Communications Materials最新文献_第4页

Rapid and precise large area mapping of rare-earth doping homogeneity in luminescent materials 发光材料中稀土掺杂均匀性的快速精确大面积绘图

IF 7.5

Communications Materials Pub Date : 2024-11-14 DOI: 10.1038/s43246-024-00679-x

Jan Hrabovsky, Miroslav Kucera, Lucie Palousova, Jakub Zazvorka, Jan Kubat, Lei Bi, Martin Veis

{"title":"Rapid and precise large area mapping of rare-earth doping homogeneity in luminescent materials","authors":"Jan Hrabovsky, Miroslav Kucera, Lucie Palousova, Jakub Zazvorka, Jan Kubat, Lei Bi, Martin Veis","doi":"10.1038/s43246-024-00679-x","DOIUrl":"10.1038/s43246-024-00679-x","url":null,"abstract":"Doping of luminescent materials by rare-earth ions is common practice to achieve desired emission properties for a large variety of applications. As several rare-earths ions are frequently combined, it is subsequently difficult to effectively detect and control their homogeneous distribution within the host material. Here, we present a simple, rapid, large scale and precise method of rare-earth mapping using a commercial UV-Vis scanner. We discuss the influence of rare-earth distribution on the physical, optical and luminescent properties with no observable qualitative effect on photoluminescent properties and optical anisotropy. On the contrary, rare-earth-rich areas exhibit significantly higher values of refractive index and optical absorption, which allowed for their identification by the commercial scanner device. The presented method thus provides fast and accurate information about the rare-earth distribution in the material volume with high resolution (≈2.7 µm) and low limit of concentration difference detection (≈0.014 at.%) compared to other techniques, which makes it a promising candidate for high throughput measurements. Mapping the distributions of various rare-earth dopants when combined within a host material is challenging, Here, a fast and precise approach to mapping rare-earth doping distribution based on a commercial UV-Vis scanner shows that dopants locally modify the optical properties of the material.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-9"},"PeriodicalIF":7.5,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00679-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142645811","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

Machine vision system by optically tunable 2D magnetic junctions 利用光可调二维磁性结的机器视觉系统

IF 7.5

Communications Materials Pub Date : 2024-11-14 DOI: 10.1038/s43246-024-00696-w

Aldo Isidori

引用次数: 0

Unraveling the origin of conductivity change in Co-doped FeRh phase transition 揭示掺杂 Co 的 FeRh 相变中电导率变化的起源

IF 7.5

Communications Materials Pub Date : 2024-11-11 DOI: 10.1038/s43246-024-00694-y

Ji-Ho Park, Min Tae Park, Geon-Woo Baek, Shin-ichi Kimura, Myung-Hwa Jung, Kab-Jin Kim

{"title":"Unraveling the origin of conductivity change in Co-doped FeRh phase transition","authors":"Ji-Ho Park, Min Tae Park, Geon-Woo Baek, Shin-ichi Kimura, Myung-Hwa Jung, Kab-Jin Kim","doi":"10.1038/s43246-024-00694-y","DOIUrl":"10.1038/s43246-024-00694-y","url":null,"abstract":"Phase-changing materials have been a cornerstone of condensed matter physics for decades. A quintessential example is iron-rhodium (FeRh), which undergoes a first-order phase transition from antiferromagnetic to ferromagnetic states near room temperature. The pivotal aspect of this transition is a marked alteration in electrical conductivity. However, its underlying origin still remains elusive, largely due to the difficulties of directly probing fundamental transport during this phase transition. In this study, we investigate the fundamentals of FeRh’s electrical transport employing terahertz time-domain spectroscopy (THz-TDS). Leveraging the Drude model, we discerned the distinct contributions of extrinsic (momentum scattering time, τ) and intrinsic (charge density, n, and effective mass, m*) factors to electrical conductivity independently. Notably, our investigation unveiled a sharp alteration in n and m* during the phase transition, contrasting with the gradual monotonic decrease of τ with rising temperature. Consequently, our findings provide compelling evidence that the conductivity change in FeRh during the phase transition originates from a restructuring of its band structure. This work provides a crucial step towards a comprehensive understanding of the electrical transport changes occurring during the phase transition, offering valuable insights into the behaviour of phase changing materials. Phase-changing materials such as FeRh, undergoing a first-order phase transition from antiferromagnetic to ferromagnetic near room temperature, are attractive for various applications. Here, terahertz time-domain spectroscopy provides evidence that the conductivity change in FeRh during the phase transition originates from a restructuring of its band structure.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-7"},"PeriodicalIF":7.5,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00694-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142600822","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: Electrical response and biodegradation of Sepia melanin-shellac films printed on paper 作者更正：印在纸上的墨鱼黑素-黄柏薄膜的电反应和生物降解

IF 7.5

Communications Materials Pub Date : 2024-11-11 DOI: 10.1038/s43246-024-00687-x

Anthony Camus, Shinhyeong Choe, Camille Bour-Cardinal, Joaquin Isasmendi, Yongjun Cho, Youngju Kim, Cristian Vlad Irimia, Cigdem Yumusak, Mihai Irimia-Vladu, Denis Rho, Jaewook Myung, Clara Santato

引用次数: 0

Multi-sensing yarns for continuous wireless sweat lactate monitoring 用于连续无线汗液乳酸监测的多传感纱线

IF 7.5

Communications Materials Pub Date : 2024-11-08 DOI: 10.1038/s43246-024-00680-4

Bradley Napier, Giusy Matzeu, Fiorenzo G. Omenetto

{"title":"Multi-sensing yarns for continuous wireless sweat lactate monitoring","authors":"Bradley Napier, Giusy Matzeu, Fiorenzo G. Omenetto","doi":"10.1038/s43246-024-00680-4","DOIUrl":"10.1038/s43246-024-00680-4","url":null,"abstract":"Textile integrated sensors based on conductive, electrochemically active microfibers can enable inexpensive, nearly invisible distributed sensing of sweat in clothing. Reduced graphene oxide fibers are mechanically robust, conductive, and can be easily functionalized to form a variety of sensors with properties comparable to planar fabricated sensors, given their ability to work both as electrical interconnections and as a base electrode. Here, we present an electrochemical yarn based on modified dry-spun reduced graphene oxide fibers. This braided format contains reference, counter electrode, a lactate-responsive fiber functionalized with lactate oxidase, and a pH-sensing fiber for calibration in a single, robust, weavable format. This electrochemical yarn was integrated into a demonstrator wearable textile-patch capable of continuous data collection and wireless data transmitted to an ad-hoc app. The yarns perform comparably to traditional probes in a format of broad utility for standalone or integrated monitoring of physiological parameters. Textile-based sweat sensors offer the possibility of low-cost health monitoring. Here, an electrochemical yarn based on reduced-graphene oxide is integrated into a textile patch that continuously collects physiological data and wirelessly sends it to an app.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-8"},"PeriodicalIF":7.5,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00680-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595727","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

Benefits and complexity of defects in metal-organic frameworks 金属有机框架缺陷的益处和复杂性

IF 7.5

Communications Materials Pub Date : 2024-11-08 DOI: 10.1038/s43246-024-00691-1

N. S. Portillo-Vélez, Juan L. Obeso, José Antonio de los Reyes, Ricardo A. Peralta, Ilich A. Ibarra, Michael T. Huxley

引用次数: 0

Thermodynamic evidence for polaron stabilization inside the antiferromagnetic order of Eu5In2Sb6 极子在 Eu5In2Sb6 反铁磁阶内稳定的热力学证据

IF 7.5

Communications Materials Pub Date : 2024-11-08 DOI: 10.1038/s43246-024-00689-9

Hubert Dawczak-Dębicki, M. Victoria Ale Crivillero, Matthew S. Cook, Sean M. Thomas, Priscila F. S. Rosa, Jens Müller, Ulrich K. Rößler, Pedro Schlottmann, Steffen Wirth

{"title":"Thermodynamic evidence for polaron stabilization inside the antiferromagnetic order of Eu5In2Sb6","authors":"Hubert Dawczak-Dębicki, M. Victoria Ale Crivillero, Matthew S. Cook, Sean M. Thomas, Priscila F. S. Rosa, Jens Müller, Ulrich K. Rößler, Pedro Schlottmann, Steffen Wirth","doi":"10.1038/s43246-024-00689-9","DOIUrl":"10.1038/s43246-024-00689-9","url":null,"abstract":"Materials exhibiting electronic inhomogeneities at the nanometer scale have enormous potential for applications. Magnetic polarons are one such type of inhomogeneity which link the electronic, magnetic and lattice degrees of freedom in correlated matter and often give rise to colossal magnetoresistance. Here, we investigate single crystals of Eu5In2Sb6 by thermal expansion and magnetostriction along different crystallographic directions. These data provide compelling evidence for the formation of magnetic polarons in Eu5In2Sb6 well above the magnetic ordering temperature. More specifically, our results are consistent with anisotropic polarons with varying extent along the different crystallographic directions. A crossover revealed within the magnetically ordered phase can be associated with a surprising stabilization of ferromagnetic polarons within the global antiferromagnetic order upon decreasing temperature. These findings make Eu5In2Sb6 a rare example of such coexisting and competing magnetic orders and, importantly, shed new light on colossal magnetoresistive behavior beyond manganites. Materials exhibiting electronic inhomogeneities at the nanometer scale, such as magnetic polarons, have great potential for magnetoresistive applications. Here, thermal expansion and magnetostriction measurements on Eu5In2Sb6 single crystals reveal the formation of magnetic polarons well above the magnetic ordering temperature, providing insights on colossal magnetoresistive behavior beyond manganites.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-8"},"PeriodicalIF":7.5,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00689-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595703","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

Bioengineering approach for the design of magnetic bacterial cellulose membranes 设计磁性细菌纤维素膜的生物工程方法

IF 7.5

Communications Materials Pub Date : 2024-11-07 DOI: 10.1038/s43246-024-00562-9

Sundaravadanam Vishnu Vadanan, Rupali Reddy Pasula, Neel Joshi, Sierin Lim

{"title":"Bioengineering approach for the design of magnetic bacterial cellulose membranes","authors":"Sundaravadanam Vishnu Vadanan, Rupali Reddy Pasula, Neel Joshi, Sierin Lim","doi":"10.1038/s43246-024-00562-9","DOIUrl":"10.1038/s43246-024-00562-9","url":null,"abstract":"Biopolymer research has led to the development of novel products through innovative strategies. Their functionalization is typically achieved by physical/chemical methods that require harsh chemicals or mechanical treatments. These functionalities could be alternatively achieved by employing bioengineering design methods. We demonstrate, a bioengineered dual-microbial approach to create functional bacterial cellulose from microbial workhorses. Komagataeibacter hansenii ATCC 53582 is used to produce bacterial cellulose and engineered E. coli is used to functionalize the matrix with a recombinant fibrous protein. The E. coli harbours synthetic genes for the secretion of amyloid curli protein subunit (CsgA) tagged with short functional M6A peptide domains. The incorporation of M6A-functionalized amyloid proteins into bacterial cellulose facilitates magnetite nanoparticle nucleation. We achieved a saturation magnetization of 40 emu g−1, a three-fold increase compared to existing strategies. The magnetic bacterial cellulose films demonstrate cytocompatibility and accelerate cell migration in the presence of magnetic field. Microbes have been shown to be effective for synthesizing functional materials. Here, bacterial cellulose is created via a dual microbial approach, with magnetite nanoparticles used to enhance magnetic behavior.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-9"},"PeriodicalIF":7.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00562-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595675","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

Unexpected band structure changes within the higher-temperature antiferromagnetic state of CeBi 铋铈高温反铁磁态的意外带状结构变化

IF 7.5

Communications Materials Pub Date : 2024-11-07 DOI: 10.1038/s43246-024-00692-0

Yevhen Kushnirenko, Brinda Kuthanazhi, Benjamin Schrunk, Evan O’Leary, Andrew Eaton, Robert-Jan Slager, Junyeong Ahn, Lin-Lin Wang, Paul C. Canfield, Adam Kaminski

{"title":"Unexpected band structure changes within the higher-temperature antiferromagnetic state of CeBi","authors":"Yevhen Kushnirenko, Brinda Kuthanazhi, Benjamin Schrunk, Evan O’Leary, Andrew Eaton, Robert-Jan Slager, Junyeong Ahn, Lin-Lin Wang, Paul C. Canfield, Adam Kaminski","doi":"10.1038/s43246-024-00692-0","DOIUrl":"10.1038/s43246-024-00692-0","url":null,"abstract":"The interest in the rare-earth monopnictides was boosted after the discovery of unconventional surface-state pairs in antiferromagnetically ordered NdBi. In contrast to other materials in which such states were reported, CeBi is known to have multiple antiferromagnetic phases. In this study, we perform angle-resolved photoemission spectroscopy (ARPES) measurements in conjunction with density functional theory (DFT) calculations to investigate the evolution of the electronic structure of CeBi upon a series of antiferromagnetic (AFM) transitions. We find evidence for a new AFM transition in addition to two previously known from transport studies. We demonstrate the development of an additional Dirac state in the ( + − + − ) ordered phase and a transformation of unconventional surface-state pairs in the ( + + − − ) ordered phase. This revises the phase diagram of this intriguing material, where there are now three distinct AFM states below TN in zero magnetic field instead of two as it was previously thought. Rare-earth mono-pnictides antiferromagnets have generated recent interest as hosts to topological states and unconventional magnetic states. Here, angle-resolved photoemission spectroscopy reveals a hidden band-structure transition within the higher-temperature antiferromagnetic state of CeBi.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-6"},"PeriodicalIF":7.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00692-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595672","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

Mechanically rechargeable zinc-air batteries for two- and three-wheeler electric vehicles in emerging markets 用于新兴市场两轮和三轮电动车的锌空气机械充电电池

IF 7.5

Communications Materials Pub Date : 2024-11-06 DOI: 10.1038/s43246-024-00662-6

Akhil Kongara, Arun Kumar Samuel, Gunjan Kapadia, Aravind Kumar Chandiran

{"title":"Mechanically rechargeable zinc-air batteries for two- and three-wheeler electric vehicles in emerging markets","authors":"Akhil Kongara, Arun Kumar Samuel, Gunjan Kapadia, Aravind Kumar Chandiran","doi":"10.1038/s43246-024-00662-6","DOIUrl":"10.1038/s43246-024-00662-6","url":null,"abstract":"Mechanically rechargeable zinc-air batteries are considered promising for powering electric vehicles due to their high theoretical energy density, but a few practical hurdles impede their implementation. Understanding the key technical blockades that restrict their implementation will enable quick deployment of these batteries in electric vehicles. This Review analyzes the performance of various on-road electric vehicle segments powered by lithium-ion batteries and compares this with the current rechargeable zinc-air battery development. We discuss the theoretical limits and vehicle-specific blockades involved in achieving the performance of mechanically rechargeable zinc-air battery-powered electric vehicles, equivalent to those powered by lithium-ion batteries. Based on the identified blockades, we present ideas on future research direction on positive and negative electrodes, and battery operation and architecture. Finally, we discuss the conditions under which these batteries can be implemented in various electric vehicle segments. Mechanically rechargeable zinc-air batteries are promising for powering electric vehicles but their implementation is restricted. This Review analyzes the performance of lithium-ion battery-powered electric vehicles and applies these thoughts to vehicles powered by rechargeable zinc-air batteries.","PeriodicalId":10589,"journal":{"name":"Communications Materials","volume":" ","pages":"1-16"},"PeriodicalIF":7.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s43246-024-00662-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142595756","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