The 20-million-year old lair of an ambush-predatory worm preserved in northeast Taiwan

Pan, Yu-Yen; Nara, Masakazu; Löwemark, Ludvig; Miguez‐Salas, Olmo; Gunnarson, Björn E.; Iizuka, Yoshiyuki; Chen, Tzu Tung; Dashtgard, Shahin E.

doi:10.1038/s41598-020-79311-0

Cited by 6 publications

(2 citation statements)

References 40 publications

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“…42,43 There are also many species with tubular organisms that can alternate their body measurements (length and diameter) for either locomotion or prey catching such as bobbit worms (Eunice aphroditois), earthworms, and leeches. 44 Other animals such as snakes or lizards can expand their bodies after swallowing a large-size prey. 45,46 Inspired by such biological growth, we created new SMAM-based soft tubular muscles that could simultaneously induce longitudinal and radial expansion upon pressurization (Fig.…”

Section: Growing Soft Tubular Artificial Muscles For Robotic and Medical Applicationsmentioning

confidence: 99%

Explaining Outcome Differences between Men and Women following Mild Traumatic Brain Injury

Mikolić

Groeniger

Zeldovich

et al. 2021

Journal of Neurotrauma

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Research on soft artificial muscles (SAMs) is rapidly growing, both in developing new actuation ideas and improving existing structures with multifunctionality. The human body has more than 600 muscles that drive organs and joints to achieve desired functions. Inspired by the human muscles, this article presents a new type of SAM fiber formed from twisting and braiding soft hydraulic filament artificial muscles with high aspect ratio, high strain, and high energy efficiency. We systematically investigated the relationship between input pressure and output elongation as well as contraction force of the new muscles using different configurations in terms of an array of single and multiple muscles arranged in nontwisting (or straight), twisting, and braiding variants. Experimental results revealed that the twisting and braiding configurations greatly enhanced the muscle elongation and generated force compared with their nontwisting/braiding counterparts. To demonstrate the new muscles' usability, we implemented several muscle variants to bidirectionally manipulate 3D-printed human fingers and elbow, mimicking the human upper limb with a full range of motion. We also created a bioinspired growing soft tubular muscle that could simultaneously exert longitudinal and radial expansion upon pressurization, similar to that of auxetic metamaterial structures. The new growing soft tubular muscles were experimentally validated and the results showed that they could be potentially implemented in several emerging applications, including smart compression garments, stent-like supporting devices, and tubular grippers for medical use.

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Section: Growing Soft Tubular Artificial Muscles For Robotic and Medical Applicationsmentioning

confidence: 99%

Explaining Outcome Differences between Men and Women following Mild Traumatic Brain Injury

Mikolić

Groeniger

Zeldovich

et al. 2021

Journal of Neurotrauma

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show abstract

“…), then will leap to capture the optimal prey. [ 43 ] Thus, the Bobbitt worm is quite an excellent model to design soft adaptive grasper, which unfortunately is rarely reported. This is mainly due to the technical challenges of combining the required multi‐functionality, including perception, grasping action, and feedback, etc., within one integrated body structures.…”

Section: Introductionmentioning

confidence: 99%

“Bobbit Worm”‐Inspired Soft Adaptive Grasper with Self‐Generated Triboelectric Force Sensor

Zhu,

Dai,

Wang

et al. 2023

Advanced Sensor Research

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Soft actuators can realize delicate adaptive grasping of fragile and irregularly shaped objects, which are essential in biological and engineering systems. Yet, critical concerns in the frontier soft graspers are insufficient grasping ability and functional limitations. Here, we propose a Bobbit worm‐inspired multimodal‐sensing adaptive soft grasper (MSASG) enabled by harnessing the Miura‐origami skeleton integrated with self‐generated triboelectric force sensors (TFSs). The Miura‐origami skeleton endows the soft grasper a high grasping force while provides an energy‐efficient way to passively embrace an object without extra energy input. A multimodal TFSs with tactile sensing (TFS‐1) and pressure‐feedback (TFS‐2) functions is constructed by directly packaging a pyramid‐pattern elastic film on the Miura‐origami skeleton. The MSASG implement fast grasping or releasing action by evaluating pressures of various approaching prey, including hermit crabs, crickets, and beetle, etc. And its sensitivity greater than 0.18 V mN−1. In particular, the grasping performances and triboelectric sensing capacity can be optimized by modulating topological parameters (crease length, and surface film thickness, etc.), using a combination of theoretical modeling, finite element simulations, and experiments. The bionic design of soft graspers broadens the future applications for versatile human‐robot‐environment interaction scenarios, such as adaptive robots, reconfigurable architectures, medical devices, and deep‐sea explorations.

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Rheology of Mucins

Fischer

2022

Recent Advances in Rheology

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Mucus is a highly glycosylated protein protecting the epidermal cells and can be found in respiratory, gastrointestinal, urogenital, and vaginal tracts of animals and humans. In fish and aquatic invertebrates, mucus can also be found on the ‘outside’ as an antimicrobial barrier and physically protective layer of skin and gills. Mucus is not only the first line of defense but also provides a filtering function for nutrients and gases to pass to the epidermal cell. In this dual role as gateway, mucus is exposed to numerous kinds of external stimuli and varies depending on the organ in chemical composition and thus exhibits different physio-chemical and mechanical properties. For example, mucus-stimuli interaction is studied for food uptake in the gastrointestinal tract, interaction with bacteria and viruses, nanoparticle interaction in the respiratory tract, and filter feeding in marine invertebrates. In this book chapter, the rheological properties of mucus per se and under different environmental exposure will be reviewed and put into perspective to its specific biological tasks. Further, inherent problems related to mucus origin and harvesting as well as appropriate rheological testing methods will be discussed.

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The 20-million-year old lair of an ambush-predatory worm preserved in northeast Taiwan

Cited by 6 publications

References 40 publications

Explaining Outcome Differences between Men and Women following Mild Traumatic Brain Injury

Explaining Outcome Differences between Men and Women following Mild Traumatic Brain Injury

“Bobbit Worm”‐Inspired Soft Adaptive Grasper with Self‐Generated Triboelectric Force Sensor

Rheology of Mucins

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