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Showing 1–13 of 13 results
Advanced filters: Author: Marcelo Lozada-Hidalgo Clear advanced filters

  • Defect-free monolayers of graphene and hexagonal boron nitride are highly permeable to thermal protons, but are impenetrable to gases. Here the authors show that mechanically exfoliated crystals exhibit perfect proton selectivity, corroborating proton transport through the bulk without atomic-scale defects.

    • L. Mogg
    • S. Zhang
    • M. Lozada-Hidalgo
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-5

  • This study shows that vacancy-rich titania monolayers are highly permeable to protons while remaining impermeable to helium with proton conductivity exceeding 100 S cm−2 at 200 °C and surpassing targets set by industry roadmaps.

    • Yu Ji
    • Guang-Ping Hao
    • Pengzhan Sun
    ResearchOpen Access
    Nature Communications
    Volume: 15, P: 1-8

  • Layered clays are of interest for membranes and many other applications but their ion-exchange dynamics remain unexplored in atomically thin materials. Here, using electron microscopy, it is found that the ion diffusion for few-layer two-dimensional clays approaches that of free water and that superlattice cation islands can form in twisted and restacked materials.

    • Yi-Chao Zou
    • Lucas Mogg
    • Sarah J. Haigh
    Research
    Nature Materials
    Volume: 20, P: 1677-1682

  • Independent control of the electric field and charge-carrier density in double-gated graphene allows the decoupling of proton transport and lattice hydrogenation, enabling both accelerated proton transport and proton-based logic operations.

    • J. Tong
    • Y. Fu
    • M. Lozada-Hidalgo
    ResearchOpen Access
    Nature
    Volume: 630, P: 619-624

  • Few-layer micas show proton permeation across the sheet, exceeding that of graphene and hBN by one to two orders of magnitude.

    • L. Mogg
    • G.-P. Hao
    • M. Lozada-Hidalgo
    Research
    Nature Nanotechnology
    Volume: 14, P: 962-966

  • Direct observation of electric field effects in the water dissociation reaction remains elusive. Here, the authors report an exponential acceleration of the reaction as function of the interfacial electric field using graphene electrodes decorated with Pt.

    • J. Cai
    • E. Griffin
    • M. Lozada-Hidalgo
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • Recent experiments have shown that proton transport through graphene electrodes can be promoted by light, but the understanding of this phenomenon remains unclear. Here, the authors report the electrical tunability of this photo-effect, showing a connection between graphene electronic and proton transport properties.

    • S. Huang
    • E. Griffin
    • M. Lozada-Hidalgo
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-7

  • GO monolayers are presumed to invariably contain a large density of nanoscale pinholes. Here the authors present gas and proton transport measurements which show that GO monolayers can be pinhole-free over micrometer-scale areas.

    • Z. F. Wu
    • P. Z. Sun
    • M. Lozada-Hidalgo
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-8

  • A study using high-resolution scanning electrochemical cell microscopy attributes proton permeation through defect-free graphene and hexagonal boron nitride to transport across areas of the structure that are under strain.

    • O. J. Wahab
    • E. Daviddi
    • P. R. Unwin
    ResearchOpen Access
    Nature
    Volume: 620, P: 782-786

  • Measurements show that monolayers of graphene and hexagonal boron nitride are unexpectedly highly permeable to thermal protons and that their conductivity rapidly increases with temperature, but that no proton transport is detected for few-layer crystals.

    • S. Hu
    • M. Lozada-Hidalgo
    • A. K. Geim
    Research
    Nature
    Volume: 516, P: 227-230