MEMS Enabled Bendable and Stretchable Silicon Circuits

Lips, Bram; Puers, Robert

doi:10.3390/proceedings2130837

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…Moreover, the asymmetry from the serpentine spring skeleton allows the structure to move with two different modes: by inertial swimming at the interface or coasting near a bottom surface. Serpentine spring structures are well known in the MEMS field to create flexible structures by working with microfabrication techniques (75,76). Although serpentine springs have been implemented in untethered micro-force sensing microrobots to obtain compliant structures (77), such structures have not been included before in a soft robotic living system.…”

Section: Discussionmentioning

confidence: 99%

Biohybrid soft robots with self-stimulating skeletons

et al. 2021

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Bioinspired hybrid soft robots that combine living and synthetic components are an emerging field in the development of advanced actuators and other robotic platforms (i.e., swimmers, crawlers, and walkers). The integration of biological components offers unique characteristics that artificial materials cannot precisely replicate, such as adaptability and response to external stimuli. Here, we present a skeletal muscle–based swimming biobot with a three-dimensional (3D)–printed serpentine spring skeleton that provides mechanical integrity and self-stimulation during the cell maturation process. The restoring force inherent to the spring system allows a dynamic skeleton compliance upon spontaneous muscle contraction, leading to a cyclic mechanical stimulation process that improves the muscle force output without external stimuli. Optimization of the 3D-printed skeletons is carried out by studying the geometrical stiffnesses of different designs via finite element analysis. Upon electrical actuation of the muscle tissue, two types of motion mechanisms are experimentally observed: directional swimming when the biobot is at the liquid-air interface and coasting motion when it is near the bottom surface. The integrated compliant skeleton provides both the mechanical self-stimulation and the required asymmetry for directional motion, displaying its maximum velocity at 5 hertz (800 micrometers per second, 3 body lengths per second). This skeletal muscle–based biohybrid swimmer attains speeds comparable with those of cardiac-based biohybrid robots and outperforms other muscle-based swimmers. The integration of serpentine-like structures in hybrid robotic systems allows self-stimulation processes that could lead to higher force outputs in current and future biomimetic robotic platforms.

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Section: Discussionmentioning

confidence: 99%

Biohybrid soft robots with self-stimulating skeletons

et al. 2021

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Bio-hybrid soft robots with self-stimulating skeletons

Guix

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Patiño

et al. 2020

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Bioinspired hybrid soft robots combining living actuation and synthetic components are an emerging field in the development of advanced actuators and other robotic platforms (i.e. swimmers, crawlers, walkers). The integration of biological components offers unique properties (e.g. adaptability, response to external stimuli) that artificial materials cannot replicate with accuracy, being skeletal and cardiac muscle cells the preferred candidates for providing contractile actuation. Here, we present a skeletal-muscle-based swimming biobot with a 3D-printed serpentine spring skeleton that provides mechanical integrity and self-stimulation during the cell maturation process. The restoring force inherent to the spring system allows a dynamic skeleton compliance upon spontaneous muscle contraction, leading to a novel cyclic mechanical stimulation process that improves the muscle force output without external stimuli. Optimization of the 3D-printed skeletons is carried out by studying the geometrical stiffnesses of different designs via finite element analysis. Upon electrical actuation of the muscle tissue, two types of motion mechanisms are experimentally observed: i) directional swimming when the biobot is at the liquid-air interface and ii) coasting motion when it is near the bottom surface. The integrated compliant skeleton provides both the mechanical self-stimulation and the required asymmetry for directional motion, displaying its maximum velocity at 5 Hz (800 micrometer second−1, 3 body length second−1). This skeletal muscle-based bio-hybrid swimmer attains speeds comparable to cardiac-based bio-hybrid robots and outperforms other muscle-based swimmers. The integration of serpentine-like structures in hybrid robotic systems allows self-stimulation processes that could lead to higher force outputs in current and future biomimetic robotic platforms.

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MEMS Enabled Bendable and Stretchable Silicon Circuits

Cited by 2 publications

References 6 publications

Biohybrid soft robots with self-stimulating skeletons

Biohybrid soft robots with self-stimulating skeletons

Bio-hybrid soft robots with self-stimulating skeletons

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