Nanoscale devices articles within Nature Communications

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  • Article
    | Open Access

    The efficiency of upconversion electroluminescence remains very low for single-molecule emitters. Here, the authors report over one order of magnitude improvement in the emission efficiency via engineering energy-level alignments for triplet relayed upconversion involving only carrier injection.

    • Yang Luo
    • , Fan-Fang Kong
    •  & Zhen-Chao Dong

  • Article
    | Open Access

    Smart sensors are important components in the development of touchless human-machine interaction systems. Here, the authors describe a smart 3D porous crystalline organic cage-based system that exhibits remarkable responsiveness to fingertip humidity, contributing to the advancement of touchless human-machine interaction technology.

    • Jinrong Wang
    • , Weibin Lin
    •  & Niveen M. Khashab

  • Article
    | Open Access

    Researchers showcase an integrated photonic device with monocrystalline CsPbBr3 perovskite. Employing top-down etching approach, it introduces for micro lasers, beam splitters, X-couplers, Mach-Zehnder interferometers on perovskite films. This opens avenues for integrating perovskite semiconductors into optical chips, promising advancements in information and computing science.

    • Qi Han
    • , Jun Wang
    •  & Li Ji

  • Article
    | Open Access

    True amplification of spin waves by spin-orbit torque, which manifests itself by an exponential increase in amplitude with propagation distance, has so far remained elusive. Here, the authors realize amplification using clocked nanoseconds-long spin-orbit torque pulses in magnonic nano-waveguides.

    • H. Merbouche
    • , B. Divinskiy
    •  & V. E. Demidov

  • Article
    | Open Access

    Fe3GaTe2 is a van der Waals material with a Curie temperature well above room temperature, making it an attractive material for integration into spintronic devices. Here, Kajale et al demonstrate spin-orbit torque induced switching of the magnetization of Fe3GaTe2, above room temperature, using a Pt spin Hall layer.

    • Shivam N. Kajale
    • , Thanh Nguyen
    •  & Deblina Sarkar

  • Article
    | Open Access

    Frequency converters for wireless internet of things applications typically require separate circuits for different functions, causing energy and performance inefficiencies. Using an epitaxially grown VO2 memristor array, Liu et al. present a frequency converter with in-situ frequency synthesis and mix functionality.

    • Chang Liu
    • , Pek Jun Tiw
    •  & Yuchao Yang

  • Article
    | Open Access

    Metal-metal interfaces hold promise as contacting moieties for single-molecule devices with tunable functionality, yet the direct bonding has remained a challenge. Here, Lee et al. report the formation of Fe-Au bond without chemical ligand support in ferrocene-based molecular junctions.

    • Woojung Lee
    • , Liang Li
    •  & Latha Venkataraman

  • Article
    | Open Access

    Qudits, higher-dimensional analogues of qubits, expand quantum state space for information processing using fewer physical units. Here the authors demonstrate control over a 16-dimensional Hilbert space, equivalent to four qubits, using combined electron-nuclear states of a single Sb donor atom in Si.

    • Irene Fernández de Fuentes
    • , Tim Botzem
    •  & Andrea Morello

  • Article
    | Open Access

    Electron charge and spin shuttling is a promising technique for connecting distant spin qubits. Here the authors use conveyor-mode shuttling to achieve high-fidelity transport of a single electron spin in Si/SiGe by separation and rejoining of two spin-entangled electrons across a shuttling distance of 560 nm.

    • Tom Struck
    • , Mats Volmer
    •  & Lars R. Schreiber

  • Article
    | Open Access

    Here, the authors report the synthesis and characterization of doped nanoporous graphene superlattices, showing their improved properties for electromagnetic shielding, energy harvesting, optoelectronic and thermoelectric applications.

    • Hualiang Lv
    • , Yuxing Yao
    •  & Xiaoguang Wang

  • Article
    | Open Access

    2D vertical transport transistors (VTFETs) may promote the downscaling of electronic devices, but their performance is usually restricted by the thermionic limit. Here, the authors report the realization of short-channel steep-slope VTFETs based on MoS2/MoTe2 heterojunctions integrated with resistance threshold switching cells.

    • Qiyu Yang
    • , Zheng-Dong Luo
    •  & Genquan Han

  • Article
    | Open Access

    Charge-to-spin conversion allows for the generation and control of spin polarization via a charge current. Typically, this is done with non-magnetic materials with large spin-orbit interactions such as Platinum. Herein, Dai et al demonstrate an intriguing charge-to-spin mechanism, a magnetic spin Hall effect, in a van der Waals heterostructure.

    • Yudi Dai
    • , Junlin Xiong
    •  & Feng Miao

  • Article
    | Open Access

    By coupling a spin-qubit to a superconducting resonator, remote spin-entanglement becomes feasible. Here, Ungerer et al achieve strong coupling between a superconducting resonator and a singlet-triplet spin qubit, in an InAs nanowire.

    • J. H. Ungerer
    • , A. Pally
    •  & C. Schönenberger

  • Article
    | Open Access

    Highly polarized nuclear spins can supress decoherence of electron spin qubits, but this requires near-unity polarization. Here the authors implement a protocol combining optical excitation and fast carrier tunnelling to achieve nuclear spin polarizations above 95% in GaAs quantum dots on a timescale of 1 minute.

    • Peter Millington-Hotze
    • , Harry E. Dyte
    •  & Evgeny A. Chekhovich

  • Article
    | Open Access

    Exceptional points emerge in systems with loss and gain when loss and gain in the system are balanced. Due to the careful balancing involved, they are highly sensitive to perturbations, making them exceptionally useful for sensors and other devices. Here, Wittrock et al observe a variety of complex dynamics associated with exceptional points in coupled spintronic nano-oscillators.

    • Steffen Wittrock
    • , Salvatore Perna
    •  & Vincent Cros

  • Article
    | Open Access

    Artificial spin ices are nanomagnetic metamaterials, whose collective magnetization self-organizes into extended domains. However, controlling when, where and how domains change has proven difficult, yet is crucial for technological applications. Here, Jensen and Strømberg et al. introduce astroid clocking, which enables controlled, stepwise growth and reversal of magnetic domains, using only global fields.

    • Johannes H. Jensen
    • , Anders Strømberg
    •  & Erik Folven

  • Article
    | Open Access

    Achieving genetic circuits on single DNA molecules could have varied applications. Here, authors observed proteins emerging from single DNA molecules through coupled transcription-translation complexes, and show that nascent proteins lingered on DNA, regulating cascaded reactions on the same DNA and allowing the design of a pulsatile genetic circuit.

    • Ferdinand Greiss
    • , Nicolas Lardon
    •  & Roy Bar-Ziv

  • Article
    | Open Access

    Existing neuromorphic hardware, focusing mainly on shallow-reservoir computing, is challenged in providing adequate spatial and temporal scales characteristic for effective computing. Here, Gao et al. report an ultra-short channel organic neuromorphic vertical transistor with distributed reservoir states.

    • Changsong Gao
    • , Di Liu
    •  & Huipeng Chen

  • Article
    | Open Access

    L. Rocchino et al. experimentally demonstrate a magnetic field effect transistor based on the Weyl semimetal NbP as the active channel material. A gate magnetic field is generated by current flowing in an integrated superconductor NbN. The device operation relies on the extreme magnetoresistance of the NbP.

    • Lorenzo Rocchino
    • , Federico Balduini
    •  & Cezar B. Zota

  • Article
    | Open Access

    Quantum devices exhibiting non-reciprocal behaviour have been attracting attention for fundamental studies and applications. Here the authors report a microwave quantum diode based on a superconducting flux qubit coupled to two resonators, which has the advantage of compactness and scalability.

    • Rishabh Upadhyay
    • , Dmitry S. Golubev
    •  & Jukka P. Pekola

  • Article
    | Open Access

    Organic neural implants hold considerable promise for biocompatible neural interfaces. Here, the authors employ polymer-based organic electrochemical diodes and transistors to develop neuron-sized complex circuits, enabling multiplexing without crosstalk and demonstrate that, when integrated onto ultra-thin plastic, these circuits achieve high performance while maintaining minimal invasiveness.

    • Ilke Uguz
    • , David Ohayon
    •  & Kenneth L. Shepard

  • Article
    | Open Access

    The simultaneous scaling down of the channel length and gate length of 2D transistors remains challenging. Here, the authors report a self-alignment process to fabricate vertical MoS2 transistors with sub-1 nm gate length and sub−50 nm channel length, exhibiting on-off ratios over 105 and on-state currents of 250 μA/μm at 4 V bias.

    • Liting Liu
    • , Yang Chen
    •  & Yuan Liu

  • Article
    | Open Access

    M. Valentini et al. study superconducting quantum interference devices (SQUIDs) where the weak link of the Josephson junctions is a germanium 2D hole gas. They report signatures of the tunneling of pairs of Cooper pairs. For a particular microwave drive power, they observe a 100% efficient superconducting diode effect.

    • Marco Valentini
    • , Oliver Sagi
    •  & Georgios Katsaros

  • Article
    | Open Access

    No preventive treatment addresses the underlying condition that leads to cardiac arrest. Here, researchers developed an injectable hydrogel electrode that achieves pacing that mimics physiological conduction with the potential to eliminate lethal arrhythmias and provide painless defibrillation.

    • Gabriel J. Rodriguez-Rivera
    • , Allison Post
    •  & Elizabeth Cosgriff-Hernandez

  • Article
    | Open Access

    Designing memristor-integrated passive crossbar arrays to accelerate artificial neural networks with high reliability remains a challenge. Here, the authors propose a self-rectifying resistive switching device incorporated into a crossbar array with a density of 1 kb whose operational performance is assessed in terms of defected-cell proportion, reading margin, and selection functionality.

    • Kanghyeok Jeon
    • , Jin Joo Ryu
    •  & Gun Hwan Kim

  • Article
    | Open Access

    Wavefront manipulation with metasurfaces is typically limited to low quality factors. Here, the authors show how higher-order Mie modes can be leveraged to design high quality factor optical metasurfaces for wavefront manipulation in two dimensions.

    • Claudio U. Hail
    • , Morgan Foley
    •  & Harry A. Atwater

  • Article
    | Open Access

    Shortening the inter-spin distance is an effective way to enhance magnetic coupling. However, it is typically challenging to change the inter-ion distance in most magnetic systems. Here, Huang et al present a strategy for enhancing magnetic interactions, by confining a molecular magnetic system inside a carbon fullerene cage, leading to enhanced magnetic properties.

    • Chenli Huang
    • , Rong Sun
    •  & Song Gao

  • Article
    | Open Access

    Designing efficient nanoscale and adaptable bioinspired memristors remains a challenge. Here, the authors develop a bioinspired hydrophobically gated memristive nanopore capable of learning, forgetting, and retaining memory through an electrowetting mechanism.

    • Gonçalo Paulo
    • , Ke Sun
    •  & Alberto Giacomello

  • Article
    | Open Access

    Existing solutions based Advanced Encryption Standard to address the security issues of nonvolatile memories incurs significant performance and power overhead. Here, the authors propose a lightweight XOR-gate based encryption/decryption technique by exploiting in-situ array operations, which achieves significant area/latency/power reduction compared to conventional designs.

    • Yixin Xu
    • , Yi Xiao
    •  & Kai Ni

  • Article
    | Open Access

    S. Matsuo et al. report tunneling spectroscopy measurements on a device consisting of two Josephson junctions (JJ) sharing a single superconducting electrode. In isolation, each JJ would host an Andreev bound state (ABS). In their coherently-coupled JJs, the authors report the formation of an Andreev molecule due to hybridization of the two ABSs.

    • Sadashige Matsuo
    • , Takaya Imoto
    •  & Seigo Tarucha

  • Article
    | Open Access

    Ferroelectric transistors are promising building blocks for developing energy-efficient memory and logic applications. Here, the authors report a record high 300 K resistance on-off ratio achieved in ferroelectric-gated Mott transistors by exploiting a charge transfer layer to tailor the channel carrier density and mitigate the ferroelectric depolarization effect.

    • Yifei Hao
    • , Xuegang Chen
    •  & Xia Hong

  • Article
    | Open Access

    A fundamental challenge for molecular electronics is the change in photophysical properties of molecules upon direct electrical contact. Here, the authors observe hot luminescence emitted by single-molecule chromophores that are electrically and mechanically self-decoupled by a tripodal scaffold.

    • Vibhuti Rai
    • , Nico Balzer
    •  & Michal Valášek

  • Article
    | Open Access

    Resistive switching of 1T-TaS2 is promising for next-generation electronics. Here, using in operando electron microscopy, the authors determine that Joule heating drives the switching process, which will aid the engineering of future devices.

    • James L. Hart
    • , Saif Siddique
    •  & Judy J. Cha

  • Article
    | Open Access

    Layered thio- and seleno-phosphate ferroelectrics show promise for next-generation memory but have thermal stability issues. Using the electric field-driven phase transition in antiferroelectric CuCrP2S6, the authors introduce a robust memristor, emphasizing the potential of van der Waals antiferroelectrics in advanced neuromorphic computing.

    • Yinchang Ma
    • , Yuan Yan
    •  & Xixiang Zhang

  • Article
    | Open Access

    The authors demonstrate a large ensemble of quantum dots which is characterized using a cryogenic multiplexer-demultiplexer circuit based on selective area growth nanowires, establishing the feasibility of scaling future quantum circuits.

    • Dāgs Olšteins
    • , Gunjan Nagda
    •  & Thomas S. Jespersen

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