Volume 21

  • No. 8 August 2022

    Gear-based mechanical metamaterials

    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.

    See Fang et al.

  • No. 7 July 2022

    Hierarchical electrodes for semi-artificial photosynthesis

    Wiring photosynthetic biomachineries to electrodes is promising for sustainable bio-electricity and fuel generation, but designing such interfaces is challenging. Aerosol jet printing is now used to generate hierarchical pillar array electrodes using indium tin oxide nanoparticles for high-performance semi-artificial photosynthesis.

    See Chen et al.

  • No. 6 June 2022

    Double-fibril network for highly efficient organic photovoltaics

    The morphology of donor–acceptor blends in organic photovoltaics dictates the efficiency of the exciton dissociation and charge diffusion, and thus the final device performance. Here, the authors show that filament assembly helps to maximize the output, further enabling a power conversion efficiency greater than 19%.

    See Zhu et al.

  • No. 5 May 2022

    Hollow spheres enable tandem catalysis

    Metal oxide–zeolite bifunctional catalysts allow coupling of reactions and so enhance catalytic processes, but structure and reactivity control is difficult. Here, a general synthesis is presented for metal oxide–zeolite double-shelled hollow spheres, which outperform other catalysts for petroleum production.

    See Xiao et al.

  • No. 4 April 2022

    Photo-enhanced ionic conductors

    Grain boundary conductivity limitations are ubiquitous in materials science. Illumination with above-bandgap light is now shown to decrease grain boundary resistance in a model gadolinium-doped ceria solid ionic conductor.

    See Defferriere et al.

  • No. 3 March 2022

    Weaving molecules

    Molecular weaving is the entanglement of one-dimensional flexible molecules into higher-dimensional networks. This Perspective provides an overview of the progress so far, and discusses the future challenges and potentials of this field.

    See Zhang et al.

  • No. 2 February 2022

    Structural mapping of porous intercalation electrodes

    Designing electrode architectures for Li-ion batteries that can be reversibly accessible for ion storage can be challenging. Using operando techniques, the mechanistic origin of lithiation-induced phase transformations in a V2O5 model cathode is now clarified.

    See Luo et al.

  • No. 1 January 2022

    Ferrimagnetic and topological spintronics

    Ferrimagnets offer the combined advantages of both ferromagnets and antiferromagnets for spintronics applications. This Review surveys recent progress.

    See Kim et al.