Direct Ink Writing: A 3D Printing Technology for Diverse Materials

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(28)

Published: March 5, 2022

Additive manufacturing (AM) has gained significant attention due to its ability drive technological development as a sustainable, flexible, and customizable scheme. Among the various AM techniques, direct ink writing (DIW) emerged most versatile 3D printing technique for broadest range of materials. DIW allows practically any material, long precursor can be engineered demonstrate appropriate rheological behavior. This acts unique pathway introduce design freedom, multifunctionality, stability simultaneously into printed structures. Here, comprehensive review complex structures from materials, including polymers, ceramics, glass, cement, graphene, metals, their combinations through multimaterial is presented. The begins with an overview fundamentals rheology, followed by in-depth discussion methods tailor different classes Then, diverse applications ranging electronics food biomedical industries are discussed. Finally, current challenges limitations this highlighted, prospects guideline toward possible futuristic innovations.

Language: Английский

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4D bioprinting of smart polymers for biomedical applications: recent progress, challenges, and future perspectives

Reactive and Functional Polymers, Journal Year: 2022, Volume and Issue: 179, P. 105374 - 105374

Published: Aug. 10, 2022

4D bioprinting is the next-generation additive manufacturing-based fabrication platform employed to construct intricate, adaptive, and dynamic soft hard tissue structures as well biomedical devices. It achieved by using stimuli-responsive materials, especially shape memory polymers (SMPs) hydrogels, which possess desirable biomechanical characteristics. In last few years, numerous efforts have been made printing community develop novel polymeric materials considering their perspective. This review presents an up-to-date overview of technology incorporating functionalities biomaterials focused approach towards different engineering regenerative medicine (TERM) applications. includes bone, cardiac, neural, cartilage, drug delivery systems, other high-value also addresses current limitations challenges in provide a basis for foreseeable advancements TERM applications that could be helpful successful utilization clinical settings.

Language: Английский

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Mechanically-Guided 3D Assembly for Architected Flexible Electronics

Chemical Reviews, Journal Year: 2023, Volume and Issue: 123(18), P. 11137 - 11189

Published: Sept. 7, 2023

Architected flexible electronic devices with rationally designed 3D geometries have found essential applications in biology, medicine, therapeutics, sensing/imaging, energy, robotics, and daily healthcare. Mechanically-guided assembly methods, exploiting mechanics principles of materials structures to transform planar fabricated using mature semiconductor techniques into architected ones, are promising routes such devices. Here, we comprehensively review mechanically-guided methods for electronics. Mainstream classified discussed on the basis their fundamental deformation modes (i.e., rolling, folding, curving, buckling). Diverse interconnects device forms then summarized, which correspond two key components an device. Afterward, structure-induced functionalities highlighted provide guidelines function-driven structural designs electronics, followed by a collective summary resulting applications. Finally, conclusions outlooks given, covering achieve extreme deformations dimensions, inverse design encapsulation strategies as well perspectives future

Language: Английский

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Magnetically driven formation of 3D freestanding soft bioscaffolds

Science Advances, Journal Year: 2024, Volume and Issue: 10(5)

Published: Feb. 2, 2024

3D soft bioscaffolds have great promise in tissue engineering, biohybrid robotics, and organ-on-a-chip engineering applications. Though emerging three-dimensional (3D) printing techniques offer versatility for assembling biomaterials, challenges persist overcoming the deformation or collapse of delicate structures during fabrication, especially overhanging thin features. This study introduces a magnet-assisted fabrication strategy that uses magnetic field to trigger shape morphing provide remote temporary support, enabling straightforward creation with overhangs thin-walled 3D. We demonstrate effectiveness our through replicate complex topology branching vascular systems. Furthermore, we engineered hydrogel-based support actuators capable walking motion triggered by cardiomyocytes. approach opens new possibilities shaping hydrogel materials into morphologies, which will further empower broad range biomedical

Language: Английский

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Bio‐Inspired Dynamically Morphing Microelectronics toward High‐Density Energy Applications and Intelligent Biomedical Implants

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(26)

Published: Feb. 25, 2024

Choreographing the adaptive shapes of patterned surfaces to exhibit designable mechanical interactions with their environment remains an intricate challenge. Here, a novel category strain-engineered dynamic-shape materials, empowering diverse multi-dimensional shape modulations that are combined form fine-grained microarchitectures is introduced. Using micro-origami tessellation technology, heterogeneous materials provided strategic creases featuring stimuli-responsive micro-hinges morph precisely upon chemical and electrical cues. Freestanding multifaceted foldable packages, auxetic mesosurfaces, morphable cages three forms demonstrated herein these complex 4-dimensional (4D) metamaterials. These systems integrated in dual proof-of-concept bioelectronic demonstrations: soft supercapacitor enhancing its power density (≈108 mW cm

Language: Английский

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Self‐Healing, Photothermal‐Responsive, and Shape Memory Polyurethanes for Enhanced Mechanical Properties of 3D/4D Printed Objects

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 33(15)

Published: Dec. 7, 2022

Abstract Additive manufacturing is a promising technology that can directly fabricate structures with complex internal geometries, which barely achieved by traditional manufacturing. However, the mechanical properties of fused deposition modeling (FDM)‐printed objects are inferior to those conventionally manufactured products. To improve printed products, series novel thermoplastic polyurethanes self‐healing properties, intrinsic photothermal effects, and excellent printability designed synthesized introducing dynamic oxime–carbamate bonds hydrogen into polymer chains. On‐demand introduction near‐infrared (NIR) irradiation, direct heating, sunlight irradiation enhances interfacial bonding strength thus product. Additionally, anisotropy products be sophistically manipulated regulating conditions. Support‐free printing healing damaged also owing material. Moreover, as‐prepared materials exhibit shape‐memory NIR or heating effectively triggers recovery demonstrates their potential in 4D man‐like robot. This study not only provides facile strategy for obtaining high‐performance but broadens applications FDM intelligent devices.

Language: Английский

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4D printing: a cutting-edge platform for biomedical applications

Biomedical Materials, Journal Year: 2022, Volume and Issue: 17(6), P. 062001 - 062001

Published: Aug. 31, 2022

Abstract Nature’s materials have evolved over time to be able respond environmental stimuli by generating complex structures that can change their functions in response distance, time, and direction of stimuli. A number technical efforts are currently being made improve printing resolution, shape fidelity, speed mimic the structural design natural with three-dimensional printing. Unfortunately, this technology is limited fact printed objects static cannot reshaped dynamically In recent years, several smart been developed undergo dynamic morphing a stimulus, thus resolving issue. Four-dimensional (4D) refers manufacturing process involving additive manufacturing, materials, specific geometries. It has become an essential for biomedical engineering potential create wide range useful products. This paper will discuss concept 4D bioprinting developments which actuated different exploited develop biomimetic structures, significant implications pharmaceutics research, as well prospects future.

Language: Английский

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4D Printing of Hydrogels: Innovation in Material Design and Emerging Smart Systems for Drug Delivery

Pharmaceuticals, Journal Year: 2022, Volume and Issue: 15(10), P. 1282 - 1282

Published: Oct. 19, 2022

Advancements in the material design of smart hydrogels have transformed way therapeutic agents are encapsulated and released biological environments. On other hand, expeditious development 3D printing technologies has revolutionized fabrication hydrogel systems for biomedical applications. By combining these two aspects, 4D (i.e., hydrogels) emerged as a new promising platform novel controlled drug delivery that can adapt mimic natural physio-mechanical changes over time. This allows printed objects to transform from static dynamic response various physiological chemical interactions, meeting needs healthcare industry. In this review, we provide an overview innovation systems, current technical approaches toward printing, emerging structures Finally, discuss existing challenges their prospects.

Language: Английский

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4D printing: interdisciplinary integration of smart materials, structural design, and new functionality

International Journal of Extreme Manufacturing, Journal Year: 2023, Volume and Issue: 5(3), P. 032011 - 032011

Published: June 22, 2023

Highlights The key technological roadmap for implementation of 4D printing is comprehensively summarized. Material-structure-functionality integrated aspects in are emphasized. links between smart materials, 3D techniques, structures, stimulus, and new functionalities multidisciplinary applications established. General approaches to designing programmable structures introduced.

Language: Английский

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3D‐Printed Microinjection Needle Arrays via a Hybrid DLP‐Direct Laser Writing Strategy

Advanced Materials Technologies, Journal Year: 2023, Volume and Issue: 8(5)

Published: Feb. 5, 2023

Microinjection protocols are ubiquitous throughout biomedical fields, with hollow microneedle arrays (MNAs) offering distinctive benefits in both research and clinical settings. Unfortunately, manufacturing-associated barriers remain a critical impediment to emerging applications that demand high-density of hollow, high-aspect-ratio microneedles. To address such challenges, here, hybrid additive manufacturing approach combines digital light processing (DLP) 3D printing "ex situ direct laser writing (

Language: Английский

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