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A calcium aluminum rhenium sodalite with reducible rhenium in the sodalite cage 钙铝铼钠盐石，钠盐石笼中含有可还原的铼
IF 1.9 4区 材料科学
MRS Communications Pub Date : 2024-04-12 DOI: 10.1557/s43579-024-00550-7
Danrui Ni, Guangming Cheng, Lun Jin, Chen Yang, Nan Yao, Robert J. Cava
{"title":"A calcium aluminum rhenium sodalite with reducible rhenium in the sodalite cage","authors":"Danrui Ni, Guangming Cheng, Lun Jin, Chen Yang, Nan Yao, Robert J. Cava","doi":"10.1557/s43579-024-00550-7","DOIUrl":"https://doi.org/10.1557/s43579-024-00550-7","url":null,"abstract":"<p>An unreported rhenium-based calcium aluminum sodalite (CARe sodalite) has been synthesized by a traditional solid-state method. The rhenium is located in the sodalite β-cage and can be reduced under 5% H<sub>2</sub> forming gas without breaking the cage framework. Preliminary characterizations of the structural, optical, and magnetic properties are reported.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140567703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancing machine learning classification of microstructures: A workflow study on joining image data and metadata in CNN 加强微结构的机器学习分类：在 CNN 中加入图像数据和元数据的工作流程研究
IF 1.9 4区 材料科学
MRS Communications Pub Date : 2024-04-10 DOI: 10.1557/s43579-024-00549-0
Marie Stiefel, Martin Müller, Björn-Ivo Bachmann, Maria Agustina Guitar, Ullal Pranav Nayak, Frank Mücklich
{"title":"Enhancing machine learning classification of microstructures: A workflow study on joining image data and metadata in CNN","authors":"Marie Stiefel, Martin Müller, Björn-Ivo Bachmann, Maria Agustina Guitar, Ullal Pranav Nayak, Frank Mücklich","doi":"10.1557/s43579-024-00549-0","DOIUrl":"https://doi.org/10.1557/s43579-024-00549-0","url":null,"abstract":"<p>In view of the paradigm shift toward data-driven research in materials science and engineering, handling large amounts of data becomes increasingly important. The application of FAIR (findable, accessible, interoperable, reusable) data principles emphasizes the importance of metadata describing datasets. We propose a novel data processing and machine learning (ML) pipeline to extract metadata from micrograph image files, then combine image data and their metadata for microstructure classification with a deep learning approach compared to a classic ML approach. The ML model attained excellent performances with and without metadata and bears potential for performance improvement of further use cases within the community.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140567413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Platinum nanoparticle synthesis in engineered organic nanoscale reactors for efficient oxygen electro-reduction in alkaline conditions 在工程有机纳米级反应器中合成铂纳米粒子，在碱性条件下实现高效氧气电还原
IF 1.9 4区 材料科学
MRS Communications Pub Date : 2024-03-28 DOI: 10.1557/s43579-024-00547-2
Subhajit Bhunia, Suzatra Chatterjee, Carlos R. Cabrera
{"title":"Platinum nanoparticle synthesis in engineered organic nanoscale reactors for efficient oxygen electro-reduction in alkaline conditions","authors":"Subhajit Bhunia, Suzatra Chatterjee, Carlos R. Cabrera","doi":"10.1557/s43579-024-00547-2","DOIUrl":"https://doi.org/10.1557/s43579-024-00547-2","url":null,"abstract":"<p>We have designed a polymer, hc-TBtd-COP incorporating a Wurster-type redox-active building unit for the <i>in situ</i> reduction and nucleation of platinum nanoparticles which forms an organic polymer-wrapped metal nanoparticle composite. This composite exhibits exceptional mass activity (MA) (about 5 times larger than 20% Pt/C at 0.9 V vs. RHE) and specific activity (SA) (approximately 2 times larger than 20% Pt/C at 0.9 V vs. RHE) for the oxygen reduction reaction. The efficient electrocatalysis results from higher catalytic site dispersion and superior atom utilization efficiency. This research contributes to the advancement of composite materials for enhanced electrocatalytic performance.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Additively manufactured 3D short carbon fiber scaffold for thermoset composites 用于热固性复合材料的快速成型三维短碳纤维支架
IF 1.9 4区 材料科学
MRS Communications Pub Date : 2024-03-26 DOI: 10.1557/s43579-024-00548-1
Chunyan Zhang, Kelvin Fu
{"title":"Additively manufactured 3D short carbon fiber scaffold for thermoset composites","authors":"Chunyan Zhang, Kelvin Fu","doi":"10.1557/s43579-024-00548-1","DOIUrl":"https://doi.org/10.1557/s43579-024-00548-1","url":null,"abstract":"<p>Short-fiber-reinforced polymer composites offer advantages, like flexibility in complex geometries and cost-effectiveness, but typically exhibit lower mechanical properties because of the random orientation of short fibers. In this work, a novel process utilizing shear force to create 3D scaffold with customized fiber alignment for the manufacturing of short carbon fibers (SCF)-reinforced thermoset composites has been presented. The Computed tomography test confirmed the alignment of the SCF along printing directions. The results demonstrate that the aligned SCF-reinforced epoxy composites exhibited a 190% improvement in tensile strength and 388% improvement in tensile modulus compared to neat epoxy.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Organic and perovskite materials and devices 有机和过氧化物材料与器件
IF 1.9 4区 材料科学
MRS Communications Pub Date : 2024-03-20 DOI: 10.1557/s43579-024-00546-3
Dante Zakhidov, Anvar Zakhidov, George Malliaras, Alberto Salleo, Wilhelmus Geerts, Jason Slinker
{"title":"Organic and perovskite materials and devices","authors":"Dante Zakhidov, Anvar Zakhidov, George Malliaras, Alberto Salleo, Wilhelmus Geerts, Jason Slinker","doi":"10.1557/s43579-024-00546-3","DOIUrl":"https://doi.org/10.1557/s43579-024-00546-3","url":null,"abstract":"","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140202343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preparation and morphology controlling of Co3O4 nanostructures and their gas-sensing properties Co3O4 纳米结构的制备、形貌控制及其气体传感特性
IF 1.9 4区 材料科学
MRS Communications Pub Date : 2024-03-20 DOI: 10.1557/s43579-024-00545-4
{"title":"Preparation and morphology controlling of Co3O4 nanostructures and their gas-sensing properties","authors":"","doi":"10.1557/s43579-024-00545-4","DOIUrl":"https://doi.org/10.1557/s43579-024-00545-4","url":null,"abstract":"<h3>Abstract</h3> <p>Co<sub>3</sub>O<sub>4</sub> nanorods and nanosheets were prepared via a facile fluorine-mediated hydrothermal method, followed by thermal conversion. Both the Co<sub>3</sub>O<sub>4</sub> nanorods and nanosheets exhibited a spinel structure, assembling by 30 nm nanograin along one and two dimensions. The primary exposed facet of the Co<sub>3</sub>O<sub>4</sub> nanorods was identified as (110), while the main exposed plane of the Co<sub>3</sub>O<sub>4</sub> nanosheets was (112). Gas sensing results showed the Co<sub>3</sub>O<sub>4</sub> nanorods sensor exhibited higher sensitivity. The Co<sub>3</sub>O<sub>4</sub> nanorods sensor demonstrated excellent sensitivities to toluene and xylene at 200°C, making it a promising candidate for the detection of these specific volatile organic compounds.</p> <span> <h3>Graphical abstract</h3> <p>The response of the Co<sub>3</sub>O<sub>4</sub> nanorods sensor to the test gases at 200°C.</p> <p> <span> <span> <img alt=\"\" src=\"https://static-content.springer.com/image/MediaObjects/43579_2024_545_Figa_HTML.png\"/> </span> </span></p> </span>","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140202553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluating the performance of p-type organic field-effect transistor using different source–drain electrodes 评估使用不同源漏电极的 p 型有机场效应晶体管的性能
IF 1.9 4区 材料科学
MRS Communications Pub Date : 2024-03-20 DOI: 10.1557/s43579-024-00539-2
Mona Azimi, Jiaxin Fan, Fabio Cicoira
{"title":"Evaluating the performance of p-type organic field-effect transistor using different source–drain electrodes","authors":"Mona Azimi, Jiaxin Fan, Fabio Cicoira","doi":"10.1557/s43579-024-00539-2","DOIUrl":"https://doi.org/10.1557/s43579-024-00539-2","url":null,"abstract":"<p>We present our findings on organic field-effect transistors (OFETs) that utilize the conjugated copolymer poly[4-(4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b′]-dithiophen-2-yl)alt[1,2,5]thiadiazolo[3,4-c]pyridine] as the active material, with electrodes composed of arrays of carbon nanotubes (CNTs). We employed three types of source and drain electrodes: gold, titanium, and CNT array electrodes with titanium contact pads. A comparison of characteristics of OFETs using these three different electrodes revealed the effectiveness of CNTs in enhancing charge carrier injection for OFETs. The OFETs based on CNT electrodes showed a twofold increase in the drain current and a threefold increase in charge carrier mobility compared to those with gold electrodes.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140202344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A highly stable and efficient organic microcavity polariton laser 高度稳定、高效的有机微腔偏振子激光器
IF 1.9 4区 材料科学
MRS Communications Pub Date : 2024-03-19 DOI: 10.1557/s43579-024-00543-6
Julia Witt, Andreas Mischok, Florian Le Roux, Malte C. Gather
{"title":"A highly stable and efficient organic microcavity polariton laser","authors":"Julia Witt, Andreas Mischok, Florian Le Roux, Malte C. Gather","doi":"10.1557/s43579-024-00543-6","DOIUrl":"https://doi.org/10.1557/s43579-024-00543-6","url":null,"abstract":"<p>With their remarkably low thresholds, organic polariton lasers are a promising alternative to organic photonic lasers. However, device stability remains a challenge, in part due to material degradation during deposition of the top dielectric mirror. We demonstrate polariton lasers based on 4,4′-Bis(4-(9H-carbazol-9-yl)styryl)biphenyl (BSBCz) as active material that achieve a low lasing threshold of 8.7 μJ/cm<sup>2</sup>, and we show that a ZrO<sub>2</sub> protection layer between active layer and top mirror significantly improves stability. Optimized devices exhibit minimal degradation after 100,000 excitation pulses at 3.8 times above threshold. Our findings establish BSBCz as an attractive candidate for future injection driven polariton lasers.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140202345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication of a stacked Archimedean spiral reactor with porous carbon walls using 3D-printed PLA as internal sacrificial template and carbonized whey powder as porous carbon matrix 以 3D 打印聚乳酸为内部牺牲模板，以碳化乳清粉为多孔碳基质，制造具有多孔碳壁的叠层式阿基米德螺旋反应器
IF 1.9 4区 材料科学
MRS Communications Pub Date : 2024-03-19 DOI: 10.1557/s43579-024-00544-5
{"title":"Fabrication of a stacked Archimedean spiral reactor with porous carbon walls using 3D-printed PLA as internal sacrificial template and carbonized whey powder as porous carbon matrix","authors":"","doi":"10.1557/s43579-024-00544-5","DOIUrl":"https://doi.org/10.1557/s43579-024-00544-5","url":null,"abstract":"<h3>Abstract</h3> <p>This study introduces a method to create porous carbon structures with intricate internal voids. 3D-printed PLA acts as an internal sacrificial template, combined with carbonized whey powder as the porous carbon matrix. Sintering whey powder at 150°C yields solid pieces that, upon carbonization, result in highly porous carbon objects while maintaining the original mold shape. Temperature control ensures successful whey powder sintering before PLA melting. The use of PLA sacrificial templates, along with whey carbonization, allows for developing devices with finely tailored internal voids, as demonstrated through a double Archimedean spiral reactor with porous carbon walls.</p> <span> <h3>Graphical abstract</h3> <p> <span> <span> <img alt=\"\" src=\"https://static-content.springer.com/image/MediaObjects/43579_2024_544_Figa_HTML.png\"/> </span> </span></p> </span>","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140202467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Temperature- and illumination-dependent recombination of the photoinduced charge carriers in organic–inorganic hybrid perovskite solar cells 有机-无机混合型过氧化物太阳能电池中光诱导电荷载流子的重组与温度和光照有关
IF 1.9 4区 材料科学
MRS Communications Pub Date : 2024-03-18 DOI: 10.1557/s43579-024-00540-9
{"title":"Temperature- and illumination-dependent recombination of the photoinduced charge carriers in organic–inorganic hybrid perovskite solar cells","authors":"","doi":"10.1557/s43579-024-00540-9","DOIUrl":"https://doi.org/10.1557/s43579-024-00540-9","url":null,"abstract":"<h3>Abstract</h3> <p>We present the analytic workflow to understand the temperature and illumination-intensity-dependent recombination of the photoinduced charge carriers in organic–inorganic hybrid perovskite solar cells based on methylammonium lead iodide (CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>) thin films. The temperature-dependent, open-circuit voltage analysis reveals that the recombination of photoinduced charge carriers predominantly occurs at our PEDOT:PSS/CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> interface as well as in the depletion region. Taking into account the structural phase transition in CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> films, as confirmed using temperature-dependent x-ray diffraction spectra and dielectric constant measurements, the illumination-dependent short-circuit current and open-circuit voltage analysis shows both bimolecular and trap-assisted recombination is dominant in our solution-processed perovskite solar cells.</p> <span> <h3>Graphical abstract</h3> <p> <span> <span> <img alt=\"\" src=\"https://static-content.springer.com/image/MediaObjects/43579_2024_540_Figa_HTML.png\"/> </span> </span></p> </span>","PeriodicalId":19016,"journal":{"name":"MRS Communications","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140146380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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