Nanoscale devices articles within Communications Materials

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  • Article
    | Open Access

    In-plane anisotropy of electrical conductance in 2D materials is an important element in engineering 2D devices. Here, the charge transport anisotropy at the metal contacts of hBN-encapsulated ReS2 field-effect transistors is investigated, revealing a substantial contact anisotropy ratio of up to 70 at 77 K.

    • Hyokwang Park
    • , Myeongjin Lee
    •  & Won Jong Yoo

  • Article
    | Open Access

    Magnetic Josephson junctions are important for studying the interplay between superconductivity and ferromagnetism. Here, an inverse proximity effect with tunable nanoscale spin ordering at the superconductor/ferromagnet interface of Nb-permalloy structures is observed, confirming theoretical predictions on these systems.

    • Roberta Satariano
    • , Anatoly Fjodorovich Volkov
    •  & Davide Massarotti

  • Article
    | Open Access

    Memory structures are key components of any functional computing device, but achieving persistent storage of information in the form of light is extremely difficult. Here, the authors demonstrate the sequential formation of multiple memory pathways in photochromic crystals via optical near-field interactions.

    • Yuji Arakawa
    • , Kazuharu Uchiyama
    •  & Hirokazu Hori

  • Article
    | Open Access

    Pinning sites are extremely detrimental to the frequency tunability of nano-rectifiers based on magnetic tunnel junctions. Here, the effect of pinning defects in vortex-based magnetic tunnel junctions is thoroughly explored, revealing that an amorphous magnetic material utilized as free layer can significantly reduce the impact of pinning.

    • Alex. S. Jenkins
    • , Leandro Martins
    •  & Ricardo Ferreira

  • Article
    | Open Access

    Suspended carbon nanotubes are ideal for hosting long-lived quantum states but mechanically integrating nanotubes into circuits is challenging. Here, by engineering a transparent metal-nanotube interface, the authors can reach the open quantum dot regime and integrate the nanotube within the circuit with a 200 nm precision.

    • Tim Althuon
    • , Tino Cubaynes
    •  & Wolfgang Wernsdorfer

  • Article
    | Open Access

    Cooling computer chips remains a key requirement for improving their performance. Here, a CMOS-compatible MOSFET is used to electrically, rather than physically, induce quantum confinement in a thermoelectric device, improving its thermoelectric performance and making it a viable microchip thermal management solution.

    • Samuel W. Oxandale
    • , Charles Reinke
    •  & Ihab El-Kady

  • Article
    | Open Access

    Brain-inspired neuromorphic computing is a key technology for processing an ever-growing amount of data. Here, an artificial synapse with dual resistance modulation mechanisms is demonstrated, achieving a dynamic range of 60, an endurance exceeding 1010 cycles, and more than 10 years of retention.

    • Mattia Halter
    • , Laura Bégon-Lours
    •  & Bert Jan Offrein

  • Review Article
    | Open Access

    Integrating perovskite photovoltaics with other systems can substantially improve their performance. This Review discusses various integrated perovskite devices for applications including tandem solar cells, buildings, space applications, energy storage, and cell-driven catalysis.

    • Abdulaziz S. R. Bati
    • , Yu Lin Zhong
    •  & Munkhbayar Batmunkh

  • Article
    | Open Access

    Voltage-controlled magnetic random-access memory is promising for high-performance computing applications. Here, a perpendicular magnetic tunnel junction structure with high voltage-controlled magnetic anisotropy coefficient is developed, allowing sub-volt and sub-nanosecond precessional switching.

    • Yixin Shao
    • , Victor Lopez-Dominguez
    •  & Pedram Khalili Amiri

  • Article
    | Open Access

    Achieving photodetectors with a wide spectral range and rapid response remains challenging. Here, Sb2Te3 nanosheets are used to construct a photodetector that covers visible to millimeter wavelengths, with a fast response time of 900 ns.

    • Wanli Ma
    • , Tuntan Wu
    •  & Zhiming Huang

  • Article
    | Open Access

    Developing scalable strategies of miniaturization and integration is key for achieving high-density integrated circuit devices. Here, the authors propose a silicon-based one-transistor device with a 40% reduction in circuit footprint, which combines the functionalities of logic gates, memory, and artificial synapses for mass production.

    • Mingzhi Dai
    • , Zhitang Song
    •  & Junhao Chu

  • Article
    | Open Access

    Nanoscale light manipulation and characterization are essential in nano-optics, but conventional microscopy or indirect imaging methods are often limited by low resolution or invasive nature. Here, a non-destructive light-field imaging with ~20 nm resolution is realized by p-n junction photodetection in graphene controlled by gate voltage.

    • Tongcheng Yu
    • , Francisco Rodriguez
    •  & Alexander N. Grigorenko

  • Article
    | Open Access

    Topological insulator nanowires are interesting because, in the presence of superconductivity, they may host elusive Majorana fermions. Here, superconductivity in (Bi1−xSbx)2Te3 topological-insulator nanowires is realized by using palladium diffusion, providing a tunable platform for Majorana zero modes.

    • Mengmeng Bai
    • , Xian-Kui Wei
    •  & Yoichi Ando

  • Article
    | Open Access

    Thin-film phototransistors based on multilayer MoS2 are of great technological importance, but their photoresponsivity may be hindered by an indirect bandgap. Here, nano-patterning of multilayer MoS2 overcomes this limitation by inducing trap states within the bandgap, resulting in a high photoresponsivity of 622.2 A W−1.

    • Heekyeong Park
    • , Jiyoul Lee
    •  & Sunkook Kim

  • Article
    | Open Access

    The redistribution of water molecules when an ion passes through a nanopore is known to create complex patterns. Here, an analytical model accurately predicts the patterns when an ion passes through a graphene nanopore, and reveals the physical origins of the patterns.

    • Miraslau L. Barabash
    • , William A. T. Gibby
    •  & Peter V. E. McClintock

  • Article
    | Open Access

    Controlling the speed of electrophoresis across a solid-state nanopore is crucial for single-molecule sensing and sequencing. Here, a gate-controlled nanopore is able to trap and slow-down the translocation dynamics of nanoparticles by balancing the electrophoretic and hydrodynamic drag forces.

    • Makusu Tsutsui
    • , Sou Ryuzaki
    •  & Tomoji Kawai

  • Article
    | Open Access

    Wearable, real-time devices that can monitor hormones are important for personalized healthcare. Here, a platinum/graphene aptamer extended gate field effect transistor is shown to detect cortisol, the primary stress hormone, in physiological fluid.

    • Shokoofeh Sheibani
    • , Luca Capua
    •  & Adrian M. Ionescu

  • Article
    | Open Access

    Sensitive and scalable gas sensors are essential in daily life air-quality monitoring. Here, a monolithically integrated gas sensing circuit based on two-step-grown polycrystalline MoS2 films is fabricated, showing good switching and NO2 gas sensing response in a wide detection range of 1 to 256 ppm.

    • Sehwan Kim
    • , Heekyeong Park
    •  & Sunkook Kim

  • Article
    | Open Access

    The design of advanced batteries relies on careful control of molecular interactions. Here, a protein nanopore, inserted into a lipid membrane, is shown to discern supramolecular polysulfide/cyclodextrin complexes differing by a single sulfur atom, a concept that might be used to design membrane separators in batteries.

    • Fanny Bétermier
    • , Benjamin Cressiot
    •  & Jean-Marie Tarascon

  • Article
    | Open Access

    Topological insulators in contact with a superconductor could house unusual physical states such as Majorana fermions. Here, the authors fabricate and report the  electron-transport characteristics of Josephson junctions built using a nanoscale topological insulator, finding evidence for ballistic transport in the surface states of the nanocrystals.

    • Vasily S. Stolyarov
    • , Dmitry S. Yakovlev
    •  & Dimitri Roditchev

  • Review Article
    | Open Access

    The current surge in data generation necessitates devices that can store and analyze data in an energy efficient way. This Review summarizes and discusses developments on the use of spintronic devices for energy-efficient data storage and logic applications, and energy harvesting based on spin.

    • Jorge Puebla
    • , Junyeon Kim
    •  & Yoshichika Otani

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