Recent progress in flexible magnetoelectric composites and devices for next generation wearable electronics

Nano Energy, Journal Year: 2023, Volume and Issue: 115, P. 108733 - 108733

Published: July 22, 2023

Language: Английский

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Triple-Responsive Soft Actuator with Plastically Retentive Deformation and Magnetically Programmable Recovery

ACS Nano, Journal Year: 2023, Volume and Issue: 17(23), P. 24042 - 24054

Published: Nov. 21, 2023

Multistimuli responsiveness and programmable shape recovery are crucial for soft actuators in robotics, electronics, wearables. However, existing strategies actuation cannot attain power-free retention after removing the external energy supply. Here, a self-assembled density deposition method was developed to fabricate an electrothermal-NIR-magnetic triple-response actuator which composed of cellulose nanofiber/poly(vinyl alcohol)/liquid metal (CNF/PVA/LM) magnetic polydimethylsiloxane (MPDMS) layer. Interestingly, large deformation can be controllably fixed temporary configuration will recovered under field due thermal-plastic transferring behavior CNF/PVA/LM. Rolling robot prepared based on exhibits good ability avoid obstacles. In addition, object handling release capabilities carrier robots demonstrate that this approach contribute better understanding how more rationally utilize various stimuli application purposes.

Language: Английский

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Hard magnetics and soft materials—a synergy

Smart Materials and Structures, Journal Year: 2024, Volume and Issue: 33(4), P. 043001 - 043001

Published: Feb. 21, 2024

Abstract Hard-magnetic soft materials (hMSMs) are smart composites that consist of a mechanically polymer matrix impregnated with hard magnetic filler particles. This dual-phase composition renders them exceptional magneto-mechanical properties allow to undergo large reversible deformations under the influence external fields. Over last decade, hMSMs have found extensive applications in robotics, adaptive structures, and biomedical devices. However, despite their widespread utility, they pose considerable challenges fabrication characterization owing multi-phase nature, miniature length scales, nonlinear material behavior. Although noteworthy attempts been made understand coupled rudimentary concepts inter-phase interactions give rise mechanical nonlinearity remain insufficiently understood, this impedes further advancements. holistic review addresses these standalone bridges gaps by providing thorough examination myriad techniques, applications, experimental, modeling approaches. Specifically, presents wide spectrum ranging from traditional molding cutting-edge four-dimensional printing, unbounded prospects diverse fields research. The covers various approaches, including continuum frameworks encompassing phenomenological homogenization models, as well microstructural models. Additionally, it emerging techniques like machine learning-based context hMSMs. Finally, expansive landscape promising systems is provided for better understanding prospective

Language: Английский

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Self-healing and hyperelastic magneto-iono-elastomers through molecular confinement of magnetic anions

Science Advances, Journal Year: 2025, Volume and Issue: 11(1)

Published: Jan. 1, 2025

Magneto-responsiveness in living organisms, exemplified by migratory birds navigating vast distances, offers inspiration for soft robots and human-computer interfaces. However, achieving both high magneto-responsiveness resilient mechanical properties synthetic materials has been challenging. Here, we develop magneto-iono-elastomers (MINEs), combining exceptional magnetization [2.6 emu (electromagnetic units)/g] with hyperelasticity self-healability. Such a MINE consists of magnetic ionic liquid (MIL; [Emim][FeCl 4 ]) urethane group–based polymer that can distinctively confine anions through strong intermolecular interactions, including potential hydrogen bonds metal-coordination bonds. This confinement enables MIL loading (80 wt %) while maintaining structure integrity, resulting conductivity exceeding 10 −3 S/cm. Furthermore, the synergistic interplay these reversible MINEs contributes to an outstanding elastic recovery surpasses 99%, alongside good self-healing capabilities. The unique combination attributes positions as promising candidate diverse magnetoelectronic applications, encompassing wearable strain sensors, contactless magneto-responsive electronics, see-through touch panels, carriers.

Language: Английский

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High‐Load Shape Memory Microgripper with Embedded Resistive Heating and Magnetic Actuation

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 3, 2025

Abstract Magnetically actuated soft grippers find extensive applications in robotics due to their rapid response, biological safety, and wireless control capabilities. However, these systems often require a continuously applied magnetic field during both the capture release processes, which reduces load capacity makes gripping ferromagnetic objects challenging. Here, an electrothermal‐magnetic shape memory (EM‐SMP) microgripper is developed. By incorporating Fe₃O₄ particles into polymer (SMP) embedding resistive wires, can respond electric current field. The high thermal conductivity of composite material, coupled with microscale dimensions achieved via femtosecond laser processing, significantly enhances response speed (≈0.9 s). only open gripper, while closure realized through electrothermal‐triggered effect, allowing sequential safely grip delicate without interference. Upon cooling, closed state SMP gripper locks place energy consumption. Furthermore, claw‐shaped design allows enclose larger grasping, thereby improving load‐to‐weight ratio (≈2380). This demonstrates broad application potential, effectively performing grasp tasks across diverse materials, sizes, shapes, states, extreme environmental conditions (acidic alkaline).

Language: Английский

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Optomagnetic Coordination Helical Robot with Shape Transformation and Multimodal Motion Capabilities

Nano Letters, Journal Year: 2024, Volume and Issue: 24(9), P. 2885 - 2893

Published: Feb. 26, 2024

Soft robots with magnetic responsiveness exhibit diverse motion modes and programmable shape transformations. While the fixed magnetization configuration facilitates coupling control of robot posture motion, it limits individual to some extent. This poses a challenge in independently controlling robot's transformation restricting its versatile applications. research introduces multifunctional helical responsive both light magnetism, segregating from movements. Light fields assist shaping, achieving 78% maximum diameter shift. Magnetic guide multimodal motions, encompassing rotation, flipping, rolling, spinning-induced propulsion. By locomotion on demand, gain enhanced flexibility. innovation allows them tightly grip wirelessly transport designated payloads, showcasing potential applications drug delivery, soft grippers, chemical reaction platforms. The unique combination structural design methods holds promise for intelligent future.

Language: Английский

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Biomimetic Stimulus Responsiveness: From Materials Design to Device Integration

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(33)

Published: April 18, 2024

Abstract Intelligent actuators have attracted intensive attention due to their broad application scenarios, ranging from precision manufacturing and autonomous robotics adaptive medical devices. Therein, simplifying structure design streamlining fabrication processes for responsive materials is crucial achieving multifunctionality in intelligent actuators. Drawing inspiration nature, diverse stimuli‐responsive been developed, enabling the creation of a spectrum Herein, study aims provide systematic overview smart with different based on biomimetic strategies. The commences by describing typical stimulus‐response organisms subsequently categorizing nascent materials, summarizing respective mechanisms. Potential applications integrated into all‐in‐one systems are presented grippers, soft robots, sensors. Finally, ends an advancement summary together personal insight current challenges future directions.

Language: Английский

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Macromolecular radical networks for organic soft magnets

Matter, Journal Year: 2024, Volume and Issue: 7(4), P. 1503 - 1516

Published: Jan. 15, 2024

Language: Английский

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Poly(lactic acid)/polycaprolactone-based self-programmed photothermal responsive shape memory polymers

Reactive and Functional Polymers, Journal Year: 2024, Volume and Issue: 202, P. 105990 - 105990

Published: June 17, 2024

Language: Английский

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Self‐healing polymers for soft actuators and robots

Journal of Polymer Science, Journal Year: 2023, Volume and Issue: 62(14), P. 3137 - 3155

Published: Nov. 23, 2023

Abstract Advances in artificial intelligence technology bring a rising demand on stimuli responsive actuating materials and soft actuators. By the virtue of easy deformation mechanical resilience, polymers with unique properties like shape‐memory, electro/magneto‐active, thermal/humidity/chemical‐responsiveness have emerged as promising candidates for robotics. Damage tolerance or degree self‐healing ability improves robots endowed such longevity, provides safeguards function potentially reduce costs. The combination stimuli‐responsive actuation involves elaborate supramolecular chemical physical structure designs, being challenging topic within field robotics thus intriguing wide research interests. This review aims to discuss some highlights convenient micro‐nanostructures dynamic bonds chemistry last 5 years, that further give actuators recovery mechanic function, improved comprehensive properties. Through most remarkable paradigms, order organization liquid crystal mesogenic units, functional micro‐nanofillers, hierarchical gradient interfaces, etc. are outlined. Finally, perspectives main challenges self‐healable summarized. It is anticipated this will provide scientists insights guidance future innovative field.

Language: Английский

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