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Emerging collective quantum phenomena of excitons in metal-halide perovskites 金属卤化物过氧化物中激子的新集体量子现象
IF 5 3区 材料科学
Mrs Bulletin Pub Date : 2024-08-19 DOI: 10.1557/s43577-024-00765-y
Ajay K. Poonia, Parashurama Salunkhe, Angshuman Nag, K. V. Adarsh
{"title":"Emerging collective quantum phenomena of excitons in metal-halide perovskites","authors":"Ajay K. Poonia, Parashurama Salunkhe, Angshuman Nag, K. V. Adarsh","doi":"10.1557/s43577-024-00765-y","DOIUrl":"https://doi.org/10.1557/s43577-024-00765-y","url":null,"abstract":"<p>Metal-halide perovskites (MHPs) with unique electronic and optical properties have emerged as promising materials with a broad spectrum of applications in photovoltaics, optoelectronic, and photonic devices. The distinct properties and tremendous potential of MHPs are intricately defined by excitons and collective quantum states. This article reviews the excitonic states and coordinated interplay of charge, spin, and lattice. We discuss the recent experimental and theoretical discoveries of excitonic phenomena, as well as correlated states involving condensation and cooperative emission. Additionally, our exploration extends to the structural properties of MHPs that facilitate the emergence of robust quantum states, even at room temperatures. Finally, an overview of the remaining challenges and potential applications of MHPs in quantum optics, coherent light sources, electrically driven amplified spontaneous emission, and superfluorescent lasing is provided.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"32 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Stiff substrate increases mycelium growth rate on surface 坚硬的基质可提高菌丝在表面的生长速度
IF 5 3区 材料科学
Mrs Bulletin Pub Date : 2024-08-16 DOI: 10.1557/s43577-024-00762-1
Libin Yang, Xiaoyue Hu, Zhao Qin
{"title":"Stiff substrate increases mycelium growth rate on surface","authors":"Libin Yang, Xiaoyue Hu, Zhao Qin","doi":"10.1557/s43577-024-00762-1","DOIUrl":"https://doi.org/10.1557/s43577-024-00762-1","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Mycelium is crucial in decomposing biomass and cycling nutrients in nature. While various environmental factors can influence mycelium growth, the role of substrate mechanics is not yet clear. In this study, we investigate the effect of substrate stiffness on mycelium growth. We prepared agar substrates of different concentrations to grow the mycelium, but kept other environmental and chemical conditions consistent. We made a time-lapse recording of the growing history with minimum interruption. We repeated our tests for different species. Our results generally support that mycelium grows faster on a stiffer substrate, <i>Ganoderma lucidum</i> gives the highest growth rate and <i>Pleurotus eryngii</i> is most sensitive to substrate stiffness. We combined experimental characterization and computational simulation to investigate the mechanism and discovered that mycelium concentrates on the surface of a rigid substrate, but penetrates the soft one. Our Monte Carlo simulations illustrate that such a penetration allows mycelium to grow in the three-dimensional space, but effectively slows down the surface occupation speed. Our study provides insights into fungal growth and reveals that the mycelium growth rate can be tuned through substrate stiffness, thus reducing the time for producing mycelium-based composites.</p><h3 data-test=\"abstract-sub-heading\">Impact statement</h3><p>We used agar substrates and tuned its stiffness to culture mycelium and compared tune its stiffness to culture mycelium and compare its growth in a well-controlled condition. Our results revealed that mycelium grows faster on stiffer substrates, thus fully occupying the petri dish surface more quickly. We repeated our study several times by testing four species, <i>P. eryngii</i>, <i>G. lucidum</i>, <i>Trametes versicolor</i>, <i>and Flammulina velutipes,</i> and the stiffest substrate always gives the highest mean growing rate than others. The <i>G. lucidum</i> shows the highest spreading rate that is obtained on the stiffest substrate as 39.1 ± 2.0 mm<sup>2</sup>/h. We found that the mycelium on a soft substrate will grow into the substrate instead of spreading on the stiffer surface. Our Monte Carlo simulations further show that once the fibers grow into a three-dimensional substrate, its growth is slower than growing on a two-dimensional surface, providing a microscopic mechanism of the substrate stiffness effect. This study’s analysis of how substrate stiffness impacts mycelium growth is new, bridging a critical knowledge gap in understanding the relationship between substrate mechanics and fungal ecology. The knowledge from this study has a potential in accelerating sustainable manufacturing of mycelium-based composite by adjusting substrate mechanics.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"56 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Collaborations between African and non-African institutions enhance materials research 非洲和非洲以外机构之间的合作加强了材料研究
IF 5 3区 材料科学
Mrs Bulletin Pub Date : 2024-08-16 DOI: 10.1557/s43577-024-00778-7
Matthew Hauwiller
{"title":"Collaborations between African and non-African institutions enhance materials research","authors":"Matthew Hauwiller","doi":"10.1557/s43577-024-00778-7","DOIUrl":"https://doi.org/10.1557/s43577-024-00778-7","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"7 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Journal Highlights 期刊要闻
IF 5 3区 材料科学
Mrs Bulletin Pub Date : 2024-08-16 DOI: 10.1557/s43577-024-00783-w
{"title":"Journal Highlights","authors":"","doi":"10.1557/s43577-024-00783-w","DOIUrl":"https://doi.org/10.1557/s43577-024-00783-w","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"143 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142184902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
MRS symposium offers pathway to broaden participation in materials research MRS 研讨会为扩大参与材料研究提供了途径
IF 5 3区 材料科学
Mrs Bulletin Pub Date : 2024-08-07 DOI: 10.1557/s43577-024-00780-z
Judy Meiksin, James Torres, Mudasir Yatoo
{"title":"MRS symposium offers pathway to broaden participation in materials research","authors":"Judy Meiksin, James Torres, Mudasir Yatoo","doi":"10.1557/s43577-024-00780-z","DOIUrl":"https://doi.org/10.1557/s43577-024-00780-z","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"33 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Epitaxial growth of excitonic single crystals and heterostructures: Oxides and nitrides 激子单晶和异质结构的外延生长:氧化物和氮化物
IF 5 3区 材料科学
Mrs Bulletin Pub Date : 2024-08-06 DOI: 10.1557/s43577-024-00760-3
Prateeksha Rajpoot, Arpan Ghosh, Amandeep Kaur, Simran Arora, Mohamed Henini, Subhabrata Dhar, Sudeshna Chattopadhyay
{"title":"Epitaxial growth of excitonic single crystals and heterostructures: Oxides and nitrides","authors":"Prateeksha Rajpoot, Arpan Ghosh, Amandeep Kaur, Simran Arora, Mohamed Henini, Subhabrata Dhar, Sudeshna Chattopadhyay","doi":"10.1557/s43577-024-00760-3","DOIUrl":"https://doi.org/10.1557/s43577-024-00760-3","url":null,"abstract":"<p>Excitons in a semiconductor are Coulomb interaction-bound pairs of excited electrons in the conduction band and holes in the valence band, which can either be free bosonic particles with well-defined integer spins, called the free excitons or bound at defect/impurity sites, called bound excitons. Theory predicts several fascinating collective phenomena emanating from excitons, such as Bose–Einstein condensation, high-temperature superconductivity, and strongly correlated excitonic insulator states. There are also proposals to utilize excitons for transferring and processing information. This new paradigm of electronics is expected to be more energy efficient and compatible with optical communication. However, exciton binding energy is an important factor to be considered in realizing the excitons at room temperature (RT). In this respect, certain nitride and oxide semiconductors, such as GaN, InN, and AlN and ZnO, TiO<sub>2</sub>, and Cu<sub>2</sub>O, are especially interesting as the excitonic binding energy in these materials is sufficiently high, which facilitates their survival above RT. By harnessing and controlling the excitonic behavior, researchers can engineer materials with specific functionalities, leading to innovations in materials science and device fabrication. Here, we review recent developments toward the understanding of excitons in certain nitride and oxide semiconductors as well as their heterostructures and nanostructures.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"24 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Excitons in two-dimensional materials and heterostructures: Optical and magneto-optical properties 二维材料和异质结构中的激子:光学和磁光特性
IF 5 3区 材料科学
Mrs Bulletin Pub Date : 2024-08-06 DOI: 10.1557/s43577-024-00754-1
Mikhail Glazov, Ashish Arora, Andrey Chaves, Yara Galvão Gobato
{"title":"Excitons in two-dimensional materials and heterostructures: Optical and magneto-optical properties","authors":"Mikhail Glazov, Ashish Arora, Andrey Chaves, Yara Galvão Gobato","doi":"10.1557/s43577-024-00754-1","DOIUrl":"https://doi.org/10.1557/s43577-024-00754-1","url":null,"abstract":"<p>Two-dimensional (2D) materials are attractive systems to explore exciton physics and possible applications in optoelectronics, opto-spintronics, and quantum technologies. Monolayer transition-metal dichalcogenides (TMDs) are direct gap 2D semiconductor materials with robust excitons and two inequivalent K<sup>+</sup> and K<sup>−</sup> valleys. They can be vertically stacked to form van der Waals (vdW) heterostructures with typically Type II band alignment that enables the formation of interlayer excitons (IEs) and creates Moiré patterns. Magnetic 2D materials are also promising systems to explore exciton physics and their correlations with magnetic properties. They can be stacked with TMD materials to form magnetic vdW heterostructures. Their optical properties are strongly dependent on the number of layers, charge transfer, defects, strain, and twist angle stacking, which offer a versatile platform to control their physical properties. Here, we review some recent discoveries on the exciton and valley properties of van der Waals materials and heterostructures.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"95 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Influence of protein addition in plant-based cheese 添加蛋白质对植物奶酪的影响
IF 5 3区 材料科学
Mrs Bulletin Pub Date : 2024-08-06 DOI: 10.1557/s43577-024-00737-2
Cameryn Sanders, Stacie Dobson, Alejandro G. Marangoni
{"title":"Influence of protein addition in plant-based cheese","authors":"Cameryn Sanders, Stacie Dobson, Alejandro G. Marangoni","doi":"10.1557/s43577-024-00737-2","DOIUrl":"https://doi.org/10.1557/s43577-024-00737-2","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Plant-based cheese alternatives often demonstrate poor melt, stretch, texture, and nutritional value. Dairy cheese has a complex structure of fats and caseins, which has proved challenging to replicate using plant ingredients. In this study, the functional characteristics of starch-structured plant-based cheeses were evaluated as a function of increasing protein contents up to 10% w/w, to determine if protein addition was beneficial to cheese functionality. Any addition of protein to the starch matrix increased melt, decreased oil loss, and increased hardness. Thermo-rheological and thermo-mechanical parameters of the cheeses were determined and correlated to the improved functionality. The relative decrease in the storage modulus (G′) from 40°C to 95°C was strongly correlated to the observed increase in melt. This study suggests that there is potential for the improvement in the functionality and performance of plant-based cheese alternatives by protein addition, while also enhancing their nutritional profile.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3><h3 data-test=\"abstract-sub-heading\">Impact Statement</h3><p>With changing environmental and sustainability demands, as well as dietary preferences, there is an opportunity to close the gap between dairy and plant-based cheeses. Based on the target cost, functionality, and nutritional value, the protein content of plant-based cheeses can be modified so that the functional, textural, and nutritional properties can meet consumer expectations. With an increased understanding of the broader textural properties of plant-based cheeses, we can better engineer the formulations for various food applications. Existing manufacturing equipment and processes can be used to improve sustainability, while the formulations can be altered to create a more desirable product. In this letter, we show that it should not be an expectation to settle for plant-based alternatives that underperform, as there is potential to greatly improve this sector.</p>","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"26 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Robotic synthesis laboratory demonstrates comprehensive interrogation of hypotheses 机器人合成实验室展示了对假设的全面检验
IF 5 3区 材料科学
Mrs Bulletin Pub Date : 2024-08-02 DOI: 10.1557/s43577-024-00769-8
Rahul Rao
{"title":"Robotic synthesis laboratory demonstrates comprehensive interrogation of hypotheses","authors":"Rahul Rao","doi":"10.1557/s43577-024-00769-8","DOIUrl":"https://doi.org/10.1557/s43577-024-00769-8","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"27 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141886343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Unprecedented fracture toughness reported in a tailored NbTaTiHf refractory medium-entropy alloy 据报道,一种定制的 NbTaTiHf 难熔中熵合金具有前所未有的断裂韧性
IF 5 3区 材料科学
Mrs Bulletin Pub Date : 2024-07-30 DOI: 10.1557/s43577-024-00768-9
Jide Oyerinde
{"title":"Unprecedented fracture toughness reported in a tailored NbTaTiHf refractory medium-entropy alloy","authors":"Jide Oyerinde","doi":"10.1557/s43577-024-00768-9","DOIUrl":"https://doi.org/10.1557/s43577-024-00768-9","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"2 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141869403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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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