International Journal of Extreme Manufacturing最新文献_第5页

Functional microfluidics: theory, microfabrication, and applications 功能微流体：理论、微制造和应用

IF 14.7 1区工程技术 Q1 Engineering

International Journal of Extreme Manufacturing

Pub Date : 2024-02-22 DOI: 10.1088/2631-7990/ad2c5f

Mingzhu Xie, Ziheng Zhan, Yinfeng Li, Junkai Zhao, Ce Zhang, Zhaolong Wang, Zuankai Wang

Microfluidic devices are composed of microchannels with a diameter ranging in ten to a few hundred micrometers. Thus, quite small (10-9 to 10-18 litres) amount of liquid can be manipulated by such a precise system. In the past three decades, significant progresses in materials, microfabrication, and various applications have boosted the development of promising functional microfluidic devices. In this review, the recent progresses on novel microfluidic devices with various functions and applications are presented. First, the theory and numerical methods for studying the performance of microfluidic devices are briefly introduced. Then, materials, and fabrication methods of functional microfluidic devices are summarized. Next, from the viewpoint of the applications of the microfluidic devices, the recent significant advances in heat sink, clean water production, chemical reactions, sensor, biomedical field, capillaric circuits, flexible and wearable electronic devices, microrobotics, etc., in turns are then highlighted. Finally, personal perspectives on the challenges and future developments of functional microfluidic devices, aiming to motivate researchers from the fields of engineering, materials, chemistry, mathematics, physics, etc. working together to promote further development and applications of functional microfluidic devices, for the specific purpose of carbon neutrality are provided.

微流体设备由直径在 10 微米到几百微米之间的微通道组成。因此，这种精确的系统可以操纵相当小量（10-9 至 10-18 升）的液体。在过去的三十年里，材料、微细加工和各种应用方面的重大进展推动了功能性微流体设备的发展。本综述介绍了具有各种功能和应用的新型微流控器件的最新进展。首先，简要介绍研究微流控器件性能的理论和数值方法。然后，总结了功能微流控器件的材料和制造方法。接着，从微流控器件的应用角度，依次重点介绍了近年来在散热、洁净水生产、化学反应、传感器、生物医学领域、毛细管电路、柔性和可穿戴电子设备、微机器人等方面取得的重大进展。最后，对功能性微流体设备面临的挑战和未来发展提出了个人观点，旨在激励工程、材料、化学、数学、物理等领域的研究人员共同努力，促进功能性微流体设备的进一步发展和应用，实现碳中和的特定目的。

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引用次数: 1

Field-assisted machining of difficult-to-machine materials 难加工材料的现场辅助加工

IF 14.7 1区工程技术 Q1 Engineering

International Journal of Extreme Manufacturing

Pub Date : 2024-02-22 DOI: 10.1088/2631-7990/ad2c5e

Jianguo Zhang, Zheng Zheng, Kai Huang, Chuangting Lin, Weiqi Huang, Xiao Chen, Junfeng Xiao, Jianfeng Xu

Difficult-to-machine materials (DMMs) are extensively applied in critical fields such as aviation, national defense, biomedicine, and other key fields due to their excellent material properties. However, traditional machining technology is difficult to precisely machine DMMs due to poor surface quality and low processing efficiency. In recent years, as a new generation of machining technology, field-assisted machining (FAM) technology based on innovative principles such as laser heating, tool vibration, magnetic magnetization, and plasma modification provides a new solution for improving the machinability of DMMs. It is advantageous to prevent the shortcomings of traditional machining methods, and has become a hot topic of research in the domain of ultra-precision machining of DMMs. Many new methods and principles have been presented and investigated one after another, yet few researches have been analysed and summarized from a comprehensive standpoint. To fill this gap and understand the development trend of FAM, this study provides an important overview of FAM, covering different assisted machining methods, application effects, mechanism analysis, and equipment design. The current deficiencies and future challenges of FAM are summarized to lay the foundation for the further development of multi-field hybrid assisted and intelligent field-assisted machining technologies.

难加工材料（DMM）因其优异的材料特性被广泛应用于航空、国防、生物医药等关键领域。然而，由于表面质量差、加工效率低，传统加工技术难以对 DMM 进行精确加工。近年来，作为新一代加工技术，基于激光加热、刀具振动、磁化和等离子改性等创新原理的场辅助加工（FAM）技术为提高 DMM 的可加工性提供了新的解决方案。它能有效避免传统加工方法的缺陷，已成为 DMM 超精密加工领域的热门研究课题。许多新方法和新原理被相继提出和研究，但很少有研究从全面的角度进行分析和总结。为了填补这一空白，了解 FAM 的发展趋势，本研究对 FAM 进行了重要概述，涵盖了不同的辅助加工方法、应用效果、机理分析和设备设计。总结了 FAM 目前存在的不足和未来面临的挑战，为多场混合辅助和智能场辅助加工技术的进一步发展奠定了基础。

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引用次数: 0

High-performance liquid metal electromagnetic actuator fabricated by femtosecond laser 利用飞秒激光制造的高性能液态金属电磁致动器

IF 14.7 1区工程技术 Q1 Engineering

International Journal of Extreme Manufacturing

Pub Date : 2024-02-21 DOI: 10.1088/2631-7990/ad23ee

Yiyu Chen, Hao Wu, Rui Li, Shaojun Jiang, Shuneng Zhou, Zehang Cui, Yuan Tao, Xinyuan Zheng, Qianqian Zhang, Jiawen Li, Guoqiang Li, Dong Wu, Jiaru Chu, Yanlei Hu

Small-scale electromagnetic soft actuators are characterized by a fast response and simple control, holding prospects in the field of soft and miniaturized robotics. The use of liquid metal (LM) to replace a rigid conductor inside soft actuators can reduce the rigidity and enhance the actuation performance and robustness. Despite research efforts, challenges persist in the flexible fabrication of LM soft actuators and in the improvement of actuation performance. To address these challenges, we developed a fast and robust electromagnetic soft microplate actuator based on a laser-induced selective adhesion transfer method. Equipped with unprecedentedly thin LM circuit and customized low Young’s modulus silicone rubber (1.03 kPa), our actuator exhibits an excellent deformation angle (265.25°) and actuation bending angular velocity (284.66 rad·s−1). Furthermore, multiple actuators have been combined to build an artificial gripper with a wide range of functionalities. Our actuator presents new possibilities for designing small-scale artificial machines and supports advancements in ultrafast soft and miniaturized robotics.

小型电磁软致动器具有响应速度快、控制简单的特点，在软机器人和微型机器人领域具有广阔的发展前景。使用液态金属（LM）替代软致动器内部的刚性导体，可以降低刚性，提高致动性能和鲁棒性。尽管开展了大量研究工作，但在灵活制造液态金属软致动器和提高致动性能方面仍存在挑战。为了应对这些挑战，我们开发了一种基于激光诱导选择性粘附转移方法的快速、坚固的电磁软微孔板致动器。我们的致动器配备了前所未有的超薄 LM 电路和定制的低杨氏模量硅橡胶（1.03 kPa），具有出色的变形角度（265.25°）和致动弯曲角速度（284.66 rad-s-1）。此外，我们还将多个致动器组合在一起，构建了一个具有多种功能的人工抓手。我们的致动器为设计小型人工机械提供了新的可能性，并为超快软机器人和微型机器人技术的发展提供了支持。

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引用次数: 0

In-situ additive manufacturing of high strength yet ductility titanium composites with gradient layered structure using N2 利用 N2 原位添加制造具有梯度分层结构的高强度和延展性钛复合材料

IF 14.7 1区工程技术 Q1 Engineering

International Journal of Extreme Manufacturing

Pub Date : 2024-02-04 DOI: 10.1088/2631-7990/ad2602

Yunmian Xiao, Changhui Song, Zibin Liu, Linqing Liu, Hanxiang Zhou, Di Wang, Yongqiang Yang

It has always been challenging work to reconcile the contradiction between the strength and plasticity of titanium materials. Laser powder bed fusion (LPBF) is a convenient method to fabricate innovative composites including those inspired by gradient layered materials. In this work, we used LPBF to selectively prepare TiN/Ti gradient layered structure (GLSTi) composites by using different N2-Ar ratios during the LPBF process. We systematically investigated the mechanisms of in-situ synthesis TiN, high strength and ductility of GLSTi composites using microscopic analysis, TEM characterization, and tensile testing with digital image correlation. Besides, a digital correspondence was established between the N2 concentration and the volume fraction of LPBF in-situ synthesized TiN. Our results show that the GLSTi composites exhibit superior mechanical properties compared to pure titanium fabricated by LPBF under pure Ar. Specifically, the tensile strength of GLSTi was more than 1.5 times higher than that of LPBF-formed pure titanium, reaching up to 1100 MPa, while maintaining a high elongation at fracture of 17%. GLSTi breaks the bottleneck of high strength but low ductility exhibited by conventional nanoceramic particle-strengthened titanium matrix composites, and the hetero-deformation induced strengthening effect formed by the TiN/Ti layered structure explained its strength-plasticity balanced principle. The microhardness exhibits a jagged variation of the relatively low hardness of 245 HV0.2 for the pure titanium layer and a high hardness of 408 HV0.2 for the N2 in-situ synthesis layer. Our study provides a new concept for the structure-performance digital customization of 3D-printed Ti-based composites.

如何协调钛材料强度与塑性之间的矛盾一直是一项具有挑战性的工作。激光粉末床熔融（LPBF）是制造创新复合材料（包括受梯度层状材料启发的复合材料）的一种便捷方法。在这项工作中，我们利用 LPBF，通过在 LPBF 过程中使用不同的 N2-Ar 比率，选择性地制备了 TiN/Ti 梯度层状结构 (GLSTi) 复合材料。我们利用显微分析、TEM表征和数字图像相关拉伸测试系统地研究了原位合成TiN的机理、GLSTi复合材料的高强度和延展性。此外，还建立了 N2 浓度与 LPBF 原位合成 TiN 体积分数之间的数字对应关系。结果表明，与纯氩气条件下通过 LPBF 制造的纯钛相比，GLSTi 复合材料表现出更优越的机械性能。具体而言，GLSTi 的拉伸强度比 LPBF 制成的纯钛高出 1.5 倍以上，达到 1100 兆帕，同时保持了 17% 的高断裂伸长率。GLSTi 打破了传统纳米陶瓷颗粒强化钛基复合材料强度高、延展性低的瓶颈，TiN/Ti 层状结构形成的异变形诱导强化效应解释了其强度-塑性平衡原理。显微硬度呈锯齿状变化，纯钛层硬度相对较低，为 245 HV0.2，而 N2 原位合成层硬度较高，为 408 HV0.2。我们的研究为三维打印钛基复合材料的结构-性能数字化定制提供了一个新概念。

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引用次数: 0

In-situ additive manufacturing of high strength yet ductility titanium composites with gradient layered structure using N2 利用 N2 原位添加制造具有梯度分层结构的高强度和延展性钛复合材料

IF 14.7 1区工程技术 Q1 Engineering

International Journal of Extreme Manufacturing

Pub Date : 2024-02-04 DOI: 10.1088/2631-7990/ad2602

Yunmian Xiao, Changhui Song, Zibin Liu, Linqing Liu, Hanxiang Zhou, Di Wang, Yongqiang Yang

It has always been challenging work to reconcile the contradiction between the strength and plasticity of titanium materials. Laser powder bed fusion (LPBF) is a convenient method to fabricate innovative composites including those inspired by gradient layered materials. In this work, we used LPBF to selectively prepare TiN/Ti gradient layered structure (GLSTi) composites by using different N2-Ar ratios during the LPBF process. We systematically investigated the mechanisms of in-situ synthesis TiN, high strength and ductility of GLSTi composites using microscopic analysis, TEM characterization, and tensile testing with digital image correlation. Besides, a digital correspondence was established between the N2 concentration and the volume fraction of LPBF in-situ synthesized TiN. Our results show that the GLSTi composites exhibit superior mechanical properties compared to pure titanium fabricated by LPBF under pure Ar. Specifically, the tensile strength of GLSTi was more than 1.5 times higher than that of LPBF-formed pure titanium, reaching up to 1100 MPa, while maintaining a high elongation at fracture of 17%. GLSTi breaks the bottleneck of high strength but low ductility exhibited by conventional nanoceramic particle-strengthened titanium matrix composites, and the hetero-deformation induced strengthening effect formed by the TiN/Ti layered structure explained its strength-plasticity balanced principle. The microhardness exhibits a jagged variation of the relatively low hardness of 245 HV0.2 for the pure titanium layer and a high hardness of 408 HV0.2 for the N2 in-situ synthesis layer. Our study provides a new concept for the structure-performance digital customization of 3D-printed Ti-based composites.

如何协调钛材料强度与塑性之间的矛盾一直是一项具有挑战性的工作。激光粉末床熔融（LPBF）是制造创新复合材料（包括受梯度层状材料启发的复合材料）的一种便捷方法。在这项工作中，我们利用 LPBF，通过在 LPBF 过程中使用不同的 N2-Ar 比率，选择性地制备了 TiN/Ti 梯度层状结构 (GLSTi) 复合材料。我们利用显微分析、TEM表征和数字图像相关拉伸测试系统地研究了原位合成TiN的机理、GLSTi复合材料的高强度和延展性。此外，还建立了 N2 浓度与 LPBF 原位合成 TiN 体积分数之间的数字对应关系。结果表明，与纯氩气条件下通过 LPBF 制造的纯钛相比，GLSTi 复合材料表现出更优越的机械性能。具体而言，GLSTi 的拉伸强度比 LPBF 制成的纯钛高出 1.5 倍以上，达到 1100 兆帕，同时保持了 17% 的高断裂伸长率。GLSTi 打破了传统纳米陶瓷颗粒强化钛基复合材料强度高、延展性低的瓶颈，TiN/Ti 层状结构形成的异变形诱导强化效应解释了其强度-塑性平衡原理。显微硬度呈锯齿状变化，纯钛层硬度相对较低，为 245 HV0.2，而 N2 原位合成层硬度较高，为 408 HV0.2。我们的研究为三维打印钛基复合材料的结构-性能数字化定制提供了一个新概念。

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引用次数: 0

Recent Innovations in Laser Additive Manufacturing of Titanium Alloys 钛合金激光快速成型技术的最新创新

IF 14.7 1区工程技术 Q1 Engineering

International Journal of Extreme Manufacturing

Pub Date : 2024-02-02 DOI: 10.1088/2631-7990/ad2545

Jinlong Su, Fulin Jiang, Jie Teng, Lequn Chen, Ming Yan, Guillermo Requena, Laichang Zhang, Y. M. Wang, Ilya Okulov, Hongmei Zhu, Chaolin Tan

Titanium (Ti) alloys are widely used in frontier fields like aerospace and biomedical engineering. Laser additive manufacturing (LAM), as an innovative technology, is the key driver for the development of Ti alloys. Despite the significant advancements in LAM of Ti alloys, there remain challenges that need further research and development efforts. To recap the potential of LAM high-performance Ti alloy, this article systematically reviews LAM Ti alloys with up-to-date information on process, materials, and properties. Several feasible solutions to advance LAM Ti alloys were reviewed, including intelligent process parameters optimization, LAM process innovation with auxiliary fields and novel Ti alloys customization for LAM. The auxiliary energy fields (e.g., thermal, acoustic, mechanical deformation and magnetic fields) that can be applied during LAM Ti alloys affect the melt pool dynamics and solidification behaviour, altering microstructures and mechanical performances. Different kinds of novel Ti alloys customized for LAM, like peritectic α-Ti, eutectoid (α+β)-Ti, hybrid (α+β)-Ti, isomorphous β-Ti and eutectic β-Ti alloys are reviewed in detail. Furthermore, machine learning in accelerating the LAM process optimization and new materials development is also outlooked. The review summarizes the material properties and performance envelops and benchmarks the research achievements in LAM of Ti alloys. In addition, the perspectives and further trends in LAM of Ti alloys are also highlighted.

钛（Ti）合金被广泛应用于航空航天和生物医学工程等前沿领域。激光增材制造（LAM）作为一种创新技术，是钛合金发展的关键驱动力。尽管钛合金的激光增材制造技术取得了重大进展，但仍存在需要进一步研发的挑战。为了总结 LAM 高性能钛合金的潜力，本文系统回顾了 LAM 钛合金在工艺、材料和性能方面的最新信息。文章回顾了推进 LAM Ti 合金的几种可行解决方案，包括智能工艺参数优化、利用辅助能量场进行 LAM 工艺创新以及为 LAM 定制新型 Ti 合金。在 LAM Ti 合金过程中可应用的辅助能量场（如热场、声场、机械变形场和磁场）会影响熔池动力学和凝固行为，从而改变微观结构和机械性能。本文详细综述了为 LAM 定制的各种新型钛合金，如共晶 α-Ti、共晶（α+β）-Ti、混合（α+β）-Ti、同构 β-Ti 和共晶 β-Ti 合金。此外，还展望了机器学习在加速 LAM 工艺优化和新材料开发方面的作用。综述总结了材料特性和性能范围，并对钛合金 LAM 方面的研究成果进行了基准测试。此外，还强调了钛合金 LAM 的前景和未来趋势。

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引用次数: 0

Recent Innovations in Laser Additive Manufacturing of Titanium Alloys 钛合金激光快速成型技术的最新创新

IF 14.7 1区工程技术 Q1 Engineering

International Journal of Extreme Manufacturing

Pub Date : 2024-02-02 DOI: 10.1088/2631-7990/ad2545

Jinlong Su, Fulin Jiang, Jie Teng, Lequn Chen, Ming Yan, Guillermo Requena, Laichang Zhang, Y. M. Wang, Ilya Okulov, Hongmei Zhu, Chaolin Tan

Titanium (Ti) alloys are widely used in frontier fields like aerospace and biomedical engineering. Laser additive manufacturing (LAM), as an innovative technology, is the key driver for the development of Ti alloys. Despite the significant advancements in LAM of Ti alloys, there remain challenges that need further research and development efforts. To recap the potential of LAM high-performance Ti alloy, this article systematically reviews LAM Ti alloys with up-to-date information on process, materials, and properties. Several feasible solutions to advance LAM Ti alloys were reviewed, including intelligent process parameters optimization, LAM process innovation with auxiliary fields and novel Ti alloys customization for LAM. The auxiliary energy fields (e.g., thermal, acoustic, mechanical deformation and magnetic fields) that can be applied during LAM Ti alloys affect the melt pool dynamics and solidification behaviour, altering microstructures and mechanical performances. Different kinds of novel Ti alloys customized for LAM, like peritectic α-Ti, eutectoid (α+β)-Ti, hybrid (α+β)-Ti, isomorphous β-Ti and eutectic β-Ti alloys are reviewed in detail. Furthermore, machine learning in accelerating the LAM process optimization and new materials development is also outlooked. The review summarizes the material properties and performance envelops and benchmarks the research achievements in LAM of Ti alloys. In addition, the perspectives and further trends in LAM of Ti alloys are also highlighted.

钛（Ti）合金被广泛应用于航空航天和生物医学工程等前沿领域。激光增材制造（LAM）作为一项创新技术，是钛合金发展的关键驱动力。尽管钛合金的激光增材制造技术取得了重大进展，但仍存在需要进一步研发的挑战。为了总结 LAM 高性能钛合金的潜力，本文系统回顾了 LAM 钛合金在工艺、材料和性能方面的最新信息。文章回顾了推进 LAM Ti 合金的几种可行解决方案，包括智能工艺参数优化、利用辅助能量场进行 LAM 工艺创新以及为 LAM 定制新型 Ti 合金。在 LAM Ti 合金过程中可应用的辅助能量场（如热场、声场、机械变形场和磁场）会影响熔池动力学和凝固行为，从而改变微观结构和机械性能。本文详细综述了为 LAM 定制的各种新型钛合金，如共晶 α-Ti、共晶（α+β）-Ti、混合（α+β）-Ti、同构 β-Ti 和共晶 β-Ti 合金。此外，还展望了机器学习在加速 LAM 工艺优化和新材料开发方面的作用。综述总结了材料特性和性能范围，并对钛合金 LAM 方面的研究成果进行了基准测试。此外，还强调了钛合金 LAM 的前景和未来趋势。

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引用次数: 0

Additively manufactured Ti-Ta-Cu alloys for the next-generation load-bearing implants. 增材制造的Ti-Ta-Cu合金用于下一代承重植入物。

IF 14.7 1区工程技术 Q1 Engineering

International Journal of Extreme Manufacturing

Pub Date : 2024-02-01 Epub Date: 2023-11-17 DOI: 10.1088/2631-7990/ad07e7

Amit Bandyopadhyay, Indranath Mitra, Sushant Ciliveri, Jose D Avila, William Dernell, Stuart B Goodman, Susmita Bose

Bacterial colonization of orthopedic implants is one of the leading causes of failure and clinical complexities for load-bearing metallic implants. Topical or systemic administration of antibiotics may not offer the most efficient defense against colonization, especially in the case of secondary infection, leading to surgical removal of implants and in some cases even limbs. In this study, laser powder bed fusion was implemented to fabricate Ti3Al2V alloy by a 1:1 weight mixture of CpTi and Ti6Al4V powders. Ti-Tantalum (Ta)-Copper (Cu) alloys were further analyzed by the addition of Ta and Cu into the Ti3Al2V custom alloy. The biological, mechanical, and tribo-biocorrosion properties of Ti3Al2V alloy were evaluated. A 10 wt.% Ta (10Ta) and 3 wt.% Cu (3Cu) were added to the Ti3Al2V alloy to enhance biocompatibility and impart inherent bacterial resistance. Additively manufactured implants were investigated for resistance against Pseudomonas aeruginosa and Staphylococcus aureus strains of bacteria for up to 48 h. A 3 wt.% Cu addition to Ti3Al2V displayed improved antibacterial efficacy, i.e. 78%-86% with respect to CpTi. Mechanical properties for Ti3Al2V-10Ta-3Cu alloy were evaluated, demonstrating excellent fatigue resistance, exceptional shear strength, and improved tribological and tribo-biocorrosion characteristics when compared to Ti6Al4V. In vivo studies using a rat distal femur model revealed improved early-stage osseointegration for alloys with 10 wt.% Ta addition compared to CpTi and Ti6Al4V. The 3 wt.% Cu-added compositions displayed biocompatibility and no adverse inflammatory response in vivo. Our results establish the Ti3Al2V-10Ta-3Cu alloy's synergistic effect on improving both in vivo biocompatibility and microbial resistance for the next generation of load-bearing metallic implants.

细菌定植骨科种植体是一个主要原因失败和临床复杂的负荷金属种植体。局部或全身施用抗生素可能不能提供最有效的防御定植，特别是在继发性感染的情况下，导致手术切除植入物，在某些情况下甚至是肢体。在本研究中，采用激光粉末床熔接技术，将CpTi和Ti6Al4V粉末以1:1的重量混合制备Ti3Al2V合金。通过在Ti3Al2V定制合金中加入Ta和Cu，进一步分析了ti -钽(Ta)-铜(Cu)合金。对Ti3Al2V合金的生物、力学和摩擦-生物腐蚀性能进行了评价。在Ti3Al2V合金中加入10 wt.%的Ta (10Ta)和3 wt.%的Cu (3Cu)来增强生物相容性并赋予其固有的细菌抗性。研究了增材制造的植入物对铜绿假单胞菌和金黄色葡萄球菌菌株的耐药性长达48 h。添加3wt .% Cu的Ti3Al2V对CpTi的抗菌效果提高了78%-86%。对Ti3Al2V-10Ta-3Cu合金的力学性能进行了评估，结果表明，与Ti6Al4V相比，Ti3Al2V-10Ta-3Cu合金具有优异的抗疲劳性能、优异的抗剪切强度，以及更好的摩擦学和摩擦生物腐蚀特性。使用大鼠股骨远端模型进行的体内研究显示，与CpTi和Ti6Al4V相比，添加10% wt.% Ta的合金可以改善早期骨整合。添加3 wt.% cu的组合物在体内表现出生物相容性和无不良炎症反应。我们的研究结果表明，Ti3Al2V-10Ta-3Cu合金在提高下一代承重金属植入体的体内生物相容性和微生物耐药性方面具有协同效应。

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引用次数: 0

3D printing in space: from mechanical structures to living tissues 太空 3D 打印：从机械结构到活体组织

IF 14.7 1区工程技术 Q1 Engineering

International Journal of Extreme Manufacturing

Pub Date : 2024-01-30 DOI: 10.1088/2631-7990/ad23ef

Mao Mao, Zijie Meng, Xinxin Huang, Hui Zhu, Lei Wang, Xiaoyong Tian, Jiankang He, Dichen Li, Bingheng Lu

3D printing stands at the forefront of transforming space exploration, offering unprecedented on-demand and rapid manufacturing capabilities. It adeptly addresses challenges such as mass reduction, intricate component fabrication, and resource constraints. Despite the obstacles posed by microgravity and extreme environments, continual advancements underscore the pivotal role of 3D printing in aerospace science. Beyond its primary function of producing space structures, 3D printing contributes significantly to progress in electronics, biomedicine, and resource optimization. This perspective delves into the technological advantages, environmental challenges, development status, and opportunities of 3D printing in space. Envisioning its crucial impact, we anticipate that 3D printing will unlock innovative solutions, reshape manufacturing practices, and foster self-sufficiency in future space endeavors.

三维打印技术站在了改变太空探索的前沿，提供了前所未有的按需快速制造能力。它巧妙地解决了诸如减少质量、复杂部件制造和资源限制等挑战。尽管存在微重力和极端环境带来的障碍，但三维打印技术的不断进步凸显了其在航空航天科学中的关键作用。除了生产空间结构的主要功能外，3D 打印还对电子学、生物医学和资源优化方面的进步做出了重大贡献。本视角深入探讨了 3D 打印在太空中的技术优势、环境挑战、发展现状和机遇。展望三维打印技术的重要影响，我们预计三维打印技术将开启创新解决方案，重塑制造实践，并促进未来太空事业的自给自足。

引用次数: 0

Self-propelled Leidenfrost droplets on femtosecond-laser-induced surface with periodic hydrophobicity gradient 具有周期性疏水性梯度的飞秒激光诱导表面上的自推进莱顿弗罗斯特液滴

IF 14.7 1区工程技术 Q1 Engineering

International Journal of Extreme Manufacturing

Pub Date : 2024-01-30 DOI: 10.1088/2631-7990/ad18fb

Bohong Li, Lan Jiang, Xiaowei Li, Zhipeng Wang, Peng Yi

A surface with periodic hydrophobicity gradient (SPHG) is fabricated by shaped femtosecond laser. The directional self-propulsion of the Leidenfrost droplets is realized. The viscous gradient force between gas and liquid is used to drive the droplet to move. A brand-new method for controlling the movement of droplets is provided.

利用成型飞秒激光制造出了具有周期性疏水梯度（SPHG）的表面。莱顿弗罗斯特液滴的定向自推进得以实现。气体和液体之间的粘性梯度力被用来驱动液滴移动。这提供了一种控制液滴运动的全新方法。

引用次数: 0