Advances in Electrical Materials for Bone and Cartilage Regeneration: Developments, Challenges, and Perspectives

Advanced Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 14, 2025

Abstract Severe bone and cartilage defects caused by trauma are challenging to treat, often resulting in poor outcomes. An endogenous electric field (EnEF) is crucial for regeneration, making electrical materials a promising therapy. This review provides comprehensive overview of the role bioelectric signals cells, alongside recent advancements biomaterials, with particular emphasis on nanogenerators, piezoelectric materials, triboelectric scaffolds, zwitterionic hydrogels. It further investigates impact these biomaterials as well applications both exogenous stimulation (ES) mechanisms underlying ES‐induced cellular molecular responses. Finally, underscores future directions ES systems tissue engineering, emphasizing critical importance integrating structural integrity, mechanical properties, signal delivery into intelligent implantable scaffolds.

Language: Английский

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An Agile 3 cm‐Scale Quadruped Piezoelectric Robot with a Rigid Ring‐Shaped Structure

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

Published: Jan. 13, 2025

Abstract Miniature piezoelectric robots can perform various tasks in narrow spaces, due to their small sizes and agile motions. However, there is key challenge of reconciling large load capacity with motions, which limits the integration functional units. In this work, a miniature quadruped robot (AQPR) inspired by hard‐shell animals proposed. The prominent feature AQPR rigid ring structure, be utilized achieve its high stiffness; degeneracy different vibration modes used generate multi‐dimensional trajectories at foot, linear rotational A prototype size 30 × 14.3 mm 3 weight 6.9 g produced. experimental results show that maximum speed 255 s −1 1265°s , respectively. capacities reach 200 (≈30 times self‐weight). By using an impulse signal, resolutions motions 0.25 µm 32.7 µrad, Benefiting from size, capacity, resolution, agile, fast speed, shows great potential for applying micro‐operations such as large‐scale wafer transport detection.

Language: Английский

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Developments and Challenges of Miniature Piezoelectric Robots: A Review

Advanced Science, Journal Year: 2023, Volume and Issue: 10(36)

Published: Oct. 27, 2023

Miniature robots have been widely studied and applied in the fields of search rescue, reconnaissance, micromanipulation, even interior human body benefiting from their highlight features small size, light weight, agile movement. With development new smart materials, many functional actuating elements proposed to construct miniature robots. Compared with other elements, piezoelectric advantages compact structure, high power density, fast response, resolution, no electromagnetic interference, which make them greatly suitable for robots, capture attentions favor numerous scholars. In this paper, a comprehensive review recent developments (MPRs) is provided. The MPRs are classified summarized detail three aspects operating environment, structure element, working principle. addition, manufacturing methods materials MPRs, as well application situations, sorted out outlined. Finally, challenges future trends evaluated discussed. It hoped that will be great assistance determining appropriate designs guiding provide destination board researchers interested MPRs.

Language: Английский

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Review on Multiple‐Degree‐of‐Freedom Cross‐Scale Piezoelectric Actuation Technology

Advanced Intelligent Systems, Journal Year: 2024, Volume and Issue: 6(6)

Published: Jan. 29, 2024

Piezoelectric actuation technology has been widely used in various precise‐oriented fields. Its notable advantages include high resolution, rapid response speed, output force with density, and immunity to electromagnetic interference. Characteristics of cross‐scale multiple‐degree‐of‐freedom (multi‐DOF) motions are utmost importance the context micro‐/nanopositioning technology. For decades, researchers have working develop piezoelectric devices that exploit these important properties. In this review, a comprehensive review recent research efforts field multi‐DOF drive is provided. To commence, it provides an in‐depth exploration unique associated actuation, demonstrating them through comparative analyses alternative methods. Subsequently, complexity motion introduced, classified detail. Furthermore, practical applications systematically elucidated, highlighting its versatility suitability real‐world environments. Finally, discussion addresses challenges encountered provided, prospective directions for further developments outlined. This scholarly contribution plays role guiding future innovative initiatives.

Language: Английский

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Design, manufacture, and two-step calibration of a piezoelectric parallel microrobot at the millimeter scale for micromanipulation

Mechanism and Machine Theory, Journal Year: 2025, Volume and Issue: 206, P. 105928 - 105928

Published: Jan. 21, 2025

Language: Английский

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Octopus-crawling-inspired highly agile miniature piezoelectric robot with strong load-bearing capacity

International Journal of Mechanical Sciences, Journal Year: 2025, Volume and Issue: unknown, P. 110130 - 110130

Published: March 1, 2025

Language: Английский

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A miniature piezoelectric actuator with fast movement and nanometer resolution

International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 273, P. 109249 - 109249

Published: March 30, 2024

Language: Английский

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Integrated high-frequency piezoelectric transducer within radial critical dimension of piezoceramics

International Journal of Mechanical Sciences, Journal Year: 2024, Volume and Issue: 269, P. 109070 - 109070

Published: Feb. 1, 2024

Language: Английский

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A miniature multi-DOF ring-shaped piezoelectric actuator capable of driving both flat and spherical movers

Ceramics International, Journal Year: 2024, Volume and Issue: 50(23), P. 51804 - 51811

Published: Feb. 20, 2024

Language: Английский

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Development of a Highly Adaptive Miniature Piezoelectric Robot Inspired by Earthworms

Advanced Science, Journal Year: 2024, Volume and Issue: 11(29)

Published: June 5, 2024

Abstract Miniature resonant piezoelectric robots have the advantages of compact structure, fast response, high speed, and easy control, which attracted interest many scholars in recent years. However, usually suffer from problem poor adaptability due to micron‐level amplitude at feet. Inspired by fact that earthworms actuation trajectories all around their bodies move flexibly under ground, a miniature robot with circumferentially arranged driving feet improve is proposed. Notably, longitudinal‐vibration‐compound principle multilegged collaboration designed achieve robot, similar earthworms. The structure operating are simulated finite element method, prototype fabricated. weighs 22.7 g has dimensions 35.5 × 36.5 47 mm 3 . tethered an ultrasonic power supply, experimental results show speed reaches 179.35 s −1 exciting signal frequency 58.5 kHz voltage 200 V p‐p High achieved proposed it can on flat, fold, concave, convex surfaces, even inclined or rotating tube.

Language: Английский

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