Journal: Bioinspiration & Biomimetics

Abbreviation

Bioinspir Biomim

Publisher

IOP Publishing

Journal Volumes

ISSN

1748-3182
1748-3190

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Filters

2010 - 2019102020 - 20243
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Publications 1 - 10 of 13
  • Magnetic polymer composite artificial bacterial flagella
    Item type: Journal Article
    Peyer, Kathrin E.; Siringil, Erdem C.; Zhang, Li; et al. (2014)
    Bioinspiration & Biomimetics
  • Bamboo's tissue structure facilitates large bending deflections
    Item type: Journal Article
    Chen, Qi; Razi, Hajar; Schlepütz, Christian M.; et al. (2021)
    Bioinspiration & Biomimetics
    Bamboo is becoming increasingly popular as an engineering material and source of bio-inspiration for instance in architecture and for the manufacture of a variety of woven products. Besides the properties of bamboo products for construction purposes, the bending deformability of thin bamboo slivers is of interest, as it appears that extraordinary large deflection can be achieved. To unravel the underlying mechanisms that may contribute to the high deformability at the tissue and cell level, bending deflection tests and additional in situ experiments were performed to record the deflection of bamboo slivers in dependence of the tissue composition and the deformations of individual cells. For the latter, a simple bending deflection setup was used employing micro-CT measurements to analyze the deformation of individual parenchyma cells (PCs), fiber bundles and vessel elements at different stages of bending deformation of the bamboo slivers. The results showed that the degree of displacement and the characteristic fracture behavior strongly depend on the volume fractions of PCs and fibres determined by the position in the bamboo culm. For slivers with a sufficiently high fibre volume content, the very high bending deformability could be facilitated by the deformation of PCs, which are squeezed between the fibre bundles during increasing bending deflection.
  • Fish-like propulsion of an airship with planar membrane dielectric elastomer actuators
    Item type: Journal Article
    Jordi, Christa; Michel, Silvain; Fink, Erich (2010)
    Bioinspiration & Biomimetics
  • Programmable snapping composites with bio-inspired architecture
    Item type: Journal Article
    Schmied, Jascha U.; Le Ferrand, Hortense; Ermanni, Paolo; et al. (2017)
    Bioinspiration & Biomimetics
  • Enhancement of finger motion range with compliant anthropomorphic joint design
    Item type: Journal Article
    Culha, Utku; Iida, Fumiya (2016)
    Bioinspiration & Biomimetics
  • Goal directed multimodal locomotion through coupling between mechanical and attractor selection dynamics
    Item type: Journal Article
    Nurzaman, Surya; Yu, Xiaoxiang; Kim, Yongjae; et al. (2014)
    Bioinspiration & Biomimetics
  • Synchronisation through learning for two self-propelled swimmers
    Item type: Journal Article
    Novati, Guido; Verma, Siddhartha; Alexeev, Dmitry; et al. (2017)
    Bioinspiration & Biomimetics
  • Wall-climbing performance of gecko-inspired robot with soft feet and digits enhanced by gravity compensation
    Item type: Journal Article
    Wang, Bingcheng; Weng, Zhiyuan; Wang, Haoyu; et al. (2024)
    Bioinspiration & Biomimetics
    Gravitational forces can induce deviations in body posture from desired configurations in multi-legged arboreal robot locomotion with low leg stiffness, affecting the contact angle between the swing leg's end-effector and the climbing surface during the gait cycle. The relationship between desired and actual foot positions is investigated here in a leg-stiffness-enhanced model under external forces, focusing on the challenge of unreliable end-effector attachment on climbing surfaces in such robots. Inspired by the difference in ceiling attachment postures of dead and living geckos, feedforward compensation of the stance phase legs is the key to solving this problem. A feedforward gravity compensation (FGC) strategy, complemented by leg coordination, is proposed to correct gravity-influenced body posture and improve adhesion stability by reducing body inclination. The efficacy of this strategy is validated using a quadrupedal climbing robot, EF-I, as the experimental platform. Experimental validation on an inverted surface (ceiling walking) highlights the benefits of the FGC strategy, demonstrating its role in enhancing stability and ensuring reliable end-effector attachment without external assistance. In the experiment, robots without FGC only completed 3 out of 10 trials, while robots with FGC achieved a 100% success rate in the same trials. The speed was substantially greater with FGC, achieving 9.2 mm s−1 in the trot gait. This underscores the proposed potential of the FGC strategy in overcoming the challenges associated with inconsistent end-effector attachment in robots with low leg stiffness, thereby facilitating stable locomotion even at an inverted body attitude.
  • A dragline-forming mobile robot inspired by Spiders
    Item type: Journal Article
    Wang, Liyu; Culha, Utku; Iida, Fumiya (2014)
    Bioinspiration & Biomimetics
  • Asymmetric fin shape changes swimming dynamics of ancient marine reptiles' soft robophysical models
    Item type: Journal Article
    Sprumont, Hadrien; Allione, Federico; Schwab, Fabian; et al. (2024)
    Bioinspiration & Biomimetics
    Animals have evolved highly effective locomotion capabilities in terrestrial, aerial, and aquatic environments. Over life's history, mass extinctions have wiped out unique animal species with specialized adaptations, leaving paleontologists to reconstruct their locomotion through fossil analysis. Despite advancements, little is known about how extinct megafauna, such as the Ichthyosauria one of the most successful lineages of marine reptiles, utilized their varied morphologies for swimming. Traditional robotics struggle to mimic extinct locomotion effectively, but the emerging soft robotics field offers a promising alternative to overcome this challenge. This paper aims to bridge this gap by studying Mixosaurus locomotion with soft robotics, combining material modeling and biomechanics in physical experimental validation. Combining a soft body with soft pneumatic actuators, the soft robotic platform described in this study investigates the correlation between asymmetrical fins and buoyancy by recreating the pitch torque generated by extinct swimming animals. We performed a comparative analysis of thrust and torque generated by Carthorhyncus, Utatsusaurus, Mixosaurus, Guizhouichthyosaurus, and Ophthalmosaurus tail fins in a flow tank. Experimental results suggest that the pitch torque on the torso generated by hypocercal fin shapes such as found in model systems of Guizhouichthyosaurus, Mixosaurus and Utatsusaurus produce distinct ventral body pitch effects able to mitigate the animal's non-neutral buoyancy. This body pitch control effect is particularly pronounced in Guizhouichthyosaurus, which results suggest would have been able to generate high ventral pitch torque on the torso to compensate for its positive buoyancy. By contrast, homocercal fin shapes may not have been conducive for such buoyancy compensation, leaving torso pitch control to pectoral fins, for example. Across the range of the actuation frequencies of the caudal fins tested, resulted in oscillatory modes arising, which in turn can affect the for-aft thrust generated.
Publications 1 - 10 of 13