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Volume 19 Issue 11, November 2020

Volume 19 Issue 11

Platinum dissolution suppression

Deployment of proton-exchange membrane fuel cells is limited by the durability of Pt-nanoscale catalysts during cathodic oxygen reduction reactions. Dissolution processes on single crystalline and thin film surfaces are now correlated leading to the design of PtAu catalysts with suppressed dissolution.

See Lopes et al.

Image: Falconieri Visuals. Cover Design: Thomas Wilson.

Editorial

  • Editorial |

    The expanding realm of diamond and related superhard materials requires understanding their structural complexity and the correlation with synthesis conditions for potential properties engineering.

Comment

  • Comment |

    Meteoritic diamonds and synthesized diamond-related materials contain a wide variety of complex nanostructures. This Comment highlights and classifies this structural complexity by a systematic hierarchical approach, and discusses the perspectives on nanostructure and properties engineering of diamond-related materials.

    • Péter Németh
    • Kit McColl
    • Paul F. McMillan

News & Views

  • News & Views |

    The generation of charge-neutral anti-Frenkel defects in a complex transition metal oxide provides a useful pathway for controlling electronic conductivity while minimizing the impact on existing functions.

    • Ji Soo Lim
    • Chan-Ho Yang
  • News & Views |

    In situ metabolic labelling and targeted modulation of dendritic cells has been achieved using a hydrogel system in combination with covalent capture of antigens and adjuvants, facilitating improved tumour-specific immune response.

    • Joshua M. Gammon
    • Christopher M. Jewell
  • News & Views |

    The integration of silicon-based waveguides with barium titanate thin films enables the realization of efficient electro-optic switches and modulators operating at cryogenic temperatures, offering promising opportunities for quantum technologies.

    • Goran Z. Mashanovich
  • News & Views |

    The discovery of intrinsic quantum confinement effects in the form of oscillations in the optical absorption of formamidinium lead triiodide thin films is a vivid example of the surprising physical properties of these hybrid organic–inorganic materials.

    • Alejandro R. Goñi

Perspectives

  • Perspective |

    Although low-temperature water electrolysers are crucial for decarbonizing the industrial sector, substantial improvements in performance and deployment rates are needed. Recent developments in devices with modified architectures and designs, and practical challenges hampering large-scale deployment are discussed.

    • Marie Francine Lagadec
    • Alexis Grimaud

Review Articles

  • Review Article |

    Electrochemical capacitors can store electrical energy harvested from intermittent sources and deliver energy quickly, but increased energy density is required for flexible and wearable electronics and larger equipment. Progress in materials and devices and key perspectives in this field are outlined.

    • Patrice Simon
    • Yury Gogotsi

Letters

  • Letter |

    The integration of barium titanate thin films with silicon-based waveguides enables the operation of efficient electro-optic switches and modulators at temperatures as low as 4 K, with potential applications in quantum computing and cryogenic computing technologies.

    • Felix Eltes
    • Gerardo E. Villarreal-Garcia
    • Stefan Abel
  • Letter |

    Relaxor ferroelectric polymers are a material of choice for applications such as electrostrictive actuators or electrocaloric cooling. Here, the origin of relaxor behaviour at the molecular level is investigated and found to arise from conformational disorder.

    • Yang Liu
    • Bing Zhang
    • Qing Wang

Articles

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