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  • Predicting the synthesizability of unknown crystals is important for accelerating materials discovery. Here, the synthesizability of crystals with any given composition and structure can be predicted by a deep learning model that maps crystals onto color-coded 3D images processed by convolutional neural networks.

    • Ali Davariashtiyani
    • Zahra Kadkhodaie
    • Sara Kadkhodaei
    Article Open Access
  • Magnetic skyrmions are swirling topological spin textures induced by chiral interactions in non-centrosymmetric systems. Here, a Pt-Fe3Sn bilayer exhibits a thickness-dependent magnetic anisotropy and interfacial Dzyaloshinskii-Moriya interaction that are key to the controlled stabilization of a skyrmion crystal.

    • Kohei Fujiwara
    • Yasuyuki Kato
    • Atsushi Tsukazaki
    Article Open Access
  • There is growing interest in organic semiconductor devices for light-mediated neuromodulation, such as for retinal stimulation. Here, the key working principles of these devices are discussed, as well as promising applications and outstanding challenges for the field.

    • Danashi Imani Medagoda
    • Diego Ghezzi
    Perspective Open Access
  • Origami-inspired metamaterials are attractive for their programmable shape-shifting properties but are typically characterized by low structural rigidity. Here, 3D heterogeneous origami structures display highly reconfigurable mechanical properties, including finely controllable and reversible stiffness variation.

    • Yasuhiro Miyazawa
    • Hiromi Yasuda
    • Jinkyu Yang
    Article Open Access
  • Charged domain walls in ferroelectrics are interesting as they may enhance electrical conductivity. Here, atomic-resolution imaging of Ca3–xSrxTi2O7 reveals that charged domain boundaries are stabilized by an out-of-phase translational shift of crystallographic domains and that Sr ions accumulate at the boundaries.

    • Hiroshi Nakajima
    • Kosuke Kurushima
    • Shigeo Mori
    Article Open Access
  • Carbon dots are suitable for a range of biological applications due to their unique physicochemical properties and biological behavior. This Review summarizes research related to the emerging field of red-emissive two-photon carbon dots for bioimaging, biosensing, and phototherapeutic applications.

    • Pooria Lesani
    • Aina Hazeera Mohamad Hadi
    • Hala Zreiqat
    Review Article Open Access
  • There is an ongoing drive for new additive manufacturing processes that produce complex parts. Here, cavity vat polymerisation is introduced, in which cavities are filled with a dual-curing resin that forms an elastomer/thermoset covalently bonded interface, creating hard-shell/soft-core parts.

    • Joel Bachmann
    • Philip Obst
    • Olaf Hinrichsen
    Article Open Access
  • There is an ongoing need to increase the operating temperature of jet engines, requiring new high-temperature materials. Here, local phase transformations at superlattice stacking faults contribute to a three times improvement in creep strength in a Ni-based superalloy.

    • Timothy M. Smith
    • Nikolai A. Zarkevich
    • Michael J. Mills
    Article Open Access
  • Quantum materials host many exotic properties, which might be utilized for new electronic devices. Here, artificial intelligence for the discovery of quantum materials is discussed, covering both materials and property prediction, and high-throughput synthesis.

    • Valentin Stanev
    • Kamal Choudhary
    • Ichiro Takeuchi
    Review Article Open Access
  • Microscale resonators are widely used in modern technology and achieving large tunability of their resonant frequency is highly desirable. Here, a design for electro-superlubric springs, based on a restoring force between sliding solid surfaces, is predicted to have continuously tunable resonant frequencies from zero to several GHz.

    • Zhanghui Wu
    • Xuanyu Huang
    • Quanshui Zheng
    Article Open Access
  • Miniaturized systems for in situ plant applications are important to understand and preserve natural ecosystems. Here, the attachment of bioinspired microhooks to the surfaces of plant leaves is investigated, and on-leaf soft machines fabricated for monitoring conditions and for molecular delivery.

    • Isabella Fiorello
    • Fabian Meder
    • Barbara Mazzolai
    Article Open Access
  • Three-dimensional magnetometers are key for detecting the motion of objects in automated electronics, but typically require multiple sensors on orthogonal planes. Here, a compact planar-type 3D magnetometer with low power consumption is realized using a topological ferromagnetic Fe-Sn heterostructure.

    • Junichi Shiogai
    • Kohei Fujiwara
    • Atsushi Tsukazaki
    Article Open Access
  • Shielding materials are crucial in protecting devices against electromagnetic radiation but are often heavyweight and operate in narrow frequency ranges. Here, highly conductive, lightweight, ultrathin, and flexible membranes based on Ag-WO3-coated polymeric nanofibers provide multispectral shielding from microwaves to X-rays.

    • Dayong He
    • Nan Zhang
    • Ce Wang
    Article Open Access
  • Lead telluride is an important thermoelectric material but its metal-to-semiconductor transition above 230 °C is not fully understood. Here, atomic-resolution transmission electron microscopy provides structural insights into this transition, explaining the metallic behavior by a dislocation network within the rock salt structure.

    • Iryna Zelenina
    • Paul Simon
    • Yuri Grin
    Article Open Access
  • Long coherence times are a key property of superconducting qubits, but in conventional Al-based Josephson junctions they are limited by microscopic two-level systems. Here, NbN-based qubits on Si promise to overcome this limitation, showing an energy relaxation time T1 = 16.3 μs and a spin-echo dephasing time T2 = 21.5 μs.

    • Sunmi Kim
    • Hirotaka Terai
    • Kouichi Semba
    Article Open Access