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  • A hydroxide exchange membrane fuel cell consisting of a nickel-based anode and a cobalt–manganese–oxide cathode is shown to achieve a power density of 488 mW cm–2 at 95 °C.

    • Frédéric Jaouen
    News & Views
  • Giant exciton–polaritons come to the scene from a thin Cu2O crystal sandwiched by a microcavity. Their anticipated strong interactions may facilitate the development of a promising Rydberg solid-state platform for quantum technologies.

    • HeeBong Yang
    • Na Young Kim
    News & Views
  • Hui Deng, professor at the University of Michigan, talks to Nature Materials about the evolution of research in polariton physics over recent years and discusses the role of emerging materials in promoting a scenery full of challenges and possibilities.

    • Amos Martinez
  • Dynamic recrystallization helps to refine grain structures in metals and tune their properties. Confining recrystallization within prior nanoscale twinning provides a path for reaching exceptional grain refinement.

    • Roland E. Logé
    News & Views
  • Ultrathin CrSBr, a two-dimensional magnet, has been shown to exhibit very rich magnetic behaviours, from an unexpected magnetic order to optical emissions coupled to its magnetic state. This material has great potential for use in ultra-compact spintronics devices.

    • Ahmet Avsar
    News & Views
  • Excitonic states with hybrid dimensionality in layered silicon diphosphide exhibit interesting features such as linearly dichroic photoluminescence and unusually strong exciton–phonon coupling.

    • Matthieu Fortin-Deschênes
    • Fengnian Xia
    News & Views
  • Materials discovery and advances in synthesis are driving the fields of exciton and exciton–polariton physics, moving towards on-demand engineering of many-body quasiparticle interactions in solid-state systems.

  • Fruit flies injected with magnetic nanoparticles and genetically modified to sensitize neural circuits to the rate of change in temperature have enabled subsecond behavioural responses to magnetic stimuli and multi-channel magnetic control.

    • Michael G. Christiansen
    • Simone Schuerle
    News & Views
  • This Review discusses the development of electronanotribology, its intersection with room-temperature ionic liquids and how such collaboration can be used to electrically control friction at the nanoscale.

    • Fernando Bresme
    • Alexei A. Kornyshev
    • Michael Urbakh
    Review Article
  • Here the authors describe a method for remote magnetothermal stimulation of neurons that achieves subsecond behavioural responses in Drosophila fruit flies by combining magnetic nanoparticles with TRPA1-A, a rate-sensitive thermoreceptor. Tuning the properties of magnetic nanoparticles to respond to different magnetic field strengths and frequencies enables multichannel thermal magnetogenetic stimulation.

    • Charles Sebesta
    • Daniel Torres Hinojosa
    • Jacob T. Robinson
  • Hafnium dioxide is of technological interest as it is compatible with silicon; however, previous work indicates that a nanometre grain size is required to generate ferroelectricity. Here ferroelectric Y-doped HfO2 thin films with high crystallinity are grown with large crystal grain sizes, indicating that ferroelectricity is intrinsic.

    • Yu Yun
    • Pratyush Buragohain
    • Xiaoshan Xu
  • A general method by controlling reaction kinetics is proposed to synthesize 67 kinds of two-dimensional crystal with custom-made phases and compositions, in particular, Fe- and Cr-based (layered and non-layered) chalcogenides and phosphorous chalcogenides, which show interesting ferromagnetism and superconductivity properties.

    • Weiguang Yang
    • Jieun Yang
    • Hyeon Suk Shin
    News & Views
  • Distinct electronic and optical properties emerge from quantum confinement in low-dimensional materials. Here, combining optical characterization and ab initio calculations, the authors report an unconventional excitonic state and bound phonon sideband in layered silicon diphosphide.

    • Ling Zhou
    • Junwei Huang
    • Hongtao Yuan
    Article Open Access
  • A design paradigm to create robust robotic metamaterials using versatile gear clusters is demonstrated. It enables intriguing programmability of elastic properties and shape while preserving stability for intelligent machines.

    • Xin Fang
    • Jihong Wen
    • Peter Gumbsch
    Article Open Access