Communications Materials最新文献_第10页

Moiré superlattices of antimonene on a Bi(111) substrate with van Hove singularity and Rashba-type spin polarization 具有范霍夫奇异性和拉什巴型自旋极化的 Bi(111) 衬底上的锑莫埃超晶格

IF 7.5

Communications Materials Pub Date : 2024-08-26 DOI: 10.1038/s43246-024-00615-z

Tomonori Nakamura, Yitao Chen, Ryohei Nemoto, Wenxuan Qian, Yuto Fukushima, Kaishu Kawaguchi, Ryo Mori, Takeshi Kondo, Youhei Yamaji, Shunsuke Tsuda, Koichiro Yaji, Takashi Uchihashi

{"title":"Moiré superlattices of antimonene on a Bi(111) substrate with van Hove singularity and Rashba-type spin polarization","authors":"Tomonori Nakamura, Yitao Chen, Ryohei Nemoto, Wenxuan Qian, Yuto Fukushima, Kaishu Kawaguchi, Ryo Mori, Takeshi Kondo, Youhei Yamaji, Shunsuke Tsuda, Koichiro Yaji, Takashi Uchihashi","doi":"10.1038/s43246-024-00615-z","DOIUrl":"10.1038/s43246-024-00615-z","url":null,"abstract":"Moiré superlattices consisting of two-dimensional materials have attracted immense attention because of emergent phenomena such as flat band-induced Mott insulating states and unconventional superconductivity. However, the effects of spin-orbit coupling on these materials have not yet been fully explored. Here, we show that single- and double-bilayer antimony honeycomb lattices, referred to as antimonene, form moiré superlattices on a Bi(111) substrate due to lattice mismatch. Scanning tunnelling microscopy (STM) measurements reveal the presence of spectral peaks near the Fermi level, which are spatially modulated with the moiré period. Angle-resolved photoemission spectroscopy (ARPES) combined with density functional theory calculations clarify the surface band structure with saddle points near the Fermi level, which allows us to attribute the observed STM spectral peaks to the van Hove singularity. Moreover, spin-resolved ARPES measurements reveal that the observed surface states are Rashba-type spin-polarized. The present work has significant implications in that Fermi surface instability and symmetry breaking may emerge at low temperatures, where the spin degree of freedom and electron correlation also play important roles. Moiré superlattices are of great fundamental interest as they can host emergent phenomena such as flat band-induced Mott insulating states and unconventional superconductivity. Here, 2D antimony honeycomb lattices on a Bi(111) substrate are shown to form moiré superlattices with Rashba-type spin-polarized states, as revealed by STM and spin-resolved ARPES measurements.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-9"},"PeriodicalIF":7.5,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00615-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142091213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Self-deposited passivation for decreasing scalable processing loss of perovskite solar cells 自沉积钝化技术用于降低过氧化物太阳能电池的可扩展加工损耗

IF 7.5

Communications Materials Pub Date : 2024-08-22 DOI: 10.1038/s43246-024-00585-2

Yuli Tao, Zheng Liang, Jiajiu Ye, Shendong Xu, Hui Zhang, Huifen Xu, Chentai Cao, Quan Yang, Zameer Abbas, Guozhen Liu, Xu Pan

{"title":"Self-deposited passivation for decreasing scalable processing loss of perovskite solar cells","authors":"Yuli Tao, Zheng Liang, Jiajiu Ye, Shendong Xu, Hui Zhang, Huifen Xu, Chentai Cao, Quan Yang, Zameer Abbas, Guozhen Liu, Xu Pan","doi":"10.1038/s43246-024-00585-2","DOIUrl":"10.1038/s43246-024-00585-2","url":null,"abstract":"With the area of perovskite films and devices increases, the performance tends to deteriorate, which can be attributed to the accumulation of defects at the bottom surface without proper passivation. Here, we introduce the 1-(4-Fluorophenyl)−2-pyrrolidone molecule (FPP) as additive in large-area blade-coating perovskite films. During the top-down crystallization process, the FPP molecule form an intermediate phase with the perovskite components and subsequently self-deposit at the bottom surface. Consequently, the crystallization kinetics of the large-area thin films are regulated, and the bottom surface is effectively and uniformly passivated in one single-step processing. By employing this self-deposited passivation method (SDP), the efficiency decrease caused by the expansion of the device area has been significantly suppressed and the devices yield power conversion efficiency of 23.41% (0.09 cm2), 22.43% (1 cm2), and 20.75% (24 cm2). The method is compatible for commercial manufacturing with scaling up solar cell area and holding high efficiency. Blade-coating produces large-area perovskite solar cells, but device performance is often reduced as the area of the film increases. Here, an additive is used to control film crystallization to achieve high power conversion efficiency, attributed to a self-deposited passivation method","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-9"},"PeriodicalIF":7.5,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00585-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142050572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Author Correction: Fabrication of covalently bonded MoS2–graphene heterostructures with different organic linkers 作者更正：用不同的有机连接体制造共价键合的 MoS2 石墨烯异质结构

IF 7.5

Communications Materials Pub Date : 2024-08-22 DOI: 10.1038/s43246-024-00610-4

Lei Chen, Hui-Lei Hou, Maurizio Prato

引用次数: 0

Amorphous shear band formation in crystalline Si-anodes governs lithiation and capacity fading in Li-ion batteries 晶体硅阳极中无定形剪切带的形成制约着锂离子电池的锂化和容量衰减

IF 7.5

Communications Materials Pub Date : 2024-08-21 DOI: 10.1038/s43246-024-00599-w

Michael Häusler, Olga Stamati, Christoph Gammer, Franco Moitzi, Rahulkumar Jagdishbhai Sinojiya, Julie Villanova, Bernhard Sartory, Daniel Scheiber, Jozef Keckes, Bernd Fuchsbichler, Stefan Koller, Roland Brunner

{"title":"Amorphous shear band formation in crystalline Si-anodes governs lithiation and capacity fading in Li-ion batteries","authors":"Michael Häusler, Olga Stamati, Christoph Gammer, Franco Moitzi, Rahulkumar Jagdishbhai Sinojiya, Julie Villanova, Bernhard Sartory, Daniel Scheiber, Jozef Keckes, Bernd Fuchsbichler, Stefan Koller, Roland Brunner","doi":"10.1038/s43246-024-00599-w","DOIUrl":"10.1038/s43246-024-00599-w","url":null,"abstract":"The cycling stability of Li-ion batteries is commonly attributed to the formation of the solid electrolyte interphase (SEI) layer, which is generated on the active material surface during electrochemical reactions in battery operation. Silicon experiences large volume changes upon the Li-insertion and extraction, leading to the amorphization of the silicon-interface due to the permeation of the Li-ions into the silicon. Here, we discover how generated non-hydrostatic strain upon electrochemical cycling further triggers dislocation and eventually shear band formation within the crystalline silicon core. The latter boosts the non-uniform lithiation at the silicon interface affecting the SEI reformation process and ultimately the capacity. Our findings are based on a comprehensive multiscale structural and chemical experimental characterization, complemented by molecular dynamics modelling. This approach highlights the importance of considering electrochemical, microstructural and mechanical mechanisms, offering a strategy for developing improved anode materials with enhanced cycling stability and reduced capacity loss. Silicon undergoes large volume changes during lithium insertion and extraction, affecting the internal lithium-ion battery structure. Here, the mechanisms of how non-hydrostatic strain upon electrochemical cycling affects the crystalline silicon core was investigated.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-13"},"PeriodicalIF":7.5,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00599-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sharp-peaked lanthanide nanocrystals for near-infrared photoacoustic multiplexed differential imaging 用于近红外光声多路复用差分成像的尖峰镧系纳米晶体

IF 7.5

Communications Materials Pub Date : 2024-08-21 DOI: 10.1038/s43246-024-00605-1

Kang Yong Loh, Lei S. Li, Jingyue Fan, Yi Yiing Goh, Weng Heng Liew, Samuel Davis, Yide Zhang, Kai Li, Jie Liu, Liangliang Liang, Minjun Feng, Ming Yang, Hang Zhang, Ping’an Ma, Guangxue Feng, Zhao Mu, Weibo Gao, Tze Chien Sum, Bin Liu, Jun Lin, Kui Yao, Lihong V. Wang, Xiaogang Liu

{"title":"Sharp-peaked lanthanide nanocrystals for near-infrared photoacoustic multiplexed differential imaging","authors":"Kang Yong Loh, Lei S. Li, Jingyue Fan, Yi Yiing Goh, Weng Heng Liew, Samuel Davis, Yide Zhang, Kai Li, Jie Liu, Liangliang Liang, Minjun Feng, Ming Yang, Hang Zhang, Ping’an Ma, Guangxue Feng, Zhao Mu, Weibo Gao, Tze Chien Sum, Bin Liu, Jun Lin, Kui Yao, Lihong V. Wang, Xiaogang Liu","doi":"10.1038/s43246-024-00605-1","DOIUrl":"10.1038/s43246-024-00605-1","url":null,"abstract":"Photoacoustic tomography offers a powerful tool to visualize biologically relevant molecules and understand processes within living systems at high resolution in deep tissue, facilitated by the conversion of incident photons into low-scattering acoustic waves through non-radiative relaxation. Although current endogenous and exogenous photoacoustic contrast agents effectively enable molecular imaging within deep tissues, their broad absorption spectra in the visible to near-infrared (NIR) range limit photoacoustic multiplexed imaging. Here, we exploit the distinct ultrasharp NIR absorption peaks of lanthanides to engineer a series of NIR photoacoustic nanocrystals. This engineering involves precise host and dopant material composition, yielding nanocrystals with sharply peaked photoacoustic absorption spectra (~3.2 nm width) and a ~10-fold enhancement in NIR optical absorption for efficient deep tissue imaging. By combining photoacoustic tomography with these engineered nanocrystals, we demonstrate photoacoustic multiplexed differential imaging with substantially decreased background signals and enhanced precision and contrast. Current photoacoustic contrast agents cannot be used for multiplexed imaging due to their broad absorption spectra in the visible to near-infrared range. Here, the sharp near-infrared absorption peaks of lanthanides are exploited for photoacoustic and efficient deep tissue imaging.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-10"},"PeriodicalIF":7.5,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00605-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Entropy-stabilized materials as a platform to explore terbium-based pyrochlore frustrated magnets 以熵稳定材料为平台，探索基于铽的火绿宝石挫折磁体

IF 7.5

Communications Materials Pub Date : 2024-08-21 DOI: 10.1038/s43246-024-00589-y

Florianne Vayer, Sylvain Petit, Françoise Damay, Jan Embs, Stéphane Rols, Claire Colin, Elsa Lhotel, Dalila Bounoua, Nita Dragoe, David Bérardan, Claudia Decorse

{"title":"Entropy-stabilized materials as a platform to explore terbium-based pyrochlore frustrated magnets","authors":"Florianne Vayer, Sylvain Petit, Françoise Damay, Jan Embs, Stéphane Rols, Claire Colin, Elsa Lhotel, Dalila Bounoua, Nita Dragoe, David Bérardan, Claudia Decorse","doi":"10.1038/s43246-024-00589-y","DOIUrl":"10.1038/s43246-024-00589-y","url":null,"abstract":"Two decades of work have shown that the physics of Tb-based pyrochlores is controlled by a subtle equilibrium between quadrupole-quadrupole and dipolar-dipolar magnetic interactions, as exemplified by the ordered spin ice Tb2Sn2O7 and the quantum spin liquid candidate Tb2Ti2O7. The high-entropy approach is thus quite promising, as it offers the possibility of a delicate tuning of chemical disorder. In this work, we investigate the entropy-stabilized pyrochlore compound Tb2(TiZrHfGeSn)2O7. We report the lack of long range magnetic order, yet the observed magnetic diffuse scattering is characteristic of antiferromagnetic first-neighbor correlations. The crystal field excitation spectrum, with broaden levels, visibly reflects the smooth environmental disorder of the Tb environment. The low energy dynamics are characterized by a narrow mode at about 0.4 meV, consistent with specific heat. Remarkably, as illustrated by a model of random isotropic shifts of oxygen atoms around Tb ions, the spectral weight of this mode is a direct consequence of deviations from the D3d symmetry at Tb sites. In the light of these results, quadrupolar interactions are also discussed. Frustrated magnetic systems such as pyrochlores are interesting for the complexity of their competing low-temperature phases. Here, the intrinsic disorder of the entropy-stabilized compound Tb2(TiZrHfGeSn)2O7 is utilized to investigate the elusive ground state of Tb-based pyrochlore magnets.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-10"},"PeriodicalIF":7.5,"publicationDate":"2024-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00589-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Static magnetic order with strong quantum fluctuations in spin-1/2 honeycomb magnet Na2Co2TeO6 自旋-1/2 蜂窝磁体 Na2Co2TeO6 中具有强量子波动的静态磁序

IF 7.5

Communications Materials Pub Date : 2024-08-20 DOI: 10.1038/s43246-024-00594-1

Jinlong Jiao, Xiyang Li, Gaoting Lin, Mingfang Shu, Wei Xu, Oksana Zaharko, Toni Shiroka, Tao Hong, Alexander I. Kolesnikov, Guochu Deng, Sarah Dunsiger, Meigan C. Aronson, Haidong Zhou, Xiaoqun Wang, Tian Shang, Jie Ma

{"title":"Static magnetic order with strong quantum fluctuations in spin-1/2 honeycomb magnet Na2Co2TeO6","authors":"Jinlong Jiao, Xiyang Li, Gaoting Lin, Mingfang Shu, Wei Xu, Oksana Zaharko, Toni Shiroka, Tao Hong, Alexander I. Kolesnikov, Guochu Deng, Sarah Dunsiger, Meigan C. Aronson, Haidong Zhou, Xiaoqun Wang, Tian Shang, Jie Ma","doi":"10.1038/s43246-024-00594-1","DOIUrl":"10.1038/s43246-024-00594-1","url":null,"abstract":"Kitaev interactions, arising from the interplay of frustration and bond anisotropy, can lead to strong quantum fluctuations and, in an ideal case, to a quantum-spin-liquid state. However, in many nonideal materials, spurious non-Kitaev interactions typically promote a zigzag antiferromagnetic order in the d-orbital transition-metal compounds. Here, by combining neutron scattering with muon-spin rotation and relaxation techniques, we provide mechanism insights into the exotic properties of Na2Co2TeO6, a candidate material of the Kitaev model. Below TN, the zero-field muon-spin relaxation rate becomes almost constant (~0.45 μs−1). We attribute this temperature-independent relaxation rate to the strong quantum fluctuations, as well as to the frustrated Kitaev interactions. As the magnetic field increases, neutron scattering data indicate a broader spin-wave excitation at the K-point. Therefore, quantum fluctuations seem not only robust but are even enhanced by the applied magnetic field. Our findings provide valuable hints for understanding the onset of the quantum-spin-liquid state in Kitaev materials. Na2Co2TeO6 is a candidate Kitaev spin-liquid, but the nature of its ground state remains controversial, as spurious non-Kitaev exchange interactions promote magnetic ordering. Here, neutron scattering and muon-spin rotation experiments indicate the presence of strong quantum fluctuations in the ground state, giving rise to a multi-domain zigzag antiferromagnetic order.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-7"},"PeriodicalIF":7.5,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00594-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pore-networked membrane using linked metal-organic polyhedra for trace-level pollutant removal and detection in environmental water 利用链接金属有机多面体的孔网络膜去除和检测环境水体中的痕量污染物

IF 7.5

Communications Materials Pub Date : 2024-08-20 DOI: 10.1038/s43246-024-00607-z

Zaoming Wang, Idaira Pacheco-Fernández, James E. Carpenter, Takuma Aoyama, Guoji Huang, Ali Pournaghshband Isfahani, Behnam Ghalei, Easan Sivaniah, Kenji Urayama, Yamil J. Colón, Shuhei Furukawa

{"title":"Pore-networked membrane using linked metal-organic polyhedra for trace-level pollutant removal and detection in environmental water","authors":"Zaoming Wang, Idaira Pacheco-Fernández, James E. Carpenter, Takuma Aoyama, Guoji Huang, Ali Pournaghshband Isfahani, Behnam Ghalei, Easan Sivaniah, Kenji Urayama, Yamil J. Colón, Shuhei Furukawa","doi":"10.1038/s43246-024-00607-z","DOIUrl":"10.1038/s43246-024-00607-z","url":null,"abstract":"The wide presence of pharmaceuticals and personal care products (PPCPs) in water is a major pollution concern even at the part per billion level, which urges their detection and removal. Current research emphasizes the use of microporous materials as adsorbents for pollutant removal but demonstrates the performance at a higher concentration than realistic environmental water due to the absence of efficient detection methods that can be coupled with the removal process. Here we report a pore-networked membrane (PNM) that can simultaneously remove and detect targeted trace-level PPCPs. These PNMs are designed by interconnecting adsorbents within polymer matrices, forming continuous, tunable porous networks that are accessible for PPCPs, thereby offering high selectivity and adsorption capacity. Evaluations across water samples containing 13 pollutants demonstrate the capability of PNMs to selectively adsorb PPCPs for removal and subsequently release them into analysis solution for detection, positioning their promising use in real water treatment workflow. It is challenging for microporous materials to remove pollutants at concentrations relevant to environmental water. Here, a pore-networked membrane system designed from linked metal-organic polyhedra can simultaneously remove and detect targeted pharmaceuticals and personal care products at trace level","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-13"},"PeriodicalIF":7.5,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00607-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nanoconfinement of an ammine magnesium borohydride composite electrolyte in a mesoporous silica scaffold 介孔二氧化硅支架中的氨镁硼氢化复合电解质的纳米融合

IF 7.5

Communications Materials Pub Date : 2024-08-20 DOI: 10.1038/s43246-024-00601-5

Palmarin Dansirima, Lasse G. Kristensen, Jakob B. Grinderslev, Jørgen Skibsted, Rapee Utke, Torben R. Jensen

{"title":"Nanoconfinement of an ammine magnesium borohydride composite electrolyte in a mesoporous silica scaffold","authors":"Palmarin Dansirima, Lasse G. Kristensen, Jakob B. Grinderslev, Jørgen Skibsted, Rapee Utke, Torben R. Jensen","doi":"10.1038/s43246-024-00601-5","DOIUrl":"10.1038/s43246-024-00601-5","url":null,"abstract":"Improvements of magnesium ionic conducting materials are important for the development of novel magnesium solid-state batteries. Here we investigate the effect of nanoconfinement of one of the most conductive magnesium electrolytes − the (Mg(BH4)2·NH3)x(Mg(BH4)2·2NH3)1−x composite. The synthesis of nanoconfined Mg(BH4)2·1.47NH3 in a mesoporous silica scaffold (SBA-15, pore size 5.8 nm) is achieved through melt infiltration. Various degrees of pore filling are investigated, ranging from 100 to 300 %. Solid-state 11B nuclear magnetic resonance analysis confirms the successful stabilization of the highly dynamic eutectic molten state of Mg(BH4)2·1.47NH3 through nanoconfinement. The confined sample exhibits notable thermal stability, maintaining integrity up to approximately 100 °C, and the eutectic molten composite does not recrystallize within five months after synthesis, upon storing at room temperature. Notably, among the confined samples, 200 % pore filling displays promising Mg2+ ionic conductivity within the range of 9.1 × 10−6 to 2.7 × 10−4 S cm−1 and a low activation energy of 0.69 eV at temperatures from 32 to 80 °C. Furthermore, the compound was found to have a low electronic conductivity of 7.93 × 10−11 S cm−1 at 70 °C resulting in an ionic transport number close to unity. Improving magnesium-based ionic conducting materials is important for developing magnesium solid-state batteries. Here, magnesium electrolytes are nanoconfined in a mesoporous silica scaffold which improves the ionic transport properties and stability.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-7"},"PeriodicalIF":7.5,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00601-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In-situ X-ray imaging of the breakup dynamics of current-carrying molten metal jets during arc discharge 电弧放电期间载流熔融金属射流破裂动态的原位 X 射线成像

IF 7.5

Communications Materials Pub Date : 2024-08-20 DOI: 10.1038/s43246-024-00586-1

Yuriko Sato, Takahisa Shobu, Aki Tominaga, Tomokazu Sano, Yosuke Ogino

{"title":"In-situ X-ray imaging of the breakup dynamics of current-carrying molten metal jets during arc discharge","authors":"Yuriko Sato, Takahisa Shobu, Aki Tominaga, Tomokazu Sano, Yosuke Ogino","doi":"10.1038/s43246-024-00586-1","DOIUrl":"10.1038/s43246-024-00586-1","url":null,"abstract":"The flow dynamics of current-carrying molten metal jet breakup during arc discharge serves as mass and heat sources in wire-arc-based metal deposition processes, thereby optimizing the resultant product quality. However, the spatiotemporal flow interaction between the molten metal jet and the surrounding arc plasma remains unclear. Here, using in-situ synchrotron X-ray imaging, we simultaneously track surface deformation and internal flow in molten aluminum jets during argon arc discharge. We reveal that modulating the magnitude and path of the arc discharge current can accelerate the jet velocity by 200–300% beyond its initial injection speed, thereby facilitating significant jet elongation. Our results provide consistent evidence that the jet flow dynamics are predominantly governed by the interaction between the arc discharge current and its coaxial self-induced magnetic field. This study establishes a framework at the intersection of fluid dynamics and electromagnetism, contributing to optimized control and precision in wire-arc-based applications. Understanding the dynamics of the breakup of current-carrying molten metal jets during arc discharge is vital in metal deposition processes. Here, X-ray imaging of a molten aluminum jet reveals how process parameters can be used to control jet dynamics, such as velocity.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-9"},"PeriodicalIF":7.5,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00586-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0