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Superior high-temperature mechanical properties and microstructural features of LPBF-printed In625-based metal matrix composites LPBF 印刷 In625 基金属基复合材料优异的高温力学性能和微观结构特征
IF 21.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.1016/j.mattod.2024.09.006
Emre Tekoglu , Jong-Soo Bae , Ho-A Kim , Kwang-Hyeok Lim , Jian Liu , Tyler D. Doležal , So Yeon Kim , Mohammed A. Alrizqi , Aubrey Penn , Wen Chen , A. John Hart , Joo-Hee Kang , Chang-Seok Oh , Jiwon Park , Fan Sun , Sangtae Kim , Gi-Dong Sim , Ju Li
The growing demands for high-temperature materials, especially in aerospace and energy production, compel thorough explorations of innovative materials. Here, we demonstrate significantly enhanced high-temperature mechanical properties of Inconel 625 (In625) based metal matrix composites (MMCs) fabricated by laser powder bed fusion (LPBF) additive manufacturing. The MMC feedstocks for LPBF were fabricated with fine ceramic particles (i.e., titanium diboride (TiB2), titanium carbide (TiC), zirconium diboride (ZrB2) and zirconium carbide (ZrC)) separately mixed with In625 powders. Among the printed specimens, the In625 + TiB2 showed an exceptional strength-ductility combination at 800 °C as well as an outstanding creep resistance at 800 °C under 150 MPa tensile stress. The detailed microstructural characterization, along with thermodynamic calculation and atomic simulations, reveal that the addition of TiB2 results in the formation of serrated grain boundaries, (Cr, Mo)-boride phases near the grain boundaries, and nano-dispersed (Ti, Al, Nb)-oxide phases within the matrix. These features effectively suppress the formation of detrimental high-temperature phases and enhance the material’s high-temperature properties. Beyond amplifying the inherent thermal attributes of In625 superalloy, the research highlights the transformative potential of boride doping and the composition design of MMCs specifically for the LPBF process.
对高温材料日益增长的需求,尤其是在航空航天和能源生产领域,迫使人们对创新材料进行深入探索。在此,我们展示了通过激光粉末床熔融(LPBF)增材制造技术制造的基于铬镍铁合金 625(In625)的金属基复合材料(MMCs),其高温机械性能得到了显著增强。用于 LPBF 的金属基复合材料原料是分别与 In625 粉末混合的细陶瓷颗粒(即二硼化钛 (TiB2)、碳化钛 (TiC)、二硼化锆 (ZrB2) 和碳化锆 (ZrC))。在印制的试样中,In625 + TiB2 试样在 800 °C 时显示出卓越的强度-电导率组合,以及在 800 °C 150 兆帕拉伸应力条件下出色的抗蠕变性。详细的微观结构表征以及热力学计算和原子模拟显示,TiB2 的加入导致形成锯齿状晶界、晶界附近的(Cr、Mo)硼化物相以及基体中的纳米分散(Ti、Al、Nb)氧化物相。这些特征有效抑制了有害高温相的形成,增强了材料的高温性能。除了增强 In625 超级合金的固有热属性外,该研究还突出了掺硼的变革潜力,以及专为 LPBF 工艺设计的 MMC 成分。
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引用次数: 0
UV-activated “blue bulbs” for photodecomposition and adsorption of bilirubin: Strategic nanoarchitectonics to remove protein-bound toxins 用于光分解和吸附胆红素的紫外线激活 "蓝灯泡":去除与蛋白质结合的毒素的战略性纳米结构
IF 21.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.1016/j.mattod.2024.09.010
Yilin Wang , Ran Wei , Xijing Yang , Jiahao Liang , Xianda Liu , Shengjun Cheng , Shifan Chen , Ziyue Ling , Yujie Xiao , Yuanting Xu , Weifeng Zhao , Changsheng Zhao
Massive loss of proteins is common in patients on long-term blood purification therapy, there is a strong inverse association between the risk of death and serum albumin concentration. Removing toxins and leaving behind albumin is an arduous task in the field of blood purification. Inspired by the dissociation-transportation process of protein-bound toxins in renal tubule, we propose multi-point photodecomposition accompany with adsorption strategy as a novel treatment modality in hemoperfusion. As a proof of concept, bilirubin is chosen as the research object since it is a typical protein-bound toxin that needs to be transported by strong binding to albumin in blood environment. Interestingly, blue light can efficiently break bilirubin into some highly polar water soluble diazo compounds, the decomposed products of bilirubin are water-soluble and loosely bound to albumin. Herein, graphene quantum dots (GQDs) and polymer science are combined in the nanoarchitectonics processes. The “photodecomposition-adsorption” platform is designed by embedding GQDs in poly (diallyldimethylammonium chloride-acrylamide) (poly (DDAC-AAm) hydrogel (PDMG) microspheres. In order to reduce the influence of cationic polymer on blood component, hyaluronic acid (HA) are coated on the surface of the PDMG (PDMG@HA) microspheres by electrostatic interaction. Owing to the luminescence property of GQDs, the PDMG@HA microspheres emit blue light under ultraviolet activation and decompose bilirubin into water soluble diazo compounds, just like numerous “blue bulbs”. The water-soluble bilirubin debris could be dissociated from albumin and adsorbed by “blue bulbs”, which greatly reduce the metabolic burden on the body. In vitro biocompatibility results demonstrate that the PDMG@HA microspheres show lower protein adsorption and blood cell toxicity than the PDMG microspheres. The photodecomposition and adsorption amount of bilirubin is 187.8 mg/g in vitro. In hyperbilirubinemia rabbit hemoperfusion, the “blue bulbs” remove 70.9 % total bilirubin (TBIL) from plasma and defer the liver damage of biliary obstruction. Notably, the bilirubin photodecomposition is persisted to the end of the treatment, and some of the bilirubin debris have been adsorbed by the “blue bulbs”. The strategy combining both photodecomposition and adsorption opens a new route for the treatment of blood-related diseases.
在长期接受血液净化治疗的患者中,蛋白质的大量流失很常见,死亡风险与血清白蛋白浓度之间存在很强的反比关系。清除毒素并留下白蛋白是血液净化领域的一项艰巨任务。受蛋白结合毒素在肾小管中解离-转运过程的启发,我们提出了多点光分解伴随吸附策略,作为血液灌流中的一种新型治疗模式。胆红素是一种典型的蛋白结合毒素,需要通过与血液环境中的白蛋白强结合来运输,因此我们选择胆红素作为研究对象,以验证这一概念。有趣的是,蓝光可以有效地将胆红素分解成一些极性很强的水溶性重氮化合物,而胆红素的分解产物是水溶性的,与白蛋白结合松散。在这里,石墨烯量子点(GQDs)和高分子科学在纳米架构过程中得到了结合。通过将石墨烯量子点嵌入聚(二烯丙基二甲基氯化铵-丙烯酰胺)(聚(DDAC-AAm)水凝胶(PDMG)微球,设计了 "光分解-吸附 "平台。为了减少阳离子聚合物对血液成分的影响,PDMG(PDMG@HA)微球表面通过静电作用包覆了透明质酸(HA)。由于 GQDs 的发光特性,PDMG@HA 微球在紫外线激活下会发出蓝光,并将胆红素分解成水溶性重氮化合物,就像无数个 "蓝灯泡 "一样。水溶性胆红素碎片可与白蛋白分离,被 "蓝灯泡 "吸附,大大减轻了机体的代谢负担。体外生物相容性结果表明,与 PDMG 微球相比,PDMG@HA 微球的蛋白质吸附性和血细胞毒性更低。在体外,胆红素的光分解和吸附量为 187.8 毫克/克。在高胆红素血症家兔血液灌流中,"蓝球 "能清除血浆中 70.9% 的总胆红素(TBIL),延缓胆道梗阻对肝脏的损害。值得注意的是,胆红素光分解作用一直持续到治疗结束,部分胆红素残渣已被 "蓝球 "吸附。光分解与吸附相结合的策略为治疗血液相关疾病开辟了一条新途径。
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引用次数: 0
A metal anion strategy to induce pyroptosis combined with STING activation to synergistically amplify anti-tumor immunity 金属阴离子诱导热变态反应的策略与 STING 激活相结合,协同增强抗肿瘤免疫力
IF 21.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.1016/j.mattod.2024.07.013
Zifan Pei , Nan Jiang , Fei Gong , Weihao Yang , Jiachen Xu , Bin Yu , Nailin Yang , Jie Wu , Huali Lei , Shumin Sun , Longxiao Li , Zhicheng Liu , Caifang Ni , Liang Cheng
Growing evidence has demonstrated the positive role of bioactive metal ions in enhancing pyroptosis-mediated cancer immunotherapy. However, further amplification of the sustained immune response remains challenging. Herein, by selecting from typical metal anions, we confirmed the significant cytotoxicity and pyroptosis induction potency of vanadate anions, owing to the inhibition of ATPases and disruption of intracellular ion homeostasis. Then, PEGylated bimetallic manganese vanadate nanoparticles (MnVOx) were synthesized for stimulator of interferon genes (STING) pathway-boosted pyroptosis therapy. The vanadate produced from MnVOx degradation inhibited membrane ATPases and induced potassium efflux and calcium overload, resulting in inflammasome activation, mitochondrial damage, and endoplasmic reticulum stress, as well as subsequent robust pyroptotic cell death. The released manganese ions stimulated STING pathway through dendritic cells maturation and type I interferon secretion. This dual strategy triggered strong anti-tumor immunity and promoted immune cell infiltration into the tumor, which further defeated distant tumors in combination with immune checkpoint blockade (ICB) therapy. Moreover, by dispersing MnVOx with lipiodol for interventional transarterial embolization (TAE) therapy, an enhanced therapeutic efficacy was achieved in orthotopic rabbit liver cancer compared to that of lipiodol alone. Our work highlights the biological effect of metal anions in inducing pyroptosis, as well as the synergistic immunotherapy involving pyroptosis induction and STING activation.
越来越多的证据表明,生物活性金属离子在增强热蛋白沉积介导的癌症免疫疗法方面发挥着积极作用。然而,进一步扩大持续免疫反应仍具有挑战性。在本文中,我们从典型的金属阴离子中筛选出了钒酸阴离子,证实了钒酸阴离子由于抑制 ATP 酶和破坏细胞内离子平衡而具有显著的细胞毒性和诱导发热作用。然后,合成了 PEG 化双金属钒酸锰纳米粒子(MnVO),用于干扰素基因刺激器(STING)通路的热毒症治疗。MnVO 降解产生的钒酸盐抑制膜 ATP 酶,诱导钾离子外流和钙离子超载,导致炎症小体激活、线粒体损伤和内质网应激,以及随后细胞的强热休克死亡。释放的锰离子通过树突状细胞成熟和 I 型干扰素分泌刺激 STING 通路。这种双重策略引发了强大的抗肿瘤免疫力,并促进了免疫细胞向肿瘤的浸润,与免疫检查点阻断疗法(ICB)相结合,进一步战胜了远处的肿瘤。此外,通过将 MnVO 与脂碘醇一起分散用于介入性经动脉栓塞(TAE)治疗,与单独使用脂碘醇相比,在正位兔肝癌中取得了更好的疗效。我们的研究工作凸显了金属阴离子在诱导化脓过程中的生物效应,以及化脓诱导和 STING 激活的协同免疫疗法。
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引用次数: 0
Inverse design of phononic meta-structured materials 声波元结构材料的逆向设计
IF 21.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.1016/j.mattod.2024.09.012
Hao-Wen Dong , Chen Shen , Ze Liu , Sheng-Dong Zhao , Zhiwen Ren , Chen-Xu Liu , Xudong He , Steven A. Cummer , Yue-Sheng Wang , Daining Fang , Li Cheng
Flexible manipulation of elastic and acoustic waves through phononic meta-structured materials (PMSMs) has attracted a lot of attention in the last three decades and shows a bright future for potential applications in many fields. Conventional engineering design methods for PMSMs rely on changing the material composition and empirical structural configurations, which often result in limited performance due to the limited design space. Recent advances in the fields of additive manufacturing, optimization, and artificial intelligence have given rise to a plethora of creative meta-structured materials that offer superior functionality on demand. In this Review, we provide an overview of inverse design of phononic crystals, phononic-crystal devices, phononic metamaterials, phononic-metamaterial devices, phononic metasurfaces, and phononic topological insulators. We first introduce fundamental wave quantities including dispersion relations, scattering characterizations, and dynamic effective parameters, and then discuss how these wave quantities can be leveraged for systematic inverse design of PMSMs to achieve a variety of customized phononic functionalities with highly customizable full-wave responses, intrinsic physical parameters, and hybrid local–global responses. Furthermore, we show representative applications of some inverse-designed PMSMs and look at future directions. We outline the concept of phononic structures genome engineering (PSGE) through key developments in PMSM inverse design. Finally, we discuss the new possibilities that PSGE brings to wave engineering.
通过声子元结构材料(PMSMs)灵活操纵弹性波和声波在过去三十年里引起了广泛关注,在许多领域的潜在应用前景广阔。PMSMs 的传统工程设计方法依赖于改变材料成分和经验结构配置,由于设计空间有限,往往导致性能受限。增材制造、优化和人工智能领域的最新进展催生了大量创造性的元结构材料,可按需提供卓越的功能。在本综述中,我们将概述声波晶体、声波晶体器件、声波超材料、声波超材料器件、声波超表面和声波拓扑绝缘体的逆向设计。我们首先介绍了包括频散关系、散射特性和动态有效参数在内的基本波量,然后讨论了如何利用这些波量对 PMSMs 进行系统反设计,以实现各种定制的声波功能,包括高度定制的全波响应、固有物理参数和局部-全局混合响应。此外,我们还展示了一些反向设计 PMSM 的代表性应用,并展望了未来的发展方向。我们通过 PMSM 逆设计的关键发展,概述了声波结构基因组工程 (PSGE) 的概念。最后,我们讨论了 PSGE 为波浪工程带来的新可能性。
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引用次数: 0
Recent advances and future perspectives of bismuthene: From preparation to applications 双钌的最新进展和未来展望:从制备到应用
IF 21.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.1016/j.mattod.2024.08.024
Zhou Lu , Dandan Yu , Yinhua Hong , Guiyou Ma , Fei Ru , Tianqi Ge , Guangcheng Xi , Laishun Qin , Mukhammadjon Adilov , Rustam Ashurov , Khatam Ashurov , Da Chen
Bismuthene, an emerging two-dimensional monoelemental material as a good candidate of the room-temperature topological insulator, has attracted considerable attention due to its layer-dependent narrow band gap, high carrier mobility, high stability, tunable electronic and optical properties, and easy transferability. Here, we give a comprehensive overview of bismuthene from synthesis to applications. First, the structures and properties of bismuthene are summarized based on the theoretical simulation and experimental results. Then, the synthesis methods of bismuthene, mainly including liquid phase exfoliation, wet-chemical method and epitaxial growth are shown along with the pros and cons of each. The wide applications of bismuthene in electro/photo-catalysis, sensors, biomedicine, batteries, supercapacitors, optoelectronics, and nonlinear optical devices are further discussed. Finally, we conclude the current status, remaining challenges, and possible research directions to advance this exciting field.
双钌是一种新兴的二维单元素材料,是室温拓扑绝缘体的理想候选材料,它因其与层相关的窄带隙、高载流子迁移率、高稳定性、可调谐的电子和光学特性以及易转移性而备受关注。在此,我们将全面介绍双钌从合成到应用的整个过程。首先,根据理论模拟和实验结果总结了双钌的结构和性质。然后,介绍了双钌的合成方法,主要包括液相剥离法、湿化学法和外延生长法,并说明了每种方法的优缺点。进一步讨论了双钌在电/光催化、传感器、生物医学、电池、超级电容器、光电子学和非线性光学器件中的广泛应用。最后,我们总结了这一令人兴奋的领域的现状、仍然面临的挑战以及可能的研究方向。
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引用次数: 0
Deciphering carbon dots in a new perspective from structural engineering to mechanisms in batteries 从结构工程到电池机制的新视角解密碳点
IF 21.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.1016/j.mattod.2024.09.014
Wenyi Lu , Jian Tan , Yongshuai Liu , Longli Ma , Pengshu Yi , Shaochong Cao , Qianming He , Zhan Fang , Zhu Liu , Mingxin Ye , Jianfeng Shen
Carbon dots (CDs), as emerging members of the carbon nanomaterial family with ultra-small sizes and unique physicochemical properties, which has attracted a great deal of attention in energy conversion and storage, especially in rechargeable batteries in recent years. Although CDs have shown remarkable potential in different batteries, the mechanism of its role for solving common problems in batteries is lacking. In this review, we first clarify the constitutive relationship between the preparation, modification and electrochemical properties of CDs and provide strategies for structural design. Notably, we categorize the role of CDs in batteries from a new perspective, detailing the mechanism that CDs function in different electrochemical properties. Finally, we provide several issues facing CDs in battery applications and directions for further research. This review is expected to serve as an insightful guidance for scientists who work with the fascinating material of CDs and to stimulate further exploration in energy storage.
碳点(CD)作为碳纳米材料家族中的新兴成员,具有超小尺寸和独特的物理化学特性,近年来在能量转换和储存领域,尤其是充电电池领域引起了广泛关注。虽然 CD 在不同的电池中都显示出了巨大的潜力,但其在解决电池中常见问题方面的作用机理还缺乏研究。在这篇综述中,我们首先阐明了 CD 的制备、改性和电化学性能之间的构成关系,并提供了结构设计策略。值得注意的是,我们从一个新的角度对光盘在电池中的作用进行了分类,详细介绍了光盘在不同电化学特性中的作用机制。最后,我们提出了 CD 在电池应用中面临的几个问题以及进一步研究的方向。希望这篇综述能为研究 CD 这种神奇材料的科学家提供有见地的指导,并激励他们在储能领域进行进一步的探索。
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引用次数: 0
Oxidativestress-scavenging thermo-activated MXene hydrogel for rapid repair of MRSA impaired wounds and burn wounds 用于快速修复 MRSA 受损伤口和烧伤创面的氧化应激清除热激活 MXene 水凝胶
IF 21.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.1016/j.mattod.2024.08.010
Junping Ma , Sihua Li , Long Zhang , Bo Lei
Rapid repair of complex skin injuries caused by multidrug-resistant bacterial infections or burn is still a challenge, due to the sustained bacterial colonization, high oxidative stress and severe inflammation. The development of efficient biomaterials strategy with precise bioactive functions is urgent in overcoming clinical challenge. In this study, we introduce a bioactive, multifunctional MXene (transition metal carbides and/or nitrides)-based hydrogel. This hydrogel, formed through the self-assembly of Ti3C2TX MXene and poly(salicylic acid)-Pluronic F127-poly(salicylic acid) (FPSa@M), exhibited the precise capabilities for regulating thermo-antioxidation and anti-inflammatory environments. FPSa@M exhibited the injectability, rapid gelation, electrical conductivity, and beneficial antioxidant and photothermal effects. The photothermal temperature-adjustable FPSa@M hydrogel effectively achieved complete photothermal eradication of high concentrations of multidrug-resistant bacteria. Additionally, FPSa@M hydrogel significantly impacted the multiple cellular behaviors, stimulating proliferation, scavenging reactive oxygen species (ROS), reducing inflammatory factor expression, promoting human umbilical vein endothelial cells (HUVECs) migration and tubule-forming activity of HUVECs. In the methicillin-resistant Staphylococcus aureus (MRSA)-infected or burn wound model, FPSa@M could efficiently eradicate bacterial infection, remodel the microenvironment of oxidative stress and inflammation in wound healing through activating the heat shock protein 90 and angiogenesis, thus significantly promote the wound repair. This work suggests that thermo-antioxidation activated biomaterials probably hold significant promise for addressing extensive complex tissue defects resulting from multidrug-resistant bacterial infections or burns.
由于细菌持续定植、高氧化应激和严重炎症,快速修复由多重耐药细菌感染或烧伤引起的复杂皮肤损伤仍是一项挑战。开发具有精确生物活性功能的高效生物材料是克服临床挑战的当务之急。在本研究中,我们介绍了一种基于 MXene(过渡金属碳化物和/或氮化物)的生物活性多功能水凝胶。这种水凝胶由 Ti3C2TX MXene 和聚(水杨酸)-Pluronic F127-聚(水杨酸)(FPSa@M)自组装而成,具有精确调节热抗氧化和抗炎环境的能力。FPSa@M 具有可注射性、快速凝胶化、导电性以及有益的抗氧化和光热作用。光热温度可调的 FPSa@M 水凝胶有效地实现了对高浓度多重耐药细菌的完全光热根除。此外,FPSa@M 水凝胶还能显著影响多种细胞行为,如刺激细胞增殖、清除活性氧、减少炎症因子表达、促进人脐静脉内皮细胞(HUVECs)迁移和 HUVECs 小管形成活性。在耐甲氧西林金黄色葡萄球菌(MRSA)感染或烧伤创面模型中,FPSa@M 能有效消除细菌感染,通过激活热休克蛋白 90 和血管生成,重塑创面愈合过程中的氧化应激和炎症微环境,从而显著促进创面修复。这项工作表明,热抗氧化活化生物材料在解决因多重耐药细菌感染或烧伤造成的大面积复杂组织缺损方面可能大有可为。
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引用次数: 0
Deformable monoclinic gallium telluride with high in-plane structural anisotropy 具有高度面内结构各向异性的可变形单斜碲化镓
IF 21.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.1016/j.mattod.2024.08.029
Jieling Tan , Hanyi Zhang , Xiaozhe Wang , Yuecun Wang , Jiang-Jing Wang , Hangming Zhang , En Ma , Wei Zhang
Mechanical deformability becomes a new facet of van der Waals (vdW) semiconductors, which opens up a new avenue to develop flexible and wearable electronics. The screening for deformable semiconductors is so far limited to high-symmetric crystalline structures. Here, we extend the realm towards low-symmetric semiconductors with in-plane anisotropy. We focus on gallium telluride, which is comprised of highly distorted quadruple-layer slabs and zigzag-shaped vdW gaps. By carrying out continuous rolling experiments, we prove that gallium telluride exhibits excellent deformability with high fracture resistance. The plastic deformation in this monoclinic crystal is mediated by both inter-layer slips and cross-layer slips, where the non-negligible interactions between Te atoms across vdW gaps play a major role. The structural integrity of the distorted quadruple-layer slabs is sustained by short and strong covalent bonds, and the key ingredient to keep the high in-plane anisotropy is the robust horizontal homopolar Ga–Ga bonds. In severely deformed samples, amorphization and the formation of micro-cracks help release the internal stresses. The formation of amorphous GaTe could help prevent catastrophic failures of crack coalescence and development. Our work paves the way for integration of deformable and flexible devices with anisotropic functionalities.
机械可变形性成为范德华(vdW)半导体的一个新方面,为开发柔性可穿戴电子产品开辟了一条新途径。迄今为止,对可变形半导体的筛选仅限于高对称性晶体结构。在这里,我们将领域扩展到具有面内各向异性的低对称半导体。我们的研究重点是碲化镓,它由高度扭曲的四层板坯和人字形 vdW 间隙组成。通过连续滚动实验,我们证明了碲化镓具有极佳的变形性和高抗断裂性。这种单斜晶体的塑性变形由层间滑移和跨层滑移两种方式介导,其中跨 vdW 间隙的碲原子之间不可忽略的相互作用发挥了重要作用。扭曲的四层板的结构完整性是由短而强的共价键维持的,而保持高面内各向异性的关键因素是坚固的水平同极性 Ga-Ga 键。在严重变形的样品中,非晶化和微裂的形成有助于释放内应力。非晶态 GaTe 的形成有助于防止裂纹凝聚和发展造成的灾难性故障。我们的工作为集成具有各向异性功能的可变形柔性器件铺平了道路。
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引用次数: 0
Three-dimensional X-ray imaging and quantitative analysis of solid oxide cells 固体氧化物电池的三维 X 射线成像和定量分析
IF 21.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-11-01 DOI: 10.1016/j.mattod.2024.08.016
Wilson K.S. Chiu , Salvatore De Angelis , Peter Stanley Jørgensen , Luise Theil Kuhn
The article presents an overview on the progress of X-ray imaging of solid oxide cells (SOC) during the past decade. X-ray imaging has enabled significant advances in solid oxide cells. Laboratory-based X-ray sources allowed researchers to investigate the electrode porosity, different material phases, and its crystallography and grain boundaries. Synchrotron-based X-ray sources enable a more detailed understanding of the chemistry under in situ and operando conditions due to the significantly brighter source. Recent breakthroughs using synchrotron X-ray sources have allowed researchers to understand SOC performance and degradation at unprecedented spatial, chemical and temporal resolution using novel absorption contrast and XANES tomography, ptychographic and holographic X-ray tomography and 3-D X-ray diffraction imaging. Three-dimensional images have been used to advance numerical modeling and simulations, e.g., phase field models, lumped element models, and artificial structure generation. Machine learning and deep neural network algorithms are being explored for automated image segmentation. X-ray imaging has also been used to advance the creation of hierarchical electrode structures. Even though the theory and methods for X-ray imaging and analysis now exist, most studies still don’t take full advantage of this. Typical studies only use direct interpretation of images. As structures get more complicated, e.g., hierarchical structures, the quantitative interpretation of images will be needed to correlate structure to performance.
文章概述了过去十年固体氧化物电池(SOC)X 射线成像的进展。X 射线成像使固体氧化物电池取得了重大进展。基于实验室的 X 射线源让研究人员能够研究电极孔隙率、不同材料相、结晶学和晶界。由于同步辐射 X 射线源的亮度更高,因此可以更详细地了解原位和操作条件下的化学反应。利用同步辐射 X 射线源的最新突破,研究人员可以利用新型吸收对比和 XANES 层析成像、层析成像和全息 X 射线层析成像以及三维 X 射线衍射成像,以前所未有的空间、化学和时间分辨率了解 SOC 的性能和降解情况。三维图像已被用于推进数值建模和模拟,例如相场模型、叠加元素模型和人工结构生成。目前正在探索用于自动图像分割的机器学习和深度神经网络算法。X 射线成像还被用于推动分层电极结构的创建。尽管现在已经有了 X 射线成像和分析的理论和方法,但大多数研究仍未充分利用这一优势。典型的研究仅采用直接解读图像的方法。随着结构变得越来越复杂,例如分层结构,就需要对图像进行定量解读,以便将结构与性能联系起来。
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引用次数: 0
Methodologies for constructing multi-color room temperature phosphorescent systems 构建多色室温磷光系统的方法
IF 21.1 1区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Pub Date : 2024-09-01 DOI: 10.1016/j.mattod.2024.07.002
Zhizheng Li , Qian Yue , Huacheng Zhang , Yanli Zhao

Room temperature phosphorescent (RTP) materials have attracted much attention due to their potential applications to anti-counterfeiting encryption, optoelectronic devices and biological imaging. While the development of long lifetime afterglow materials is being promoted, the construction of multi-color afterglow materials by modulating the excited state energy through different means is also important. However, the sensitivity of the excited state and the transition mechanism of T1 result in the limitation of afterglow colors. Therefore, the methods of constructing multi-color RTP materials are summarized into six categories: push–pull electron effect, π-conjugation, molecular aggregation state, multi-component doping, supramolecular self-assembly and multi-mode emission. Based on methodological guidance, the potential applications of multi-color RTP in the fields of optical information storage, bioimaging and intelligent response systems are also discussed. Finally, the construction of multi-color RTP materials is prospected to provide valuable references for the further development of multi-color afterglow regulation methodologies.

室温磷光(RTP)材料因其在防伪加密、光电器件和生物成像方面的潜在应用而备受关注。在推动长寿命余辉材料发展的同时,通过不同手段调控激发态能量来构建多色余辉材料也很重要。然而,激发态的敏感性和 T1 的转变机制导致了余辉颜色的局限性。因此,构建多色 RTP 材料的方法归纳为六类:推拉电子效应、π-共轭、分子聚集态、多组分掺杂、超分子自组装和多模发射。在方法论指导下,还讨论了多色 RTP 在光学信息存储、生物成像和智能响应系统领域的潜在应用。最后,展望了多色 RTP 材料的构建,为进一步发展多色余辉调控方法提供有价值的参考。
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Materials Today
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