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Showing 1–16 of 16 results
Advanced filters: Author: "M Walker" Clear advanced filters

  • Slow waves in sleep are crucial for homeostatic regulation of brain function. Here the authors show similar slow wave activity occurs during wakefulness in people with epilepsy to counter the impact of abnormal, epileptic, brain activity.

    • Laurent Sheybani
    • Umesh Vivekananda
    • Matthew C. Walker
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-14

  • Harnessing nonlinear optics in optoelectronic devices requires a platform that exhibits both giant optical nonlinearity and is compatible with photonic-circuit fabrication. Here, the authors demonstrate such a system that uses strong light–matter coupling between waveguide photons and quantum-well excitons.

    • P. M. Walker
    • L. Tinkler
    • D. N. Krizhanovskii
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-7

  • Water and hydroxyl enrichment in the solar-wind-irradiated rim of an olivine grain from asteroid Itokawa suggests that its regolith could contain ~20 l m−3 of water from solar wind—a potential water source for airless planetary bodies.

    • Luke Daly
    • Martin R. Lee
    • Michelle S. Thompson
    Research
    Nature Astronomy
    Volume: 5, P: 1275-1285

  • Giant effective photon–photon interactions are achieved by hybridizing light with excitons in an InGaAs-based quantum well micropillar cavity. Cross-phase modulation of up to 3 mrad per polariton is observed at the laser intensity below the single-photon level.

    • Tintu Kuriakose
    • Paul M. Walker
    • Dmitry N. Krizhanovskii
    Research
    Nature Photonics
    Volume: 16, P: 566-569

  • A microfluidic device design that allows a nanolitre droplet to be trapped and sequentially diluted without the need for any moving parts opens up new possibilities in high-throughput screening.

    • Glenn M Walker
    News & Views
    Nature Chemistry
    Volume: 3, P: 428-429

  • The newest form of radioactivity, two-proton decay, has been imaged directly using an optical time-projection chamber. The protons are emitted in a way that reflects the internal dynamics of the parent nucleus.

    • Philip M. Walker
    • Ronald C. Johnson
    News & Views
    Nature Physics
    Volume: 3, P: 836-837

  • Multi-scale modelling of the deformation of magnesium oxide reveals the need for a re-examination of the way in which laboratory data are used to estimate the strength of Earth's lower mantle. See Letter p.177

    • Andrew M. Walker
    News & Views
    Nature
    Volume: 481, P: 153-154

  • Periodic oscillations have been observed in what should be straightforward exponential decay curves of two radioactive isotopes. An entirely mysterious phenomenon, its proposed cause seems equally exotic.

    • Philip M. Walker
    News & Views
    Nature
    Volume: 453, P: 864-865

  • Environmental endocrine disrupting chemicals (EDCs) perturb reproductive development and function. Recent evidence suggests that developmental EDC exposures may disrupt the sexual differentiation of reproductive neuroendocrine systems through epigenetic programming of hypothalamic gene expression. This Review discusses endocrine disruption by four prototypical EDCs: vinclozolin, diethylstilbesterol, bisphenol A and polychlorinated biphenyls, and presents evidence for epigenetic modifications and transgenerational transmission of endocrine disrupted traits to future generations.

    • Deena M. Walker
    • Andrea C. Gore
    Reviews
    Nature Reviews Endocrinology
    Volume: 7, P: 197-207

  • Eosinophils are potent innate immune cells that are numerous in the gastrointestinal tract in health and disease. This Review discusses the role of eosinophils in the pathogenesis of numerous disorders of the gastrointestinal tract, including primary eosinophilic gastrointestinal disorders, common functional conditions (such as dyspepsia), and gastrointestinal disorders in patients with allergic disease.

    • Nicholas Powell
    • Marjorie M. Walker
    • Nicholas J. Talley
    Reviews
    Nature Reviews Gastroenterology & Hepatology
    Volume: 7, P: 146-156