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  • Understanding the effects of fast neutrons on high-temperature superconductors is important for their application in fusion reactors. Here, a combined experimental and theoretical study reveals that ion irradiation disrupts superconductivity by introducing defects within the copper-oxygen planes.

    • Rebecca J. Nicholls
    • Sofia Diaz-Moreno
    • Susannah C. Speller
    Article Open Access
  • Quadruple perovskites are characterized by competing long-range spin interactions that result in complex magnetic structures. Here, the authors synthesize and characterize the magnetic behaviour of CaCo3Ti4O12, suggesting that the observed magnetic structures arise from different ways to avoid frustration in underlying kagome lattices.

    • Midori Amano Patino
    • Fabio Denis Romero
    • Yuichi Shimakawa
    Article Open Access
  • Probing the growth and evolution of phase-coexistence in complex materials is key to understanding electronic phase transitions. Here, a combination of THz time-domain spectroscopy and DC transport provides a way to probe coexistence of metallic and insulating clusters in a disorder-controlled metal-insulator transition.

    • Gulloo Lal Prajapati
    • Sarmistha Das
    • Dhanvir Singh Rana
    Article Open Access
  • Optical nanoantennas based on organic plasmonics are promising for their higher degree of tunability over metallic nanostructures. Here, nanodisks of polythiophene-based semiconducting polymers provide nanooptical antennas with resonances that are tunable over a 1000 nm wavelength range and can be switched off or on by doping modulation.

    • Akchheta Karki
    • Yu Yamashita
    • Magnus P. Jonsson
    Article Open Access
  • Recent advances in scanning probe-based tomographic imaging have greatly improved spatial resolution, but systematic and random errors are a serious impediment to reliable data extraction. Here, a combined optimization and alignment algorithm provides a scalable approach to error-correcting reconstruction of large datasets.

    • Sajid Ali
    • Matthew Otten
    • Z. W. Di
    Article Open Access
  • Multi-material 3D printing techniques are now enabling the rational design of metamaterials with both complex geometries and multiple materials compositions. Here, deep-learning methods are used to identify, among planar network structures, the rare designs that yield very unusual and desirable combinations of materials properties.

    • Helda Pahlavani
    • Muhamad Amani
    • Amir A. Zadpoor
    Article Open Access
  • Optimizing the microstructure of YBa2Cu3O7-x coated conductors across the magnetic field–temperature phase diagram is important for strengthening vortex pinning and thereby enhancing the critical current. Here, a systematic microstructural investigation identifies the most relevant vortex pinning contributions in a broad range of temperatures and magnetic fields.

    • Ferran Vallès
    • Anna Palau
    • Teresa Puig
    Article Open Access
  • The 3D stiffness of a self-folded metamaterial structure is limited by the low stiffness required by the folding process. Here, the stiffness limits of self-folding bilayers are theoretically established by a nonlinear model and experimentally validated on polymer-metal composites, providing the optimal combinations of geometrical and mechanical properties of folded constructs.

    • Teunis van Manen
    • Vahid Moosabeiki Dehabadi
    • Amir A. Zadpoor
    Article Open Access
  • Light and flexible thermoelectric generators operating at room temperature are highly desirable for wearable microelectronics. Here, flexible thermoelectric composites comprising semiconducting Bi2Te3 particles and conductive polymers exhibit a high output power within a small temperature window around room temperature.

    • Shuping Lin
    • Lisha Zhang
    • Xiaoming Tao
    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
  • Understanding grain morphology and kinetics of solid-phase crystallization is important for controlling the functional properties of polycrystalline materials. Here, in situ coherent X-ray diffraction imaging and transmission electron microscopy elucidate quantitatively the kinetics of a single-grain growth in Zr-doped In2O3 films.

    • Dmitry Dzhigaev
    • Yury Smirnov
    • Michael Elias Stuckelberger
    Article Open Access
  • Visualizing the composition of grain networks is key for understanding the structure evolution and functional properties of composite materials. Here, X-ray fluorescence tomography, coupled with an absorption correction algorithm, reveals mechanistic insights in the phase transformations and transport properties of a mixed ionic-electronic conductor.

    • Mingyuan Ge
    • Xiaojing Huang
    • Yong S. Chu
    Article Open Access
  • Long-range interactions have often been considered as a nuisance or correction to the desired features of metamaterials. Here, nonlocal interactions in 2D acoustic metamaterials are instead exploited as a tool to engineer peculiar wave dispersions, such as multiple roton-like minima, leading to negative and triple refraction.

    • Ke Wang
    • Yi Chen
    • Martin Wegener
    Article Open Access
  • UTe2 is an unconventional superconductor with a putative multicomponent triplet order parameter, but the observation of two superconducting transitions remains controversial. Here, UTe2 single crystals exhibit reduced disorder and a single transition at 2 K, setting new constraints on the multicomponent superconductivity scenario.

    • Priscila F. S. Rosa
    • Ashley Weiland
    • Sean M. Thomas
    Article Open Access
  • Disordered hyperuniform materials are interesting due to the asymptotic absence of long-wavelength density fluctuations, leading to unconventional phenomenology. Here, planar disorder in superconducting vortex matter is shown to suppress hyperuniformity in an anisotropic way, providing insight into the thickness dependence of hyperuniformity.

    • Joaquín Puig
    • Federico Elías
    • Yanina Fasano
    Article Open Access