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Showing 1–16 of 16 results
Advanced filters: Author: John O. Dabiri Clear advanced filters

  • Swimming animals are generally assumed to generate forward thrust by pushing surrounding water rearwards. Here, Gemmell et al.show that efficient swimming in lampreys and jellyfish is achieved primarily through suction, as vortex-associated low pressure regions are synchronized by undulations of the body.

    • Brad J. Gemmell
    • Sean P. Colin
    • John O. Dabiri
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-8

  • Physonect siphonophores are highly mobile jellyfish with complex colonial organization. Here, Costelloet al. show that division of labour among developmental stages controls the direction and propulsion of the colony, with older individuals providing thrust and younger individuals providing torque.

    • John H. Costello
    • Sean P. Colin
    • Kelly R. Sutherland
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-6

  • Sir Charles Darwin, grandson of the famous evolutionary pioneer, was a physicist who suggested that swimming animals might contribute significantly to the mixing of water in the ocean. Here, observations of swimming jellyfish are used to create and validate a theoretical model for the relative contributions of Darwinian mixing and turbulent wake mixing. The contribution of living organisms to ocean mixing is found to be substantial — in the same order of magnitude as winds and tides.

    • Kakani Katija
    • John O. Dabiri
    Research
    Nature
    Volume: 460, P: 624-626

  • Animal propulsors—wings and fins—typically bend during motion. Here, the authors analysed video data on animal propulsor bending and find that, for propulsion within inertially dominated flows, the flexion angles and the positions of the point of flexion are similar across the animal kingdom.

    • Kelsey N. Lucas
    • Nathan Johnson
    • John H. Costello
    Research
    Nature Communications
    Volume: 5, P: 1-7

  • Navigation and trajectory planning in environments with background flow, relevant for robotics, are challenging provided information only on local surrounding. The authors propose a reinforcement learning approach for time-efficient navigation of a swimmer through unsteady two-dimensional flows.

    • Peter Gunnarson
    • Ioannis Mandralis
    • John O. Dabiri
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-7

  • Although structural variation has been previously associated with autism spectrum disorders, this study reports a genome-wide significant association of common variants with susceptibility to this disorder group. The results implicate neuronal cell-adhesion molecules in the pathogenesis of this group of neurodevelopmental and neuropsychiatric disorders.

    • Kai Wang
    • Haitao Zhang
    • Hakon Hakonarson
    Research
    Nature
    Volume: 459, P: 528-533

  • Laboratory experiments with the brine shrimp Artemia salina illustrate the potential for turbulence generated by the diurnal vertical migrations of aggregations of centimetre-scale zooplankton to affect the physical and biogeochemical structure of oceanic water columns.

    • Isabel A. Houghton
    • Jeffrey R. Koseff
    • John O. Dabiri
    Research
    Nature
    Volume: 556, P: 497-500

  • Visual anemometry measures winds using observations of associated environmental flow–structure interactions such as swaying trees and flapping flags. This Perspective article outlines opportunities for physics and data science to further develop visual anemometry for renewable energy, urban sustainability and environmental science.

    • John O. Dabiri
    • Michael F. Howland
    • Roni H. Goldshmid
    Reviews
    Nature Reviews Physics
    Volume: 5, P: 597-611

  • Hair-like sensors are suspected to aid fish navigation in complex environments. Laboratory experiments and computational simulations reveal how these sensors can detect water flow to direct the swimming responses of fish. See Letter p.445

    • John O. Dabiri
    News & Views
    Nature
    Volume: 547, P: 406-407

  • Nawroth et al. combine rat cardiomyocytes and silicone polymer to make a jellyfish replica that mimics the propulsive behavior of its live counterpart. The design principles guiding this feat may facilitate tissue engineering of muscular organs.

    • Janna C Nawroth
    • Hyungsuk Lee
    • Kevin Kit Parker
    Research
    Nature Biotechnology
    Volume: 30, P: 792-797