors is important for magnetic sensing and imaging. Here, the authors fabricate Hall sensors from graphene encapsulated in hBN and few-layer graphite, demonstrating high performance over a wide range of temperature and background magnetic field.

    • Brian T. Schaefer
    • , Lei Wang
    •  & Katja C. Nowack

  • Article
    | Open Access

    Directing the position, orientation, and long-range lateral order of block copolymer domains to produce technologically-useful, sublithographic patterns is a challenge. Here, the authors present a promising approach to overcome the challenge by directing assembly using spatial boundaries between planar, low-resolution regions on a surface with different composition.

    • Robert M. Jacobberger
    • , Vikram Thapar
    •  & Michael S. Arnold

  • Article
    | Open Access

    Here, the authors realize fast, all-electrical modulation of the near-field interactions between a layer of erbium emitters and graphene, by in-situ tuning of the graphene Fermi energy. They obtain strong interactions with a  >1000-fold increased decay rate for about 25% of the erbium emitters, and electrically modulate these interactions with frequencies up to 300 kHz.

    • Daniel Cano
    • , Alban Ferrier
    •  & Klaas-Jan Tielrooij

  • Article
    | Open Access

    Here, the authors propose an approach for harnessing nonlinear resonant scattering called stimulated plasmon polariton scattering. The proposal allows the excitation, amplification and detection 2D plasmon and phonon polaritons all across the THz-range while requiring optical components in the near-IR or visible range.

    • C. Wolff
    •  & N. A. Mortensen

  • Article
    | Open Access

    High temperatures induced during lasing can deform the substrate polymer used for fabrication of electrically conductive membranes. Here, the authors show that sequential infiltration synthesis of alumina stabilizes polyethersulfone (PES) membranes against deformation above the polymers’ glass transition temperature.

    • David S. Bergsman
    • , Bezawit A. Getachew
    •  & Jeffrey C. Grossman

  • Article
    | Open Access

    Here, the authors show that the interatomic coupling between two layers of a 2D crystal can be determined by studying the angle-resolved photoemission spectra of a trilayer structure with one aligned and one twisted interface, and obtain the inter-atomic coupling for carbon atoms in twisted trilayer graphene.

    • J. J. P. Thompson
    • , D. Pei
    •  & M. Mucha-Kruczyński

  • Article
    | Open Access

    The authors demonstrate wafer-scale, graphene-based ion sensitive field effect transistors arrays for simultaneous concentration measurement of K+, Na+, NH4+, NO3−, SO42−, HPO42− and Cl−, and use their technology for real-time ion concentration measurements in an aquarium with lemnoideae lemna over a period of three weeks.

    • Ibrahim Fakih
    • , Oliver Durnan
    •  & Thomas Szkopek

  • Article
    | Open Access

    Poor mechanical properties of reduced graphene oxide sheets hinder development of flexible energy storage systems. MXene functionalised graphene oxide with Ti-O-C bonding and additional crosslinking is here reported to dramatically increase toughness for flexible supercapacitors.

    • Tianzhu Zhou
    • , Chao Wu
    •  & Qunfeng Cheng

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