Advances in 3D/4D printing of mechanical metamaterials: From manufacturing to applications

Composites Part B Engineering, Год журнала: 2023, Номер 254, С. 110585 - 110585

Опубликована: Фев. 4, 2023

Язык: Английский

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Materials-Driven Soft Wearable Bioelectronics for Connected Healthcare

Chemical Reviews, Год журнала: 2024, Номер 124(2), С. 455 - 553

Опубликована: Янв. 4, 2024

In the era of Internet-of-things, many things can stay connected; however, biological systems, including those necessary for human health, remain unable to connected global Internet due lack soft conformal biosensors. The fundamental challenge lies in fact that electronics and biology are distinct incompatible, as they based on different materials via functioning principles. particular, body is curvilinear, yet typically rigid planar. Recent advances design have generated tremendous opportunities wearable bioelectronics, which may bridge gap, enabling ultimate dream healthcare anyone, anytime, anywhere. We begin with a review historical development healthcare, indicating significant trend healthcare. This followed by focal point discussion about new design, particularly low-dimensional nanomaterials. summarize material types their attributes designing bioelectronic sensors; we also cover synthesis fabrication methods, top-down, bottom-up, combined approaches. Next, discuss energy challenges progress made date. addition front-end devices, describe back-end machine learning algorithms, artificial intelligence, telecommunication, software. Afterward, integration systems been applied various testbeds real-world settings, laboratories preclinical clinical environments. Finally, narrate remaining conjunction our perspectives.

Язык: Английский

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3D printing of magneto-active smart materials for advanced actuators and soft robotics applications

European Polymer Journal, Год журнала: 2024, Номер 205, С. 112718 - 112718

Опубликована: Янв. 2, 2024

In the contemporary era, novel manufacturing technologies like additive (AM) have revolutionized different engineering sectors including biomedical, aerospace, electronics, etc. Four-dimensional (4D) printing aka AM of smart materials is gaining popularity among scientific community, which has excellent ability to make soft structures such as robots, actuators, and grippers. These are developed by applying various stimuli pH, temperature, magnetic field, many combinations onto materials. Stimuli in 3D permit shape-morphing behaviors bending, twisting, folding, swelling, rolling, shrinking, origami, or locomotion. A wide variety can be fabricated through incorporation hard particles into resulting magneto-active (MASMs). With this integration, magneto-thermal coupling actuation allows diverse magneto-deformations, facilitating development personalized devices that capable enhanced deformation. review, guidelines provided on for MASMs polymers (MAPs), composites, hydrogels (MAHs) booming flexible wearable biomimetic devices. Moreover, 3D-printed robotics an outstanding capacity adapt complicated situations advanced actuating applications. Finally, some current challenges emerging areas exciting technology been proposed. Lastly, it anticipated technological advancements developing intelligent will a significant impact design real-world

Язык: Английский

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Piezoresistive Pressure Sensor Based on a Conductive 3D Sponge Network for Motion Sensing and Human–Machine Interface

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(2), С. 3131 - 3140

Опубликована: Янв. 5, 2023

Flexible sensors have attracted increasing attention owing to their important applications in human activity monitoring, medical diagnosis, and human–machine interaction. However, the rational design of low-cost with desirable properties (e.g., high sensitivity excellent stability) extended is still a great challenge. Herein, simple cost-effective strategy reported by immersing polyurethane (PU) sponge graphene oxide solution followed situ chemical reduction construct reduced (RGO)-wrapped PU sensor. Ascribed compressive resilience an electrically conductive RGO layer, constructed flexible sensor exhibits satisfactory sensing performance (17.65 kPa–1) low-load range (0–3.2 kPa), wide compression strain (0–80%), reliable stability (8000 cycles). In addition, these can be successfully applied monitor movements identify weight objects. Through use array integrated signal acquisition circuit, reasonably designed realize tactile feedback via mapping real-time spatial distribution pressure complicated tasks show potential electronic pianos, skin, remote control home electronics.

Язык: Английский

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Multimodal Soft Robotic Actuation and Locomotion

Advanced Materials, Год журнала: 2024, Номер 36(19)

Опубликована: Фев. 2, 2024

Diverse and adaptable modes of complex motion observed at different scales in living creatures are challenging to reproduce robotic systems. Achieving dexterous movement conventional robots can be difficult due the many limitations applying rigid materials. Robots based on soft materials inherently deformable, compliant, adaptable, adjustable, making robotics conducive creating machines with complicated actuation gaits. This review examines mechanisms modalities deformation that respond various stimuli. Then, strategies composite considered build toward actuators combine multiple for sophisticated movements. Examples across literature illustrate development as free-moving, entirely soft-bodied locomotion gaits via careful manipulation external The further highlights how application functional into components enhances their locomotive abilities. Finally, taking advantage shape-morphing properties materials, reconfigurable have shown capacity adaptive enable transition environments optimal efficiency. Overall, varied multimodal robots, positioning make real-world applications intricate tasks.

Язык: Английский

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Photocontrollable Elongation Actuation of Liquid Crystal Elastomer Films with Well‐Defined Crease Structures

Advanced Materials, Год журнала: 2023, Номер 35(36)

Опубликована: Июль 8, 2023

Although liquid crystal elastomers (LCEs) have demonstrated various applications in artificial muscles and soft robotics, their inherent flexibility orientation-dependent forces limit functions. For instance, LCEs can sustain a high actuation force when they contract but cannot elongate to drive loads with large displacements. In this study, it is that photocontrollable elongation strain be achieved polydomain by programming the crease structures well-defined order couple forces. Efficient photoactuation without overheating-induced damage materials favored, based on well-designed photosensitive molecular switch crosslinker via synergy of photochemical photothermal effects. The LCE actuator jack up heavy loads, freely, back manipulate distant objects. Theoretical analysis finite element simulation deformation energy during process reveals trade-off between abilities jacking-up withstanding load. More importantly, study simplifies design single material functions only other robotic devices assembly multiple modules, thus providing strategy for surpassing instinctive properties conventional expand robotics.

Язык: Английский

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The design, manufacture and application of multistable mechanical metamaterials-a state-of-the-art review

International Journal of Extreme Manufacturing, Год журнала: 2023, Номер 5(4), С. 042013 - 042013

Опубликована: Сен. 13, 2023

Abstract Multistable mechanical metamaterials are a type of with special features, such as reusability, energy storage and absorption capabilities, rapid deformation, amplified output forces. These usually realized by series and/or parallel bistable units. They can exhibit multiple stable configurations under external loads be switched reversely among each other, thereby realizing the reusability offering broad engineering applications. This paper reviews latest research progress in design strategy, manufacture application multistable metamaterials. We divide structures into three categories based on their basic element types provide criterion bistability. Various manufacturing techniques to fabricate these introduced, including mold casting, cutting, folding three-dimensional/4D printing. Furthermore, prospects for applications soft driving, computing, wave controlling discussed. Finally, this highlights possible challenges opportunities future investigations. The review aims insights development

Язык: Английский

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Tendon Driven Bistable Origami Flexible Gripper for High-Speed Adaptive Grasping

IEEE Robotics and Automation Letters, Год журнала: 2024, Номер 9(6), С. 5417 - 5424

Опубликована: Апрель 16, 2024

This paper introduces a novel bistable origami flexible gripper, which is based on single-vertex and multi-crease (SVMC) structure that has sxeveral advantages, including simple structure, low cost, strong deformation capacity. design addresses the drawbacks of slow response speed grasping efficiency in traditional gripper models. The established using waterbomb model, relationship between crease angles analyzed by applying geometric spherical triangle to establish kinematic equations. Additionally, potential energy equations SVMC are derived torsion spring parameters determined conducting detailed analysis influence length initial angle storage release processes. In addition, tendon drive system helps provide greater force, promoting efficient stable target when return state. Experimental results show subjected an external trigger force 2.65N, can transition from spreading attitude contracted state within 61.58ms, enabling rapid envelopment target, dropping returning 120ms. These findings suggest proposed significant application high-speed food sorting fruit picking.

Язык: Английский

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From Nature‐Sourced Polysaccharide Particles to Advanced Functional Materials

Advanced Materials, Год журнала: 2024, Номер 36(23)

Опубликована: Фев. 23, 2024

Polysaccharides constitute over 90% of the carbohydrate mass in nature, which makes them a promising feedstock for manufacturing sustainable materials. Polysaccharide particles (PSPs) are used as effective scavengers, carriers chemical and biological cargos, building blocks fabrication macroscopic The biocompatibility degradability PSPs advantageous their uses biomaterials with more environmental friendliness. This review highlights progresses PSP applications advanced functional materials, by describing extraction, preparation, surface functionalization variety groups, polymers, nanoparticles, biologically active species. also outlines PSP-derived well soft robotics, sensing, scavenging, water harvesting, drug delivery, bioengineering. paper is concluded an outlook providing perspectives development

Язык: Английский

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Advanced Design of Fibrous Flexible Actuators for Smart Wearable Applications

Advanced Fiber Materials, Год журнала: 2024, Номер 6(3), С. 622 - 657

Опубликована: Март 22, 2024

Abstract Smart wearables equipped with integrated flexible actuators possess the ability to autonomously respond and adapt changes in environment. Fibrous textiles have been recognised as promising platforms for integrating owing their superior body compliance, lightweight nature, programmable architectures. Various studies related textile smart recently reported. However, review focusing on advanced design of these actuator technologies is lacking. Herein, a timely thorough progress achieved this field over past five years presented. This focuses concepts wearables, covering functional materials, innovative architecture configurations, external stimuli, applications wearables. The primary aspects focus actuating formation techniques architecture, behaviour performance metrics actuators, various challenges next-generation Ultimately, conclusive perspectives are highlighted. Graphical

Язык: Английский

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