Bio-inspired magnetic-driven folded diaphragm for biomimetic robot

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: Jan. 11, 2023

Functional soft materials, exhibiting multiple types of deformation, have shown their potential/abilities to achieve complicated biomimetic behaviors (soft robots). Inspired by the locomotion earthworm, which is conducted through contraction and stretching between body segments, this study proposes a type one-piece-mold folded diaphragm, consisting structure segments with radial magnetization property, large 3D bi-directional deformation inside-volume change capability subjected low homogeneous magnetically driving field (40 mT). Moreover, appearance based on proposed magnetic-driven diaphragm able be easily customized desired ones then implanted into different untethered robotic systems as drivers. To verify above points, we design pump providing unique properties lightweight, powerful output rapid response, robot including bio-earthworm crawling swimming inspired squid exhibit flexible excited single magnetic fields.

Language: Английский

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Adaptive Magnetoactive Soft Composites for Modular and Reconfigurable Actuators

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(26)

Published: March 27, 2023

Abstract Magnetoactive soft materials, typically composed of magnetic particles dispersed in a polymer matrix, are finding many applications robotics due to their reversible and remote shape transformations under fields. To achieve complex transformations, anisotropic, heterogeneous magnetization profiles must be programmed the material. However, once assembled, actuators cannot easily reconfigured, repurposed, or repaired, which limits application, durability, versatility design. Here, magnetoactive composites developed from squid‐derived biopolymers NdFeB microparticles with tunable ferromagnetic thermomechanical properties. By leveraging crosslinking nanostructures biopolymer healing‐assisted assembly process is that allows for on‐demand reconfiguration reprogramming composites. This concept multi‐material modular demonstrated programmable deformation modes, self‐healing properties recover function after mechanical damage, shape‐memory behavior lock preferred configuration un‐actuated catch states. These dynamic can enable design new types actuators, not only eliminating device vulnerabilities through healing repair but also by providing adaptive mechanisms reconfigure on demand.

Language: Английский

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A Torsion-Bending Antagonistic Bistable Actuator Enables Untethered Crawling and Swimming of Miniature Robots

Research, Journal Year: 2023, Volume and Issue: 6

Published: Jan. 1, 2023

Miniature robots show great potential in exploring narrow and confined spaces to perform various tasks, but many applications are limited by the dependence of these on electrical or pneumatic tethers power supplies outboard. Developing an onboard actuator that is small size powerful enough carry all components a major challenge eliminate need for tether. Bistability can trigger dramatic energy release during switching between 2 stable states, thus providing promising way overcome intrinsic limitation insufficient actuators. In this work, antagonistic action torsional deflection bending lamina emergent joint utilized achieve bistability, yielding buckling-free bistable design. The unique configuration design enables integrating single electroactive artificial muscle structure form compact, self-switching actuator. A low-voltage ionic polymer-metal composites employed, capable generating instantaneous angular velocity exceeding 300 °/s 3.75-V voltage. Two untethered robotic demonstrations using presented, including crawling robot (gross weight 2.7 g, actuator, battery, on-board circuit) generate maximum 40 mm/s swimming equipped with pair origami-inspired paddles swims breaststroke. shows achieving autonomous motion fully miniature robots.

Language: Английский

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Reconfigurable Liquid‐Bodied Miniature Machines: Magnetic Control and Microrobotic Applications

Advanced Intelligent Systems, Journal Year: 2023, Volume and Issue: 6(2)

Published: May 24, 2023

Soft miniature machines demonstrate multimodal actuation and morphology change capabilities in narrow spaces smaller than their dimension. The wirelessly controlled soft‐bodied features make them promising candidates for microrobotic manipulation targeted operation a noninvasive manner. Liquid‐bodied machine offers an ultrasoft body with extreme deformability owing to its fluid nature, enabling adaptive navigation smooth contact objects environmental restrictions. Over the last decade of development, significant research progress has been achieved controlling liquid‐bodied diverse applications. Herein, overview recent results magnetic control methods applications is provided. Considering mechanisms application challenges, ferrofluid‐based, liquid metal‐based, marble‐based are mainly discussed brief discussion on droplet‐based machines. connection between highlighted detailed analysis machine–object machine–environment interactions. current challenges opportunities outlined, aiming at designing intelligent machine‐based systems promoting development small‐scale robotics.

Language: Английский

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Electrodeposited Superhydrophilic‐Superhydrophobic Composites for Untethered Multi‐Stimuli‐Responsive Soft Millirobots

Advanced Science, Journal Year: 2023, Volume and Issue: 10(23)

Published: June 8, 2023

To navigate in complex and unstructured real-world environments, soft miniature robots need to possess multiple functions, including autonomous environmental sensing, self-adaptation, multimodal locomotion. However, achieve multifunctionality, artificial should respond stimuli, which can be achieved by multimaterial integration using facile flexible fabrication methods. Here, a strategy for fabricating millirobots that uses electrodeposition integrate two inherently non-adherable materials, superhydrophilic hydrogels superhydrophobic elastomers, together via gel roots is proposed. This approach enables the authors electrodeposit sodium alginate hydrogel onto laser-induced graphene-coated elastomer, then laser cut into various shapes function as multi-stimuli-responsive (MSRs). Each MSR six different stimuli autonomously transform their shapes, mimic flowers, vines, mimosas, flytraps. It demonstrated MSRs climb slopes, switch locomotion modes, self-adapt between air-liquid transport cargo environments. creating untethered have such self-propulsion, paving way future operation

Language: Английский

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