Recent Advances in the Additive Manufacturing of Stimuli‐Responsive Soft Polymers

Advanced Engineering Materials, Год журнала: 2023, Номер 25(21)

Опубликована: Авг. 29, 2023

Stimuli‐responsive polymers (SRPs) are special types of soft materials, which have been extensively used for developing flexible actuators, robots, wearable devices, sensors, self‐expanding structures, and biomedical thanks to their ability change shapes functional properties in response external stimuli including light, humidity, heat, pH, electric field, solvent, magnetic field or combinations two more these stimuli. In recent years, additive manufacturing (AM) aka 3D printing technology SRPs, also known as 4D printing, has gained phenomenal attention different engineering fields, its unique develop complex, personalized, innovative undergo twisting, elongating, swelling, rolling, shrinking, bending, spiraling, other complex morphological transformations. Herein, an effort made provide insightful information about the AM techniques, type applications including, but not limited tissue engineering, bionics, construction, smart textiles. This article incorporates current challenges prospects, hoping basis utilization this fields. It is expected that amalgamation with SRPs would unparalleled advantages arenas.

Язык: Английский

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Self-folding soft-robotic chains with reconfigurable shapes and functionalities

Nature Communications, Год журнала: 2023, Номер 14(1)

Опубликована: Март 7, 2023

Magnetic continuum soft robots can actively steer their tip under an external magnetic field, enabling them to effectively navigate in complex vivo environments and perform minimally invasive interventions. However, the geometries functionalities of these robotic tools are limited by inner diameter supporting catheter as well natural orifices access ports human body. Here, we present a class soft-robotic chains (MaSoChains) that self-fold into large assemblies with stable configurations using combination elastic energies. By pushing pulling MaSoChain relative its sheath, repeated assembly disassembly programmable shapes functions achieved. MaSoChains compatible state-of-the-art navigation technologies provide many desirable features difficult realize through existing surgical tools. This strategy be further customized implemented for wide spectrum

Язык: Английский

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Intelligent Vascularized 3D/4D/5D/6D-Printed Tissue Scaffolds

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Окт. 31, 2023

Abstract Blood vessels are essential for nutrient and oxygen delivery waste removal. Scaffold-repairing materials with functional vascular networks widely used in bone tissue engineering. Additive manufacturing is a technology that creates three-dimensional solids by stacking substances layer layer, mainly including but not limited to 3D printing, also 4D 5D printing 6D printing. It can be effectively combined vascularization meet the needs of vascularized scaffolds precisely tuning mechanical structure biological properties smart scaffolds. Herein, development neovascularization engineering systematically discussed terms importance tissue. Additionally, research progress future prospects printed scaffold highlighted presented four categories: scaffolds, cell-based loaded specific carriers bionic Finally, brief review additive manufacturing-tissue related tissues such as engineering, cardiovascular system, skeletal muscle, soft discussion challenges efforts leading significant advances intelligent regeneration presented.

Язык: Английский

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Stimuli-Responsive Functional Micro-/Nanorobots: A Review

ACS Nano, Год журнала: 2023, Номер 17(16), С. 15254 - 15276

Опубликована: Авг. 3, 2023

Stimuli-responsive functional micro-/nanorobots (srFM/Ns) are a class of intelligent, efficient, and promising microrobots that can react to external stimuli (such as temperature, light, ultrasound, pH, ion, magnetic field) perform designated tasks. Through adaptive transformation into the corresponding forms, they perfectly match demands depending on different applications, which manifest extremely important roles in targeted therapy, biological detection, tissue engineering, other fields. Promising srFM/Ns be, few reviews have focused them. It is therefore necessary provide an overview current development these intelligent clear inspiration for further this field. Hence, review summarizes advances stimuli-responsive regarding their response mechanism, achieved functions, applications highlight pros cons stimuli. Finally, we emphasize existing challenges propose possible strategies help accelerate study field promote toward actual applications.

Язык: Английский

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Recent development in multizonal scaffolds for osteochondral regeneration

Bioactive Materials, Год журнала: 2023, Номер 25, С. 122 - 159

Опубликована: Фев. 2, 2023

Osteochondral (OC) repair is an extremely challenging topic due to the complex biphasic structure and poor intrinsic regenerative capability of natural osteochondral tissue. In contrast current surgical approaches which yield only short-term relief symptoms, tissue engineering strategy has been shown more promising outcomes in treating OC defects since its emergence 1990s. particular, use multizonal scaffolds (MZSs) that mimic gradient transitions, from cartilage surface subchondral bone with either continuous or discontinuous compositions, structures, properties tissue, gaining momentum recent years. Scrutinizing latest developments field, this review offers a comprehensive summary advances, hurdles, future perspectives repair, particularly MZSs including bilayered, trilayered, multilayered, scaffolds, by bringing together onerous demands architecture designs, material selections, manufacturing techniques as well choices growth factors cells, each possesses unique challenges opportunities.

Язык: Английский

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Designing biomimetic scaffolds for skin tissue engineering

Biomaterials Science, Год журнала: 2023, Номер 11(9), С. 3051 - 3076

Опубликована: Янв. 1, 2023

This review offers systematic considerations of material design principles and fabrication techniques for biomimetic skin tissue engineering scaffolds.

Язык: Английский

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Materials consideration for the design, fabrication and operation of microscale robots

Nature Reviews Materials, Год журнала: 2024, Номер 9(3), С. 159 - 172

Опубликована: Фев. 8, 2024

Язык: Английский

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3D‐Printed Nanostructured Copper Substrate Boosts the Sodiated Capability and Stability of Antimony Anode for Sodium‐Ion Batteries

Advanced Functional Materials, Год журнала: 2024, Номер 34(19)

Опубликована: Янв. 15, 2024

Abstract Sodium‐ion batteries (SIBs) represent a viable substitute to lithium‐ion due their affordability and resource abundance. For SIBs, antimony (Sb) shows potential as anode material but is impeded by the high volumetric variations. Here challenges of Sb sodium storage introducing nanostructured Cu substrate for enhanced adhesion morphology optimization addressed, which realized fused deposition modeling (FDM) printing substrate, subsequent high‐temperature sintering, electrodeposition Sb. In deposited on three dimensional (3D) printed performs improved cycling stability compared with that Sb@Cu commercial foil can be attributed nanostructure 3D‐Cu substrate. Such architecture induces generation pine‐leaf‐like clusters promote kinetics, it aids between cluster preventing detachment restructuring robust porous ligament‐channel framework. The evolution, (de)sodiation mechanism, gas evolution are explored ex situ scanning electron microscope, operando X‐ray diffraction, differential electrochemical mass spectrometry separately. developed Sb@3D‐Cu offers flexible pathway constructing 3D‐printed self‐supported electrodes SIBs.

Язык: Английский

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Tunable afterglow for mechanical self-monitoring 3D printing structures

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Фев. 21, 2024

Abstract Self-monitoring materials have promising applications in structural health monitoring. However, developing organic afterglow for self-monitoring is a highly intriguing yet challenging task. Herein, we design two molecules with twisted donor-acceptor-acceptor’ configuration and achieve dual-emissive tunable lifetimes (86.1–287.7 ms) by doping into various matrices. Based on photosensitive resin, series of complex structures are prepared using 3D printing technology. They exhibit lifetime Young’s Modulus manipulating the photocuring time humidity level. With sufficient or dry conditions, long-lived bright green without apparent deformation under external loading realized. We demonstrate that mechanical properties can be well monitored controlling humidity, quantitively manifested lifetimes. This work casts opportunities constructing flexible devices sensing real-time detection.

Язык: Английский

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AI-enhanced biomedical micro/nanorobots in microfluidics

Lab on a Chip, Год журнала: 2024, Номер 24(5), С. 1419 - 1440

Опубликована: Янв. 1, 2024

Although developed independently at the beginning, AI, micro/nanorobots and microfluidics have become more intertwined in past few years which has greatly propelled cutting-edge development fields of biomedical sciences.

Язык: Английский

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