ABSTRACT This study innovatively proposes and fabricates a modular three‐dimensional (3D) biodegradable root‐anchoring structure (BRAS) (dimensions: 10.5 cm × 12.0 cm × 1.0 cm, α = 60°). It is designed to address the issue that seagrass seedlings are easily displaced by seawater erosion. Fluid–structure interaction (FSI) simulations demonstrate that this design effectively disperses fluid forces. Meanwhile, the design generates stable low‐speed wake flows. Additionally, it maintains deformation below 1 cm. The structure is manufactured via selective laser sintering (SLS) technology. Biodegradable polylactic acid/polycaprolactone (PLA/PCL) composite materials are used for fabrication. The study evaluated mass loss, pH changes, microstructure variations, and flexural strength. At a PCL content of 10 wt.%, the composite parts achieve an ideal balance between mechanical properties and controlled degradability. It can match the early establishment cycle of seagrass and provides a comprehensive systematic solution for coastal ecological restoration. This research holds significant implications for seagrass bed restoration and ecological balance maintenance.

Root-analog dental implants: A systematic review of the available clinical evidence.

Effect of polymer molecular weight on structure and properties of polyamide-12 powders for selective laser sintering prepared via thermally induced phase separation

Properties of in situ SiCW/SiC composites prepared based on selective laser sintering technology

The inherent Gaussian intensity distribution of laser beams causes critical issues such as ablation, spattering, and porosity during laser sintering and melting. Although modulating the intensity distribution by a beam shaper can alleviate these problems, it suffers from high cost, limited durability, and significant energy loss. To address these challenges, we propose a thickness-matching strategy that aligns film geometry with the laser intensity profile. Mathematical analysis provides the optimal thickness distribution, while inkjet printing with computable parameters enables curved circuits with ideal profiles. The curved profile strategy demonstrates enhanced performance in both semiconducting and metallic circuits. For indium tin oxide (ITO) conductive glass, up to a 3.8-fold improvement in conductance and a 5.1% increase in transmittance are achieved compared with planar circuits, while for copper (Cu) conformal circuits, the electrical conductivity is improved by 160% compared with planar circuits. This work establishes a practical additive manufacturing route for high-performance conformal circuits.

Multi-Physics finite element modeling of PEEK in selective laser sintering: effects of laser power and scanning speed on thermal distribution and melt pool formations

ABSTRACT The present work is carried out for a better understanding between process and property relationships in AlSi10Mg laser sintering used for fabrication and design of high-quality metal parts using additive manufacturing techniques. The research aims to investigate in understanding the variations in process parameters (laser power, scanning speed and hatch spacing) that affect the microstructure, elemental distribution and mechanical properties of laser sintered AlSi10Mg alloys. The laser sintering process was carried out with laser power levels ranging from 330 W to 400 W, scanning speeds between 1000 mm/s and 1400 mm/s and hatch distances from 0.10 mm to 0.25 mm. The results specified that a laser power of 370 W, a scanning speed of 1200 mm/s and a hatch distance of 0.15 mm are the optimal processing conditions. This is due to the reasonable particle fusion, improved densification, better crystallinity, reduced porosity and better mechanical properties. The excessive laser power leads to the thermal distortions and surface irregularities, while low power resulted in incomplete sintering and high porosity on the manufactured surface. The optimal settings also developed sharper XRD peaks with lower full width at half maximum (FWHM), indicating reduced lattice strain and refined grain structures.

In the present study, a new Polylactic acid/Ethylene Propylene Diene Monomer/Titanium dioxide/Carbon nanotubes (PLA/EPDM/TiO 2 /CNTs) nanocomposite was fabricated via selective laser sintering (SLS) to enhance its thermal stability, rheological behavior, yield strength, and elongation. The optimization process utilized response surface methodology (RSM) and desirability function analysis (DFA), focusing on the critical parameters of laser power, scan rate, and the content of CNTs and TiO 2 nanoparticles. The thermal, rheological, and microstructural properties were characterized using thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) imaging, and frequency sweep tests. An enhancement in the thermal stability of the nanocomposite was observed upon the incorporation of CNT and TiO 2 nanoparticles. Effective nanoparticle dispersion was confirmed by microstructural and rheological measurements at 2 wt% CNT and 2 wt% TiO 2 . The optimal parameters for concurrent improvement of yield strength and elongation, as determined by RSM and DFA, were established to be 1.6 wt% CNT, 1.8 wt% TiO 2 , a scan rate of 2740 mm/s, and a laser power of 17.15 W.

Three - dimensional (3D) printing, also known as additive manufacturing, has emerged as a transformative technology in pharmaceutical sciences, enabling the fabrication of personalized dosage forms with precise control over drug dose, release kinetics, and g eometry. Conventional pharmaceutical manufacturing relies on mass production techniques that fail to address inter - patient variability, leading to suboptimal therapeutic outcomes. The advent of 3D printed pharmaceuticals aligns with the concept of Pharmacy 4.0, where digitalization, automation, and patient - centric care converge. This comprehensive review critically discusses major 3D printing technologies applied in pharmaceutics, including fused deposition modeling (FDM), stereolithography (SLA), selective laser sintering (SLS), and inkjet printing. The review further explores pharmaceutical excipients, formulation strategies, advanced dosage forms such as polypills and Chrono - therapeutic systems, clinical applications in special populations, quality contro l considerations, and regulatory challenges. Recent advances integrating artificial intelligence and point - of - care manufacturing are also highlighted. Finally, future perspectives and challenges for large - scale clinical translation are discussed.

From blueprints to reality: A narrative review of evidence-based 3D printers in dentistry.

Effect of gas nitriding process on the microstructure and properties of titanium Grade 2 specimens produced using direct metal laser sintering

Engineering a therapeutic deferoxamine-mesoporous silica-naringin/poly(L-lactic acid) scaffold to reverse ferroptosis-mediated imbalance and promote osteogenic differentiation in osteoporotic microenvironment.

3D printing in theranostic applications.

This comprehensive review emphasizes the significant role of additive manufacturing (AM) in transforming the production methods of aerospace and aeronautical real components. Reducing part assembly and manual interventions and related expenses, together with the possibility of just-in-time production of customised geometry and material-saving structures, are the main reasons for aeronautical interest in 3D printing technology. From a broader perspective, 3D printing allows not only the production of parts on Earth that are intended for deployment in space missions later (FOR-space 3D printing), but also onboard production and maintenance (IN-space 3D printing). New approaches, such as artificial intelligence and machine learning, have emerged as powerful tools for optimized designs, quality control, and process parameter definition, able to consider performance criteria, material properties, and manufacturing constraints. In this context, the present review explicitly examines the working principles, material requirements, and process parameters of prominent 3D printing methods in aerospace and aeronautics, including fused filament fabrication (FFF), direct ink writing (DIW), stereolithography (SLA), materials jetting (MJ), and selective laser sintering (SLS). Particular attention is given to polymeric composites and nanocomposites and their smart functions (e.g., piezoresistivity, piezoelectricity, self-healing, and electro-thermal heating). In addition to these points, one of the main goals of the present review is to analyse the real-world examples from industry leaders such as NASA and Boeing, illustrating practical implementations. Reviewing the industrial advancements makes the reader aware of how much AM technology has been developed on an industrial scale in highly exigent sectors, paving the way to understanding the future trends of research activities. Within this scope, at the end of the review, a comparison of the different technologies, and their advantages and disadvantages is presented together with the future challenges to be addressed.

A NIR-responsive upconversion implant for wireless photodynamic therapy of tumors.

Oxygen self-supplied BTOv-Ru heterojunction boosts the sonodynamic antibacterial efficiency of scaffold.

This review discusses the evolution, key technologies, and application prospects of multi-dimensional food printing-3D and higher-dimensional food additive manufacturing-with a focus on 3D and 4D systems. It outlines the foundational principles of 3D food printing and its expansion into food applications, explaining how 4D food printing introduces time-dependent, stimulus-responsive behavior to achieve dynamic functionality. The potential of higher-dimensional printing, such as 5D and 6D, is also noted as an emerging direction for intelligent food systems. The analysis covers major techniques, including extrusion-based printing, selective laser sintering, binder jetting, and inkjet printing, with emphasis on the essential influence of food ink formula and processing parameters on printing accuracy. Multi-dimensional printing shows considerable promise in personalized nutrition, texture and shape regulation, and functional food development. Notably, 4D printing achieves dynamic modifications in color, flavor, and structure through tailored material design. At the same time, the technology continues to face challenges related to cost, production efficiency, food safety, and material formulation limitations. Future progress will depend on advances in food ink design and the integration of complementary technologies to strengthen its role in sustainable manufacturing and precision nutrition.

3D-printed biosensors for real-time, personalized, and eco-friendly medical diagnostics.

Dimensional Accuracy of Digitally Constructed Co-Cr Framework Maxillary Obturator Using Casting versus Milling and Laser Sintering Techniques (An In Vitro Study)

Purpose: This study aimed to evaluate and compare the internal adaptation of resto-rations produced with different materials and techniques. Material and Method: In the study, tooth 36 was prepared on a dental training mo-del (Kavo Basic study model, KavoGMBH, Germany) by an experienced prosthodontist. Using computer-aided manufacturing methods, 10 feldspathic ceramic crowns (Cerec Blocs, Sirona, Bensheim, Germany), monolithic zirconia crowns (Ceramill ZI CAM, Amann Girr-bach, Germany), zirconia frameworks (Aidite, Superfect Zir, USA), metal frameworks (Bego, Germany) by laser sintering, and metal frameworks (using conventional methods) were fab-ricated. The metal and zirconia frameworks were completed with superstructure ceramics (VITA, Germany) by an experienced technician. The restorations were placed on the prepa-red teeth, and a silicone replica of the cement gap was obtained using the replica technique with additive-type silicone impression material (Heraeus Kulzer, Germany). Sections obtai-ned from replicas were measured at 10 points using a light microscope. Statistical analysis of the data was performed using SPSS (ver. 21.0; SPSS, Inc., Chicago, IL, USA). ANOVA and post hoc Tukey HSD tests were applied to the obtained data. Results: A statistically significant difference was observed only between axio-occlusal measurement points (p<0.05). Conclusion: The internal range values were measured at a clinically acceptable range value of less than 200 micrometers. The highest internal range values were observed in the occlusal region and the lowest values in the axio-gingival region. The mean value of the hig-hest internal range was measured at the occlusal measurement point in the monolithic zir-conium group. The lowest mean value of internal range was measured at the axio-gingival measurement point in the zirconia-supported ceramic group.