Mrs Bulletin最新文献

{"title":"Noninvasive current collectors improve current–density distribution during CO2 electrolysis","authors":"Rahul Rao","doi":"10.1557/s43577-024-00697-7","DOIUrl":"https://doi.org/10.1557/s43577-024-00697-7","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"250 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074098","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}

{"title":"Ultrahigh fatigue resistance achieved in additively manufactured aluminum alloy","authors":"Jide Oyerinde","doi":"10.1557/s43577-024-00689-7","DOIUrl":"https://doi.org/10.1557/s43577-024-00689-7","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"135 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074040","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}

{"title":"US policy empowers farmers to sequester carbon","authors":"Sindhu Nathan","doi":"10.1557/s43577-024-00683-z","DOIUrl":"https://doi.org/10.1557/s43577-024-00683-z","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"88 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074042","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}

{"title":"Spider silk inspires a new route to organic magnets","authors":"Varun Ranade","doi":"10.1557/s43577-024-00667-z","DOIUrl":"https://doi.org/10.1557/s43577-024-00667-z","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Spider dragline silk is one of the most versatile natural materials ever known, with several incredible mechanical, optical, thermal, piezoelectric, and biological properties. However, its fundamental magnetic nature remains unknown. In the present study, we report the observation of room-temperature ferromagnetism in metal-free pristine spider dragline silks upon induction of defects in its β-sheet nanocrystals. The magnetism originates in spider silks due to ferromagnetic coupling among carbon radicals (dangling bonds) generated in β-sheet nanocrystals. Direct control over silk’s magnetic properties can be achieved by controlling its microstructure. This was achieved by changing the spinning speed of dragline silks from the spider and observing a direct effect on its magnetism. Owing to the high-temperature stability of silk, their ferromagnetism survives up to 400 K and remains unaffected by high humidity or contact with water. This makes silk-based magnets suitable for medical and technological applications. Spider silk can thus act as a multifunctional nontoxic biomagnet with incredible mechanical properties. Our work demonstrates a new paradigm of magnetic proteins and opens a route toward the bioinspired discovery of iron-free magnetic proteins. Biomimicking its structure is of great importance for designing future medical sensors and actuators, including advancements in tissue engineering and artificial muscles.</p><h3 data-test=\"abstract-sub-heading\">Impact statement</h3><p>It is well known that densely bound β-sheet nanocrystals within silk biopolymers are responsible for their incredible mechanical strength and stiffness. In the present study, we show that these β-sheet nanocrystals also create an ideal environment for stable carbon radicals within the silk structures. A magnetic exchange interaction among these radicals results in a stable and robust carbon-based ferromagnetism at room temperature in these polymers. These are the first ever reports of observation of room-temperature ferromagnetism in pristine spider silks. Inducing defects in these nanocrystals by applying strain on dragline silk samples leads to an enhanced saturation magnetization. A direct effect of nanocrystallite size on the ferromagnetic properties of silk was also observed. Blending magnetism in a bioinspired and metal-free protein-based biomaterial can tremendously impact biomedical applications such as nanoscale drug delivery systems, magnetic resonance imaging contrast agents, magnetic scaffolds, and artificial muscles. Our work will stimulate a new theoretical understanding of the origin of magnetism in peptide-based biomaterials with consequences in quantum biology and spintronics. Our work establishes a novel method to control the magnetic responsivity of proteins by engineering atomic defects.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"5 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140037498","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}

{"title":"Sindhu Nathan worked on climate change policy during Congressional Fellowship","authors":"Elizabeth Wilson","doi":"10.1557/s43577-024-00682-0","DOIUrl":"https://doi.org/10.1557/s43577-024-00682-0","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"241 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140037820","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}

{"title":"Effect of microplatelet orientation in 3D printed microplatelet-reinforced composites with bioinspired microstructures","authors":"","doi":"10.1557/s43577-024-00670-4","DOIUrl":"https://doi.org/10.1557/s43577-024-00670-4","url":null,"abstract":"<span> <h3>Abstract</h3> <p>Complex microstructures are the hallmark of natural ceramic biocomposites, but limited processing methods to reproduce them hinder the understanding of mineral orientation roles on the mechanical properties. This study investigates the influence of microplatelet orientation in composite materials, utilizing the magnetically assisted direct ink writing method (M-DIW) to create microstructured microplatelet-reinforced composites. Experimental and computational approaches are employed to explore the critical role of microplatelet orientation on the flexural properties of these materials. Horizontal microplatelets are found to significantly enhance the composite’s flexural toughness by promoting overlap and increasing fracture energy during crack propagation. Vertical microplatelets contribute to increased flexural modulus and strength. Perpendicular microplatelets facilitate straight crack paths and smoother fracture surfaces. Moreover, complex microstructural designs were introduced by strategically combining microplatelet orientations to optimize mechanical properties. These findings emphasize the vital role of microplatelet orientation in composite materials, offering potential for tailored materials with superior performance.</p> </span> <span> <h3>Impact statement</h3> <p>The findings of this research carry significant implications in the fields of materials science and engineering. By comprehensively examining the role of microplatelet orientation in composite materials, this study offers a novel perspective on how to optimize mechanical properties for various applications. The identification of distinct strengths and limitations associated with horizontal, vertical, and perpendicular microplatelet orientations enables the creation of tailored materials with enhanced mechanical performance. This customization potential holds considerable promise for industries that rely on composite materials, such as aerospace, automotive, and construction. Moreover, the introduction of hierarchical designs presents innovative avenues for engineering materials with superior properties. These designs showcase the potential to achieve a delicate balance between flexural toughness, strength, and modulus, allowing for materials that can outperform traditional monolithic structures. Ultimately, this research empowers materials scientists and engineers to make informed decisions regarding microplatelet orientation, enhancing the efficiency and versatility of composite materials across a wide range of industries. As a result, it brings us one step closer to a future where materials can be precisely tailored to meet the demands of specific applications, driving innovation and progress in diverse sectors.</p> </span> <span> <h3>Graphical abstract</h3> <p><span> <span> <img alt=\"\" src=\"https://static-content.springer.com/image/MediaObjects/43577_2024_670_Figa_HTML.png\"/> </span> </span></p> </span>","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"129 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140037816","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}

{"title":"Engaging underserved audiences with materials science","authors":"Anne Lynn Gillian-Daniel, Shelly Grandell","doi":"10.1557/s43577-024-00681-1","DOIUrl":"https://doi.org/10.1557/s43577-024-00681-1","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"71 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140037821","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}

{"title":"Atomic force microscopy with qPlus sensors","authors":"Franz J. Giessibl","doi":"10.1557/s43577-023-00654-w","DOIUrl":"https://doi.org/10.1557/s43577-023-00654-w","url":null,"abstract":"<p>Atomic force microscopy is one of the most important tools in nanoscience. It employs an atomic probe that can resolve surfaces with atomic and subatomic spatial resolution and manipulate atoms. The qPlus sensor is a quartz-based self-sensing cantilever with a high stiffness that, in contrast to Si cantilevers, allows to oscillate at atomic radius amplitudes in the proximity of reactive surfaces and thus provides a high spatial resolution. This article reports on the development of this sensor and discusses applications in materials research.</p><h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"1 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140018030","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}

{"title":"Journal Highlights","authors":"","doi":"10.1557/s43577-024-00678-w","DOIUrl":"https://doi.org/10.1557/s43577-024-00678-w","url":null,"abstract":"","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"21 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140017963","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}

{"title":"New frontiers in supramolecular design of materials","authors":"","doi":"10.1557/s43577-024-00669-x","DOIUrl":"https://doi.org/10.1557/s43577-024-00669-x","url":null,"abstract":"<h3>Abstract</h3> <p>The powerful functions of materials in the living world utilize supramolecular systems in which molecules self-assemble through noncovalent connections programmed by their structures. This process is of course also programmed by the nature of the chemical environment in which the structures form introducing the potential to autonomously use external energy inputs partly derived from fuel molecules. Our laboratory has focused over the past three decades on integrating this notion of bioinspired supramolecular engineering into the design of novel materials. We present here three projects on functional supramolecular materials that address important societal needs for our future. The first is inspired by the photosynthetic machinery of green plants, creating materials that harvest light to produce fuels for sustainable energy systems. The second example is that of life-like robotic materials that imitate living creatures and effectively transduce different types of energy into mechanical actuation and locomotion of objects for future technologies. The third topic is supramolecular biomaterials that mimic extracellular matrices and provide unprecedented bioactivity to regenerate tissues to achieve longer “healthspans” for humans. In this example, we discuss a recent breakthrough in the structural design of supramolecular motion, which surprisingly led to biomaterials with the potential to reverse paralysis by repairing the brain and the spinal cord.</p> <span> <h3>Graphical abstract</h3> <p><span> <span> <img alt=\"\" src=\"https://static-content.springer.com/image/MediaObjects/43577_2024_669_Figc_HTML.png\"/> </span> </span></p> </span>","PeriodicalId":18828,"journal":{"name":"Mrs Bulletin","volume":"22 1","pages":""},"PeriodicalIF":5.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140005033","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}