Materials & Design最新文献_第9页

Three-fold superstructured superlattice HfN/HfAlN thin films for improved damage tolerance 三层超结构超晶格HfN/HfAlN薄膜，提高损伤容限

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2026-01-01 DOI: 10.1016/j.matdes.2025.115383

Marcus Lorentzon , Rainer Hahn , Justinas Palisaitis , Helmut Riedl , Lars Hultman , Jens Birch , Naureen Ghafoor

Achieving both high hardness and toughness in protective coatings is a formidable challenge. Here, we harness an original superlattice architecture that synergistically combines Koehler hardening with coherent interfaces to reduce the crack driving forces and enhance toughness, enabling coatings with improved damage tolerance. We engineer epitaxial HfN_1.33/Hf_0.76Al_0.24N_1.15 superlattices on MgO(0 0 1) substrates using low-energy, high-flux ion-assisted reactive magnetron sputtering. These superlattices, with bilayer periods ranging from 6 to 20 nm exhibit a unique three-fold superstructure, where each layer forms a three-dimensional checkerboard pattern. HfN_1.33 forms a checkerboard period of 7.5 Å from self-organization of Hf-vacancies and N-interstitials, whereas Hf_0.76Al_0.24N_1.15 forms a period of 12.5 Å due to spinodal decomposition. Mechanical testing reveals high hardness (∼36 GPa), matching that of Hf_0.76Al_0.24N_1.15 and exceeding the softer HfN_1.33 (∼27 GPa), reflecting interface-driven Koehler strengthening. Micropillar compression tests show distributed cracking along {1 1 0}〈1 1 0〉 slip systems and faster mechanical recovery than Hf_0.76Al_0.24N_1.15 for improved toughness, corroborated by cube-corner indentation fracture analysis, while not reaching the superb toughness and plasticity of HfN_1.33. These results demonstrate that epitaxial HfN_1.33/Hf_0.76Al_0.24N_1.15 superlattices combine high hardness and strength with good toughness for an improved film damage tolerance.

在保护涂层中实现高硬度和高韧性是一项艰巨的挑战。在这里，我们利用原始的超晶格结构，将Koehler硬化与相干界面协同结合，以减少裂纹驱动力并提高韧性，使涂层具有更好的损伤容忍度。我们利用低能量，高通量辅助反应磁控溅射技术在MgO（0 0 1）衬底上设计了外延HfN1.33/Hf0.76Al0.24N1.15超晶格。这些双层周期从6到20 nm的超晶格具有独特的三层上层结构，其中每层形成三维棋盘图案。HfN1.33由hf -空位和n -间隙自组织形成的棋盘周期为7.5 Å，而Hf0.76Al0.24N1.15由独立分解形成的棋盘周期为12.5 Å。力学测试显示高硬度（~ 36 GPa），与Hf0.76Al0.24N1.15相当，超过较软的HfN1.33 (~ 27 GPa)，反映界面驱动的Koehler强化。微柱压缩试验表明，在{1 1 0}< 1 1 1 0 >滑移体系上分布裂纹，力学恢复速度比Hf0.76Al0.24N1.15更快，韧性得到了提高，这一点得到了立方角压痕断裂分析的证实，但没有达到HfN1.33的优异韧性和塑性。结果表明，外延HfN1.33/Hf0.76Al0.24N1.15超晶格具有较高的硬度和强度，同时具有良好的韧性，提高了薄膜的损伤容忍度。

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引用次数: 0

Application of nano-drug delivery systems in the treatment of bone diseases: Mechanisms, strategies and challenges 纳米药物递送系统在骨病治疗中的应用：机制、策略和挑战

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2026-01-01 DOI: 10.1016/j.matdes.2025.115361

Guoyang Zhang , Weixuan Lin , Linghuan Guo , Yu Xiang , Luo Wang , Xiaoyu Yan

As a major class of diseases threatening human health and impairing quality of life, bone diseases present significant therapeutic challenges, including low drug bioavailability and inadequate targeting. Nano-drug delivery systems (NDDS) have emerged as a cutting-edge strategy, leveraging their unique advantages in enhancing local drug concentrations, enabling precise targeting, and facilitating intelligent drug release, with evolving material technologies needing systematic sorting for optimized design and application. Focusing on bone disease therapy, this review comprehensively covers the material selection of NDDS, preparation strategies, drug loading methods, and delivery mechanisms. It elaborates on the functional design strategies of NDDS tailored to address the specific needs of bone disease treatment, such as promoting bone formation, angiogenesis, neural regulation, inflammation inhibition, and anti-tumor effects. Additionally, this review analyzes the key challenges hindering the clinical translation of NDDS, while envisioning the transformative potential of intelligent design trends. Overall, this work serves not only as a systematic reference for the precise application and optimization of NDDS in bone disease therapy but also as a handy guide to help researchers organize existing research progress and support clinicians in exploring translational therapeutic strategies—effectively bridging academic research and clinical translation to serve both communities.

作为威胁人类健康和影响生活质量的一类主要疾病，骨病提出了重大的治疗挑战，包括药物生物利用度低和靶向性不足。纳米药物递送系统（NDDS）已经成为一种前沿策略，利用其在提高局部药物浓度，实现精确靶向和促进智能药物释放方面的独特优势，随着材料技术的发展，需要系统分类以优化设计和应用。本文以骨病治疗为重点，从NDDS的材料选择、制备策略、载药方法、给药机制等方面进行综述。详细阐述了针对骨病治疗的具体需求量身定制的NDDS功能设计策略，如促进骨形成、血管生成、神经调节、炎症抑制和抗肿瘤作用。此外，本综述分析了阻碍NDDS临床转化的主要挑战，同时展望了智能设计趋势的变革潜力。总之，这项工作不仅为NDDS在骨病治疗中的精确应用和优化提供了系统的参考，而且还为帮助研究人员组织现有研究进展和支持临床医生探索转化治疗策略提供了方便的指南，有效地将学术研究和临床翻译连接起来，为两个社区服务。

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引用次数: 0

Nanoindentation study on the influence of nanovoid spatial distribution on local plastic deformation behavior 纳米孔隙空间分布对局部塑性变形行为影响的纳米压痕研究

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-12-31 DOI: 10.1016/j.matdes.2025.115420

Jiapo Wang , Kaiwen Zheng , Jianwei Liang , Yan Peng

This study employs large-scale molecular dynamics simulations to investigate the influence of spherical nanovoids on the nanoindentation response of nickel single crystals. The interaction between nanovoid geometry—varied in size and depth—and the resulting plastic deformation behavior is systematically examined. The results show that nanovoids significantly affect dislocation evolution, acting as dislocation sinks. The absorption capacity increases with nanovoid size and proximity to the free surface. Post-nucleation dislocations propagate toward nanovoids, indicating a spatial coupling between defects and plastic slip activity. Mechanically, nanovoids cause a size- and location-dependent reduction in hardness, with surface-proximal and larger nanovoids having a more pronounced softening effect. Deeply embedded nanovoids show negligible impact. An empirical relation quantifies the hardness degradation based on nanovoid geometry, showing strong agreement with simulation data. These findings provide insights into defect-plasticity interactions and contribute to the design and performance evaluation of nickel-based materials in micro/nanoscale applications.

本研究采用大尺度分子动力学模拟研究了球形纳米孔对镍单晶纳米压痕响应的影响。系统地研究了纳米孔隙几何形状（大小和深度变化）与塑性变形行为之间的相互作用。结果表明，纳米孔洞对位错演化有显著影响，起到位错汇的作用。吸收能力随纳米空洞尺寸的增大和接近自由表面而增大。成核后位错向纳米孔洞扩展，表明缺陷和塑性滑移活动之间存在空间耦合。机械上，纳米孔洞会导致尺寸和位置相关的硬度降低，表面近端和较大的纳米孔洞具有更明显的软化效果。深嵌纳米空洞的影响可以忽略不计。基于纳米孔洞几何形状的硬度退化的经验关系式与模拟数据非常吻合。这些发现为缺陷-塑性相互作用提供了见解，并有助于镍基材料在微/纳米应用中的设计和性能评估。

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引用次数: 0

Functionally graded sinusoid-based metamaterials: Towards tailoring effective mechanical properties and deformation modes with a single design parametric function 基于功能梯度正弦波的超材料：用单一设计参数函数定制有效的机械性能和变形模式

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-12-31 DOI: 10.1016/j.matdes.2025.115423

Diana L. Ramírez-Gutiérrez , Enrique Cuan-Urquizo , Armando Roman-Flores

Gradual variations in the structure of metamaterials, known as functionally graded lattices, are increasingly being employed to enhance material performance across various engineering fields. Breaking symmetry and uniformity has enhanced functionality by improving mechanical properties like stiffness, energy absorption and unique deformation mechanisms. The present study introduces a novel design framework for creating a wide range of graded lattices made of curved constituent elements parameterized with sinusoids. This design approach allows the gradation of horizontal and vertical constituent elements independently. Specimens were additively manufactured to experimentally characterize the mechanical properties, deformation modes, and energy absorption under quasi-static compression tests. These experimental results were compared with nonlinear finite element models, resulting in good agreement. The graded lattices generated result in predictable deformation, smoother transitions between elastic and plastic deformation, higher strength and increased energy absorption compared to their uniform counterparts. Varying only one design parameter resulted in a 33% increase in the effective Young’s modulus, while maintaining the variation of volume fraction with

<

2%. This study demonstrates the potential of this design framework to obtain a wide design space for a desired mechanical performance while controlling the directionality dependence of the properties in the two main axes.

超材料结构的逐渐变化，被称为功能梯度晶格，越来越多地被用于提高各种工程领域的材料性能。打破对称性和均匀性通过改善刚度、能量吸收和独特的变形机制等机械性能来增强功能。本研究介绍了一种新的设计框架，用于创建由正弦曲线参数化的弯曲组成单元组成的大范围渐变晶格。这种设计方法允许水平和垂直组成元素独立渐变。在准静态压缩试验中，通过增材制造试样来实验表征其力学性能、变形模式和能量吸收。将实验结果与非线性有限元模型进行了比较，结果吻合较好。与均匀晶格相比，渐变晶格产生可预测的变形，弹性和塑性变形之间的平滑过渡，更高的强度和增加的能量吸收。仅改变一个设计参数，有效杨氏模量增加33%，而体积分数保持2%的变化。这项研究证明了这种设计框架的潜力，即在控制两个主轴上的特性的方向性依赖的同时，获得所需的机械性能的广泛设计空间。

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引用次数: 0

Radiation damage in δ-phase Pu-Ga alloys δ相Pu-Ga合金的辐射损伤

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-12-31 DOI: 10.1016/j.matdes.2025.115427

Shihao Su , Wenyuan Wang , Sheng Zhang , Fengchao Wu , Fan Liu , Yang Liu , Yong Liu , Liang Shen , Lei Lu , Bin Su , Yong Xu , Tao Fa

Irradiation can cause severe property degradation of materials (i.e., radioactive aging), which has drawn general interest in both scientific research and engineering applications. In nuclear areas, this is significantly important due to many nuclear materials being radioactive or exposed to radiation environments. Although the basic process of the self-irradiation of actinides and their derivatives has been studied, there is still much that remains elusive, especially for Pu-Ga alloys, one of the most mysterious nuclear materials. Here, we utilize molecular dynamics simulations to study the influence of the incident angle of the U nucleus on the self-irradiation of

δ

-phase Pu-Ga alloys, also concerning the effect of Ga concentration in the alloys. The generation of defects shows obvious dependence on the U incident angles, where the maximum and ultimate numbers of defects change up to 59% and 38%, respectively. Besides, the ultimate local atomic structures of the materials are also affected. Different U incident angles lead to different collision kinematics and energy transfer efficiencies, which subsequently cause cascade collisions with different paths and scales. Specifically, the coupling of thermal vibrations and geometric alignment in certain directions leads to high variability in defect production. The self-irradiation of

δ

-phase Pu-Ga alloys with a series of Ga concentrations (ranging from 2 to 7 at. %) is also studied, and the ultimate defect number is found to be the smallest for the alloys with the middle concentration of 5 at. %. This work shows the importance of considering the irradiation angle and element content for the primary damage formation underlying radioactive aging of nuclear materials, which will be useful for the development of strategies to manage aged nuclear materials.

辐照可引起材料的严重性能退化（即放射性老化），这在科学研究和工程应用中引起了普遍的兴趣。在核领域，这是非常重要的，因为许多核材料是放射性的或暴露于辐射环境。虽然锕系元素及其衍生物的自辐照的基本过程已经研究过，但仍有许多问题尚待解决，特别是对于最神秘的核材料之一的Pu-Ga合金。本文利用分子动力学模拟研究了U核入射角对δ相Pu-Ga合金自辐照的影响，以及合金中Ga浓度的影响。缺陷的产生对U型入射角有明显的依赖性，最大缺陷数和最终缺陷数的变化分别高达59%和38%。此外，材料的最终局部原子结构也受到影响。不同的U入射角导致不同的碰撞运动学和能量传递效率，从而导致不同路径和尺度的串级碰撞。具体来说，在某些方向上，热振动和几何对准的耦合导致缺陷产生的高度可变性。δ相Pu-Ga合金在Ga浓度（2 ~ 7）范围内的自辐照。结果表明，中浓度为5at的合金的最终缺陷数最小。%。研究结果表明，考虑辐照角度和元素含量对核材料放射性老化初级损伤形成的重要性，将有助于制定核材料老化管理策略。

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引用次数: 0

Multifunctional zinc@dTNT/cerium-tannic acid composite system for controlled release of metal micronutrients to enhance bone reconstruction 多功能zinc@dTNT/铈-单宁酸复合系统控制释放金属微量营养素，促进骨重建

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-12-30 DOI: 10.1016/j.matdes.2025.115418

Haojie Liu , Zhuorong Zhan , Yan Wang , Na Zhao , Caihong Wu , Yan Yang , ChingTso Hsu , Xiaoliang Wang , Junqing Ma

Effective bone defect repair requires coordinated osteogenesis and angiogenesis while simultaneously combating infection and reactive oxygen species (ROS). However, multifunctional 3D-printed Ti6Al4V scaffolds capable of precisely and differentially releasing bioactive agents remain insufficiently exploration. Given that nanotubes with tailored morphologies exhibit excellent surface modification potential and drug loading capacity, we developed a multifunctional composite controlled-release system (Zn@dTNT/Ce-TA) by coating zinc (Zn)-loaded dumbbell-like titanium dioxide nanotube arrays (dTNT) with cerium (Ce)–tannic acid (TA) metal–phenolic networks (MPNs) to enhance bone reconstruction. This composite scaffold enables sustained and controlled release of Zn and Ce ions, thereby promoting coordinated osteogenesis and angiogenesis while providing antibacterial and antioxidative protection. Furthermore, Zn@dTNT/Ce-TA effectively scavenges both mitochondrial and exogenous ROS, stabilizing the microenvironment at bone defect sites. Overall, this study proposes a promising strategy for reparing critical-sized bone defects and managing ROS-associated bone diseases, offering a valuable direction for future bone tissue engineering.

有效的骨缺损修复需要协调成骨和血管生成，同时对抗感染和活性氧（ROS）。然而，能够精确和差异释放生物活性药物的多功能3d打印Ti6Al4V支架仍然缺乏充分的探索。鉴于具有定制形态的纳米管具有优异的表面修饰潜力和药物负载能力，我们开发了一种多功能复合控释系统（Zn@dTNT/Ce-TA），通过在负载锌（Zn）的哑铃状二氧化钛纳米管阵列（dTNT）上涂覆铈(Ce) -单宁酸（TA）金属酚网络（mpn）来增强骨重建。这种复合支架能够持续和控制Zn和Ce离子的释放，从而促进骨生成和血管生成，同时提供抗菌和抗氧化保护。此外，Zn@dTNT/Ce-TA有效清除线粒体和外源性ROS，稳定骨缺损部位的微环境。总的来说，本研究为修复临界尺寸骨缺损和管理ros相关骨病提供了一种有前景的策略，为未来的骨组织工程提供了有价值的方向。

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引用次数: 0

Laser in-situ re-melting induced porosity control and fatigue improvement in LPBFed high-strength Sc-containing aluminum alloy 激光原位重熔诱导LPBFed高强含sc铝合金气孔控制及疲劳改善

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-12-30 DOI: 10.1016/j.matdes.2025.115415

Fei Lv , Pengbo Gao , Xuesong Gao , Meng Xiao , Deqiao Xie , Jun Zhou , Kai Wang

High-strength aluminum alloys are attractive for aerospace but suffer fatigue failure from porosity introduced during laser powder bed fusion (LPBF). In this study, a Sc-containing alloy was fabricated to near-full density, and the effects of enhancement aging (EA) and laser in-situ re-melting (RE) on microstructure, tensile, and high-cycle fatigue (HCF) properties were compared with the as-built (AB) condition. All samples exhibited a bi-modal grain structure of fine equiaxed grains at molten pool boundaries and coarse columnar grains inside the pools. XRD/TEM revealed coherent AlsSc precipitates that refined grains and improved stability. EA achieved the highest tensile strength (574 MPa) due to secondary Al₃Sc precipitation and Mn-rich solid solution, while RE gave slightly lower strength (545 MPa) but superior fatigue strength (115 MPa at 10⁷ cycles). Three-dimensional (3D) μCT showed that irregular pores > 20 μm persisted in AB and EA samples as fatigue crack initiation sites, whereas RE markedly reduced their number and size. Thermal modeling indicated that RE stabilized the molten pool, suppressed keyhole instabilities, and promoted pore elimination. Acting as an integrated heat treatment, laser in-situ re-melting improves fatigue resistance while simplifying the LPBF process.

高强度铝合金在航空航天领域具有广泛的应用前景，但在激光粉末床熔合（LPBF）过程中引入的孔隙率会导致疲劳失效。本研究将含sc合金制备至接近全密度，比较了增强时效（EA）和激光原位重熔（RE）对合金组织、拉伸和高周疲劳（HCF）性能的影响。所有样品均表现出熔池边界细小等轴晶粒和熔池内部粗柱状晶粒的双峰型晶粒结构。XRD/TEM显示AlsSc析出相细化晶粒，提高了稳定性。由于二次Al3Sc析出和富mn固溶体的存在，EA合金的抗拉强度最高（574 MPa），而RE合金的抗拉强度略低（545 MPa），但在107次循环下的疲劳强度较高（115 MPa）。三维μCT （3D μCT）显示，AB和EA试样中仍存在20 μm的不规则孔隙作为疲劳裂纹起裂点，而RE显著降低了其数量和大小。热模拟表明，RE稳定了熔池，抑制了锁孔的不稳定性，促进了孔的消除。作为一种综合热处理，激光原位重熔在简化LPBF工艺的同时提高了抗疲劳性。

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引用次数: 0

Rationalising the effect of post-additive manufacturing heat treatment on the deformation behaviour in Ti-34Nb-13Ta-5Zr-0.3O alloy using synchrotron diffraction 利用同步加速器衍射技术对Ti-34Nb-13Ta-5Zr-0.3O合金增材后热处理对变形行为的影响进行了合理化研究

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-12-29 DOI: 10.1016/j.matdes.2025.115407

Peter Ibrahim , Konstantinos Liogas , Muhammad Naeem , Alexander M. Korsunsky , Richard J. Moat , Moataz M. Attallah

β-Ti alloys have been recognised as promising candidates for variety of applications such as biomedical implants and aerospace morphing wings. Alloy systems such as Ti-Nb-Ta-Zr manufactured by Laser Powder Bed Fusion offer great opportunities for custom parts and design optimisation to best fit the application. In this study, in-situ tensile testing of built Ti-34Nb-13Ta-5Zr-0.3O samples was conducted with the aid of Synchrotron X-ray diffraction to investigate the effect of heat treatment on the deformation behaviour. The analysis of β-phase in different conditions showed increasing elastic moduli for each lattice plane. This modulus variations are related to elimination of segregated elements and the increasing alloy homogeneity during solution treatment. Also, α-needles developed during aging had a hardening effect. Aged condition showed stress partitioning between α and β planes where the β phase failed while α phase kept up to higher stress levels. The analysis showed the high amount of dislocation in the as-built samples due to the high residual strains, which were relieved by solution treatment, explaining the increased macro-ductility of the solution treated samples. The study highlights the role of the heat treatment in controlling the macro scale mechanical behaviour through impacting both the microstructure and sub-structure.

β-钛合金已被认为是各种应用的有前途的候选人，如生物医学植入物和航空航天变形翼。由激光粉末床融合制造的Ti-Nb-Ta-Zr等合金系统为定制零件和设计优化提供了巨大的机会，以最适合应用。本研究利用同步x射线衍射对Ti-34Nb-13Ta-5Zr-0.3O预制试样进行原位拉伸试验，研究热处理对试样变形行为的影响。对β相在不同条件下的分析表明，各晶格面的弹性模量均有所增加。这种模量变化与固溶处理过程中分离元素的消除和合金均匀性的提高有关。在时效过程中形成的α-针状结构具有硬化作用。老化状态下，应力在α和β平面上划分，β相失效，α相保持较高的应力水平。分析结果表明，固溶处理后，由于残余应变较大，构建试样中出现了大量的位错，而固溶处理后，这些位错得到了缓解，这解释了固溶处理后试样的宏观塑性增加。研究强调了热处理通过影响微观组织和子结构来控制宏观力学行为的作用。

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引用次数: 0

Upcycling potential of the material extrusion process: a focus on the fused deposition modeling and beyond 材料挤压过程的升级回收潜力：重点关注熔融沉积建模和超越

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-12-29 DOI: 10.1016/j.matdes.2025.115408

Raffaele Pugliese , Mushtaq Alam Madar Saheb , Stefano Cantella , Silvia Badini , Carlotta Bollati , Carmen Lammi , Serena Graziosi

This study reviews the transformability potential of the Material Extrusion (MEX) process as a possible contributor to circular manufacturing by facilitating plastic upcycling and biomass valorization. MEX makes the use of recycled thermoplastics as feedstock and their blending with reinforcement or functionalizing fillers feasible, opening ground-breaking routes to the development of sustainable composite materials. Biomass waste, as filler, can reinforce the thermoplastic matrix but also provide antibacterial, regenerative, and wound-healing properties to the composites. Examples of already developed materials, potential applications, and a focus on four thermoplastic materials (i.e., Polylactic Acid − PLA, Polyhydroxyalkanoates − PHAs, Polycaprolactone − PCL, and Polyvinyl alcohol − PVA) are provided. The discussion focuses on the Fused Deposition Modeling technique and includes the Fused Granulate Fabrication technique. The challenges persisting in material design, fabrication, and printing, limiting functionality and performance, are highlighted to stimulate further research into optimizing all steps of the upcycling process. The contribution of Artificial Intelligence (AI) in pursuing this target, by supporting MEX-related workflows, from optimizing printing parameters and predicting material performance to enhancing the reliability of recycled feedstocks and enabling more effective circular material cycles, is also analyzed.

本研究回顾了材料挤压（MEX）工艺的转化潜力，通过促进塑料升级回收和生物质增值，可能对循环制造做出贡献。MEX将回收的热塑性塑料作为原料，并将其与增强剂或功能化填料混合，为可持续复合材料的发展开辟了开创性的道路。生物质废弃物作为填料，可以增强热塑性基质，同时也为复合材料提供抗菌、再生和伤口愈合性能。提供了已经开发的材料，潜在应用的例子，并重点关注四种热塑性材料（即聚乳酸- PLA，聚羟基烷酸酯- pha，聚己内酯- PCL和聚乙烯醇- PVA）。讨论的重点是熔融沉积建模技术，包括熔融颗粒制造技术。强调了材料设计、制造和印刷中持续存在的挑战，限制了功能和性能，以刺激进一步研究优化升级回收过程的所有步骤。还分析了人工智能（AI）在实现这一目标方面的贡献，通过支持与mexs相关的工作流程，从优化印刷参数和预测材料性能到提高回收原料的可靠性和实现更有效的循环材料循环。

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引用次数: 0

Harnessing waves with folds: a flexible origami-inspired wave energy converter 利用波浪的折叠：一个灵活的折纸启发的波浪能量转换器

IF 7.9 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design

Pub Date : 2025-12-29 DOI: 10.1016/j.matdes.2025.115411

Jingyi Yang , Zhong You , Maozhou Meng , Tom Tosdevin , Alistair G.L. Borthwick , John R. Chaplin , Bohan Chen , Siming Zheng , Martyn Hann , Shanshan Cheng , Xinyu Wang , Krishnendu Puzhukkil , Malcolm Cox , Kieran Monk , Deborah M. Greaves

Ocean waves offer sustainable power yet the design of efficient and durable wave energy converters (WECs) remains challenging. We focus on a WEC that harvests energy from chamber volume change as two bottom-hinged plates open and close with passing wave troughs and crests, driving a turbine generator. For the first time, we present an origami-inspired enclosed WEC whose plates are linked by rigid pleats and confined membrane regions. Unlike traditional flexible WECs that connect the flaps with elastic membranes that stretch, our design achieves predictable cyclic motion through origami folding mechanisms. Using an analytical design method, we optimize dimensions of the pleats and membranes that keep membrane strain minimal during operation. The analytical design is confirmed by finite element analyses, which indicates negligible membrane strain under normal operation, therefore long fatigue life. Tests on a 1:160 scale prototype achieve a capture width ratio of 0.35 and demonstrate robustness under irregular waves and deliberate misalignment. Our WEC design allows the power take-off (PTO) system to be positioned above sea level, ensuring the PTO system operates in air and remains unaffected even if sealing fails. These results demonstrate the potential of origami-inspired WECs as viable and scalable approaches to wave energy harvesting.

海浪提供了可持续的动力，但高效耐用的波浪能转换器（WECs）的设计仍然具有挑战性。我们关注的是一种WEC，它通过两个底部铰链板通过波谷和波峰打开和关闭，驱动涡轮发电机，从腔室的体积变化中获取能量。我们首次提出了一种折纸启发的封闭WEC，其板由刚性褶皱和受限膜区域连接。与传统的柔性WECs不同，我们的设计通过折纸折叠机制实现了可预测的循环运动。使用分析设计方法，我们优化了褶皱和膜的尺寸，使膜在操作过程中应变最小。有限元分析证实了分析设计，正常工作时膜应变可忽略不计，疲劳寿命长。在1:160比例原型上的测试实现了0.35的捕获宽度比，并证明了不规则波浪和故意不对准下的鲁棒性。我们的WEC设计允许动力起飞（PTO）系统位于海平面以上，确保PTO系统在空气中运行，即使密封失效也不受影响。这些结果证明了折纸启发的WECs作为可行和可扩展的波浪能量收集方法的潜力。

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引用次数: 0