4D Printing of Electrically Activated Reversible Deformation Composite Actuators DOI Open Access
Nan Wang, Xingzhi Xiao, Tingting Liu

et al.

Advanced Materials Technologies, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 23, 2024

Abstract 4D printing of shape memory polymers combines smart materials and 3D technology enabling transformations in shape, properties, functionalities. However, existing research predominantly addresses unidirectional deformation, necessitating the application external force for reprogramming after each deformation. This limitation impedes realization continuous reversible posing challenges to meet demands deformation complex scenarios. study introduces an innovative method fabricating electrically activated composite actuators by printing. The actuator's structure comprises conductive ink PEEK. Upon current excitation, actuator attains controlled attributed electro‐thermal sintering properties ink, combined with effect phase transition performance is validated subjecting varying high‐low excitations, modifying excitation circuit's configuration, refining PEEK process. Concurrently, evaluated through cyclic excitation. Additionally, inchworm‐like crawling robot fabricated demonstrate validation, achieving a speed exceeding 8 mm min −1 . technique developed this expands potential applications fields such as actuators, soft robotics, deployable structures.

Language: Английский

Recent Advances in 4D‐Printed Shape Memory Actuators DOI
Yusuf Olatunji Waidi

Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Abstract 4D printing, which combines the design freedom of 3D printing with responsiveness smart materials, is revolutionizing creation active structures. These structures can change shape in response to external stimuli, paving way for advancements robotics, biomedicine, and beyond. However, a comprehensive review article highlighting recent printed memory actuators (SMAAs) lacking. This explores exciting potential intelligent SMAAs. It examines concept materials used, like shape‐memory polymers (SMPs), alloys (SMAs), polymer composites (SMPCs). then dives into compatible techniques principles achieving programmed changes. Different categories SMAAs are explored, showcasing their applications diverse fields. The concludes by discussing challenges future directions, emphasizing massive creating next generation actuators, making it valuable resource researchers field.

Language: Английский

Citations

1
Review on the 3D printing technology and application of magnetic materials: Material-Process-Structure-Application DOI
Haorui Zhai, Xiaodong Li, Shuzhou Yu

et al.

Composites Part B Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112387 - 112387

Published: March 1, 2025

Language: Английский

Citations

1
Advances in 4D printing of biodegradable photopolymers DOI Creative Commons
Yue Ma, Chih‐Jen Shih, Yinyin Bao

et al.

Deleted Journal, Journal Year: 2024, Volume and Issue: 2(3)

Published: June 5, 2024

Abstract Over the past decade, 4D printing has revolutionized field of advanced manufacturing by fabricating structures that dynamically respond to environmental stimuli. During this process, shape‐memory polymers (SMPs) stand out, enabling transformations triggered temperature, light, or other factors, and show great potential for applications in biomedicine beyond. Notably, biodegradable SMPs offer a compelling advantage medical devices due their ability adapt within body's temperature range be absorbed tissues, reducing risks associated with permanent implants. While extrusion techniques have laid groundwork biomedicine, vat photopolymerization methods like stereolithography digital light processing are now at forefront, favored high resolution flexibility material design. However, search suitable materials these continues, current research focusing on developing systems meet both mechanical demands degradation profiles required applications. This review aims critically analyze advancements photopolymers, particularly elastomers, discuss challenges lie ahead clinical translation.

Language: Английский

Citations

7
Recent Innovations in Interfacial Strategies for DLP 3D Printing Process Optimization DOI
Lei Wu, Yanlin Song

Materials Horizons, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Three-dimensional (3D) printing, also known as additive manufacturing, is capable of transforming computer-aided designs into intricate structures directly and on demand. This technology has garnered significant attention in recent years. Among the various approaches, digital light processing (DLP) 3D which utilizes polymers or prepolymers ink, emerged leading new technology, driven by high demand across diverse fields such customized production, healthcare, education, art design. DLP printing employs cured slices molding units recognized for its potential to achieve both speed resolution. Recent insights process highlight inherent interface transformations between liquid solid states. review summarizes key aspects process, speed, precision, material diversity optimization, from view interfacial interactions phases are influenced resin formation, curing surfaces source properties. These include those at resin-UV pattern interface, structure-curing surface resin-curing resin-cured structure each contributing unique characteristics printed results. Finally, this addresses current challenges limitations providing valuable future improvements guiding innovations field.

Language: Английский

Citations

5
Enhanced DLP-Based One-Step 3D Printing of Multifunctional Magnetic Soft Robot DOI Creative Commons
Zhaoxin Li,

Ding Weng,

Lei Chen

et al.

Cyborg and Bionic Systems, Journal Year: 2025, Volume and Issue: 6

Published: Jan. 1, 2025

Soft structures driven by magnetic fields exhibit the characteristics of being unencumbered and rapidly responsive, enabling fabrication various soft robots according to specific requirements. However, made from a single material cannot meet multifunctional demands practical scenarios, necessitating development robot technologies with composite diverse materials. A novel enhanced digital light processing (DLP) 3-dimensional (3D) printing technology has been developed, capable different materials in step. Furthermore, hard material–superparamagnetic was designed printed, demonstrating its thermal effect under high-frequency editability domains material. The exhibits range locomotive behaviors, including crawling, rolling, swimming. Under influence 1-Hz actuation field, normalized velocities for these modes motion are recorded as 0.31 body length per second 1.88 0.14 demonstrated capacity navigate uneven terrain, surmount barriers, engage directed locomotion, along ability capture transport objects. Additionally, it showcased swimming capabilities within environments characterized low Reynolds numbers high fluid viscosities, findings that corroborate simulation analyses. multimaterial 3D introduced this research presents extensive potential design manufacturing robots.

Language: Английский

Citations

0
Heat/light dual-stimulating shape memory acrylic ester resin with fast response, self-repairing and remolding capabilities DOI
Aiwen Qian, Li Yuan, Guozheng Liang

et al.

European Polymer Journal, Journal Year: 2025, Volume and Issue: 226, P. 113739 - 113739

Published: Jan. 12, 2025

Language: Английский

Citations

0
Precision 3D printing of strongly magnetic soft structures containing high concentrations of NdFeB DOI
Zhaoxin Li,

Ding Weng,

Lei Chen

et al.

Applied Materials Today, Journal Year: 2025, Volume and Issue: 42, P. 102610 - 102610

Published: Jan. 22, 2025

Language: Английский

Citations

0
A Versatile Dual‐Responsive Shape‐Memory Gripper via Additive Manufacturing Toward High‐Performance Cross‐Scale Objects Maneuvering DOI Open Access
Sizhu Wu,

Jinpeng Fang,

Xueli Gao

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Abstract Smart grippers serving as soft robotics have garnered extensive attentions owing to their great potentials in medical, biomedical, and industrial fields. Though a diversity of that account for manipulating the small objects (e.g., tiny micrometer‐scale droplets) or big ones centimeter‐scale screw) has been proposed, however, cross‐scale maneuvering these two species leveraging an all‐in‐one intelligent gripper is still challenging. Here, magnet/light dual‐responsive shape‐memory (DR‐SMG) reported, based on hybrid Fe‐nanoparticles polymers. Thanks its photothermal effect, closed‐state DR‐SMG switches open state under synergetic cooperation near‐infrared‐ray (NIR) circinate magnetic field, referring temporary state. On other hand, once NIR loaded, opened would reconfigure permanent closed effect. Leveraging this principle, can grasp release diverse ranging from micrometers centimeters including metals, glass balls, polymers, liquids. Significantly, versatile capable spatially delivering multifunctional chemical droplets conductive liquid thereby enabling lab‐on‐chip electrical switch applications. This work provides new insights into further advances field robotics.

Language: Английский

Citations

0
Advances in Shape‐Memory Polymers and Composites for Biomedical Device Applications DOI Open Access

Chengjun Zeng,

Liwu Liu, Wei Zhao

et al.

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

Published: Jan. 29, 2025

Over the past two decades, remarkable advancements have been achieved in stimulus‐responsive shape‐memory polymers (SMPs), which exhibit desirable properties such as characteristics, deformability, and biocompatibility, while responding to external stimuli. The development of polymer composites (SMPCs) leads high recovery forces novel functionalities, including electrical actuation, magnetic biocompatibility. enhanced remotely controllable functionality further expand application SMPs biomedical areas, surgical applications for replacing handheld instruments drug delivery systems. In this review, device SMPCs are focused on their recent bone tissue scaffolds, lumen stents, carriers examined. Furthermore, bottlenecks challenges encountered by devices elucidated. future trend is also discussed, aiming provide valuable insights broadening fields.

Language: Английский

Citations

0
Revolutionizing the Future of Smart Materials: A Review of 4D Printing, Design, Optimization, and Machine Learning Integration DOI Open Access
Kashif Azher, Aamer Nazir,

Muhammad Umar Farooq

et al.

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

Published: Feb. 25, 2025

Abstract With technological advancement and development, there is a tremendous increase in demand for different smart materials because of their stimulation from external sources. Moreover, the time‐dependent response provides insight into fabrication these using 4D printing (4DP) techniques. Hence, this study presents comprehensive review 4DP materials. The covers aspects material, design optimization to printing. Herein, have been discussed detail based on physical, biological, chemical stimuli‐responsive subtype's behavior. For designing materials, usage tools such as new software, finite element analysis, machine learning are also discussed. challenging responsive natures complexity mechanisms. detailed present 3D techniques, use 4DP, how future applications can be incorporated with material presented. help learning, directions fabricating 4DP. challenges utilization comprehensively covered.

Language: Английский

Citations

0