Sustainable polymers are expected to alleviate the dual pressure of energy and environment when integrated with advanced phase change material (PCM) systems, hence promoting carbon neutrality goals. The excellent intrinsic properties and flexible designability of sustainable polymers also enable them to demonstrate competitiveness in the preparation of cutting-edge phase-change composites. However, the integration methods, structure-performance relationships, and recycling technologies of these emerging form-stable PCMs (FSPCMs) have been hardly reviewed. Herein, we systematically summarize the recent progress of sustainable polymer-based FSPCMs including the preparation from bio-based chemicals to polymers, encapsulation strategy of PCMs, upgrade methods, performance influencing factors, multi-energy utilization, and advanced applications. Meanwhile, we also concluded the design methodologies and recovery strategies of recyclable polymer FSPCMs and provided in-depth insights into their efficient recycling. In addition, we proposed the analysis results and optimization strategies for two key technical parameters, crystallization fraction and thermal stability. Finally, a research perspective was presented to highlight the emerging research directions of green FSPCMs throughout the lifecycle. This review hopefully provides guidance for the design and upgrading of sustainable polymer-based phase-change composites from high performance/multifunction to recycling and inspires in-depth research on the structure-performance relationships.
{"title":"Integration of sustainable polymers with phase change materials","authors":"Jingkai Liu, Xinbei Zhu, Jinyue Dai, Kerong Yang, Shuaipeng Wang, Xiaoqing Liu","doi":"10.1016/j.pmatsci.2025.101447","DOIUrl":"https://doi.org/10.1016/j.pmatsci.2025.101447","url":null,"abstract":"Sustainable polymers are expected to alleviate the dual pressure of energy and environment when integrated with advanced phase change material (PCM) systems, hence promoting carbon neutrality goals. The excellent intrinsic properties and flexible designability of sustainable polymers also enable them to demonstrate competitiveness in the preparation of cutting-edge phase-change composites. However, the integration methods, structure-performance relationships, and recycling technologies of these emerging form-stable PCMs (FSPCMs) have been hardly reviewed. Herein, we systematically summarize the recent progress of sustainable polymer-based FSPCMs including the preparation from bio-based chemicals to polymers, encapsulation strategy of PCMs, upgrade methods, performance influencing factors, multi-energy utilization, and advanced applications. Meanwhile, we also concluded the design methodologies and recovery strategies of recyclable polymer FSPCMs and provided in-depth insights into their efficient recycling. In addition, we proposed the analysis results and optimization strategies for two key technical parameters, crystallization fraction and thermal stability. Finally, a research perspective was presented to highlight the emerging research directions of green FSPCMs throughout the lifecycle. This review hopefully provides guidance for the design and upgrading of sustainable polymer-based phase-change composites from high performance/multifunction to recycling and inspires in-depth research on the structure-performance relationships.","PeriodicalId":411,"journal":{"name":"Progress in Materials Science","volume":"11 1","pages":""},"PeriodicalIF":37.4,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-27DOI: 10.1016/j.pmatsci.2025.101437
Christian Rüssel, Wolfgang Wisniewski
Traditionally, glass-ceramics are inorganic non-metallic materials obtained by the controlled crystallization of a glass. A modern definition has widened this class of materials to solid materials containing at least one glassy and one crystalline phase. The glass is usually obtained by quenching a melt. Re-heating it to a temperature slightly above the glass transition temperature allows nucleation while an often applied second annealing step at a higher temperature causes most of the crystal growth. As in most materials, the composition and the microstructure of glass-ceramics widely governs their properties. The morphology, i.e., size, and aspect ratio of the crystal phases is of special significance and depends on the crystal structure and the occurring growth mechanism. The morphology is also affected by the chemical composition and the temperature/time schedule of the crystallization process, here components of minor concentrations can have a great effect. This review addresses the effects of nucleating agents, phase separation, crystal orientation alignment and stress introduction as tooled to tailor the properties of glass-ceramic materials. Future developments in the field of glass-ceramics are discussed.
{"title":"Glass-ceramic engineering-tailoring the microstructure and properties","authors":"Christian Rüssel, Wolfgang Wisniewski","doi":"10.1016/j.pmatsci.2025.101437","DOIUrl":"https://doi.org/10.1016/j.pmatsci.2025.101437","url":null,"abstract":"Traditionally, glass-ceramics are inorganic non-metallic materials obtained by the controlled crystallization of a glass. A modern definition has widened this class of materials to solid materials containing at least one glassy and one crystalline phase. The glass is usually obtained by quenching a melt. Re-heating it to a temperature slightly above the glass transition temperature allows nucleation while an often applied second annealing step at a higher temperature causes most of the crystal growth. As in most materials, the composition and the microstructure of glass-ceramics widely governs their properties. The morphology, i.e., size, and aspect ratio of the crystal phases is of special significance and depends on the crystal structure and the occurring growth mechanism. The morphology is also affected by the chemical composition and the temperature/time schedule of the crystallization process, here components of minor concentrations can have a great effect. This review addresses the effects of nucleating agents, phase separation, crystal orientation alignment and stress introduction as tooled to tailor the properties of glass-ceramic materials. Future developments in the field of glass-ceramics are discussed.","PeriodicalId":411,"journal":{"name":"Progress in Materials Science","volume":"14 1","pages":""},"PeriodicalIF":37.4,"publicationDate":"2025-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143050673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-25DOI: 10.1016/j.pmatsci.2025.101446
Jake Hardy, Holger Fiedler, John Kennedy
Tin halide perovskites are seen as the leading lead-free metal halide perovskite due to the high degree of similarity with the conventional lead-based materials. However, the chemistry of tin halide perovskites is distinct from that of lead halide perovskites, resulting in a material that is challenging to produce at a sufficient quality that enables high performing photovoltaic cells. This review seeks to summarise and discuss the existing literature on tin halide perovskites and photovoltaic devices that utilise them. The first section of this review will summarise the progress that has been made in the field of tin halide perovskite photovoltaics, and then in detail discuss various aspects of tin halide perovskites, including their basic semiconducting properties, defect physics, crystallinity, and degradation mechanisms, along with the strategies that have been employed to control these aspects and potential theoretical options that yet to have been explored. Future research directions for tin halide perovskite will include finding new additives for regulating; 1) the growth rate, 2) the defect densities, and 3) the stability of tin halide perovskites.
{"title":"A review on the current status and chemistry of tin halide perovskite films for photovoltaics","authors":"Jake Hardy, Holger Fiedler, John Kennedy","doi":"10.1016/j.pmatsci.2025.101446","DOIUrl":"https://doi.org/10.1016/j.pmatsci.2025.101446","url":null,"abstract":"Tin halide perovskites are seen as the leading lead-free metal halide perovskite due to the high degree of similarity with the conventional lead-based materials. However, the chemistry of tin halide perovskites is distinct from that of lead halide perovskites, resulting in a material that is challenging to produce at a sufficient quality that enables high performing photovoltaic cells. This review seeks to summarise and discuss the existing literature on tin halide perovskites and photovoltaic devices that utilise them. The first section of this review will summarise the progress that has been made in the field of tin halide perovskite photovoltaics, and then in detail discuss various aspects of tin halide perovskites, including their basic semiconducting properties, defect physics, crystallinity, and degradation mechanisms, along with the strategies that have been employed to control these aspects and potential theoretical options that yet to have been explored. Future research directions for tin halide perovskite will include finding new additives for regulating; 1) the growth rate, 2) the defect densities, and 3) the stability of tin halide perovskites.","PeriodicalId":411,"journal":{"name":"Progress in Materials Science","volume":"19 1","pages":""},"PeriodicalIF":37.4,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143031233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-23DOI: 10.1016/j.pmatsci.2025.101436
Guo Yin, Yufeng Zheng, Ming Li, Guanghao Wu, Yumin Luo
Stroke is a major cause of disability and mortality globally and is typically divided into ischemic and hemorrhagic stroke. When a stroke occurs, either blockage or rupture of cerebral blood vessels results in rapid neurological dysfunction because of ischemia or hemorrhage in the cerebral parenchyma. Although current treatment methods, such as intravascular thrombolysis, surgical hematoma evacuation, and neuroprotection, can partially alleviate symptoms, these strategies often fail to fully restore functional impairments resulting from brain injury. Nucleic acid-based therapy is an emerging treatment modality aimed at modulating the expression of disease-associated genes by introducing exogenous nucleic acids that exert therapeutic effects at the genetic level. However, the inherent properties of naked RNA dictate the necessity for carrier-mediated delivery in vivo. With the development of biomedical engineering and nanotechnology, nucleic acid-based delivery systems have shown promise for the clinical translation of stroke therapies owing to their excellent biocompatibility and efficient delivery capability. This review emphasizes the advancements in nucleic acid-based delivery systems for stroke therapy and anticipates their future prospective potential to provide new insights and directions for precise stroke therapy.
{"title":"Breaking through barrier: The emerging role of nucleic acids-based drug delivery in stroke","authors":"Guo Yin, Yufeng Zheng, Ming Li, Guanghao Wu, Yumin Luo","doi":"10.1016/j.pmatsci.2025.101436","DOIUrl":"https://doi.org/10.1016/j.pmatsci.2025.101436","url":null,"abstract":"Stroke is a major cause of disability and mortality globally and is typically divided into ischemic and hemorrhagic stroke. When a stroke occurs, either blockage or rupture of cerebral blood vessels results in rapid neurological dysfunction because of ischemia or hemorrhage in the cerebral parenchyma. Although current treatment methods, such as intravascular thrombolysis, surgical hematoma evacuation, and neuroprotection, can partially alleviate symptoms, these strategies often fail to fully restore functional impairments resulting from brain injury. Nucleic acid-based therapy is an emerging treatment modality aimed at modulating the expression of disease-associated genes by introducing exogenous nucleic acids that exert therapeutic effects at the genetic level. However, the inherent properties of naked RNA dictate the necessity for carrier-mediated delivery <em>in vivo</em>. With the development of biomedical engineering and nanotechnology, nucleic acid-based delivery systems have shown promise for the clinical translation of stroke therapies owing to their excellent biocompatibility and efficient delivery capability. This review emphasizes the advancements in nucleic acid-based delivery systems for stroke therapy and anticipates their future prospective potential to provide new insights and directions for precise stroke therapy.","PeriodicalId":411,"journal":{"name":"Progress in Materials Science","volume":"34 1","pages":""},"PeriodicalIF":37.4,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143026856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Piezoelectric materials, due to their unique electromechanical coupling properties, play an indispensable role in electromechanical devices. Therefore, continuously enhancing the performance of piezoelectric materials and maximizing their intrinsic piezoelectric properties are key to the development of related devices. However, since the discovery of piezoelectric materials, these modulation methods have been limited to intrinsic property enhancements such as ion doping, defect introduction, domain engineering, polarization optimization, and grain texturing. Although significant progress has been made, these approaches appear to have reached a developmental bottleneck. As a result, the emergence of piezoelectric metamaterials, combining the intrinsic piezoelectric properties of piezoelectric materials with the unnatural structural characteristics of mechanical metamaterials, provides a new pathway for the further development of piezoelectric materials and devices. In this review, a detailed discussion on the design principles and characteristics of piezoelectric metamaterials is conducted, including the construction and control of artificial vibration modes and non-zero piezoelectric coefficients. Subsequently, an in-depth analysis of the design strategies for artificial structures, various advanced fabrication methods, and the latest applications in actuators, energy harvesters, sensors, acoustic transducers, and smart devices are provided. Finally, based on a comprehensive summary of the latest advancements in piezoelectric metamaterials, future research prospects are proposed to guide and assist in the study of piezoelectric metamaterials and the development of piezoelectric materials and devices. Through the detailed discussion in this review, it is believed that piezoelectric metamaterials with the integration of “material-structure-function”, currently in a vigorous development stage, are poised to demonstrate significant developmental potential in the foreseeable future, making the tangible reality realization for disruptive innovation of self-adaptive smart devices.
{"title":"Artificial piezoelectric metamaterials","authors":"Ziyan Gao, Yu Lei, Zhanmiao Li, Jikun Yang, Bo Yu, Xiaoting Yuan, Zewei Hou, Jiawang Hong, Shuxiang Dong","doi":"10.1016/j.pmatsci.2025.101434","DOIUrl":"https://doi.org/10.1016/j.pmatsci.2025.101434","url":null,"abstract":"Piezoelectric materials, due to their unique electromechanical coupling properties, play an indispensable role in electromechanical devices. Therefore, continuously enhancing the performance of piezoelectric materials and maximizing their intrinsic piezoelectric properties are key to the development of related devices. However, since the discovery of piezoelectric materials, these modulation methods have been limited to intrinsic property enhancements such as ion doping, defect introduction, domain engineering, polarization optimization, and grain texturing. Although significant progress has been made, these approaches appear to have reached a developmental bottleneck. As a result, the emergence of piezoelectric metamaterials, combining the intrinsic piezoelectric properties of piezoelectric materials with the unnatural structural characteristics of mechanical metamaterials, provides a new pathway for the further development of piezoelectric materials and devices. In this review, a detailed discussion on the design principles and characteristics of piezoelectric metamaterials is conducted, including the construction and control of artificial vibration modes and non-zero piezoelectric coefficients. Subsequently, an in-depth analysis of the design strategies for artificial structures, various advanced fabrication methods, and the latest applications in actuators, energy harvesters, sensors, acoustic transducers, and smart devices are provided. Finally, based on a comprehensive summary of the latest advancements in piezoelectric metamaterials, future research prospects are proposed to guide and assist in the study of piezoelectric metamaterials and the development of piezoelectric materials and devices. Through the detailed discussion in this review, it is believed that piezoelectric metamaterials with the integration of “material-structure-function”, currently in a vigorous development stage, are poised to demonstrate significant developmental potential in the foreseeable future, making the tangible reality realization for disruptive innovation of self-adaptive smart devices.","PeriodicalId":411,"journal":{"name":"Progress in Materials Science","volume":"9 1","pages":""},"PeriodicalIF":37.4,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142991537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MXenes, a revolutionary class of two-dimensional transition metal carbides and nitrides, have emerged as exceptional materials for advanced composite applications due to their remarkable properties. MXene-based composites exhibit electrical conductivities exceeding 15,000 S/cm, thermal conductivities up to 60 W/m·K, and mechanical strengths surpassing 500 MPa, making them ideal for applications in energy storage, aerospace, and biomedical engineering. This review explores the synthesis of MXene-filled composites via chemical etching, intercalation (enhancing layer spacing by 20–50%), and functionalization (improving compatibility by 70%), and highlights how these processes shape the material’s properties. Applications are discussed, including lithium-ion batteries with capacities exceeding 300 mAh/g and supercapacitors achieving energy densities over 60 Wh/kg. Furthermore, the integration of MXene composites into 3D printing technology enables resolutions as fine as 100 microns, offering unprecedented customization and precision in manufacturing. Machine learning plays a pivotal role in optimizing synthesis protocols, accelerating material discovery by 30–50%, and achieving predictive modeling accuracies above 90%, thereby revolutionizing the design and performance of MXene-based materials. This review will also presents a data-driven perspective on the synthesis, properties, and applications of MXene-filled composites, bridging advanced research and practical innovation to inspire transformative advancements across multiple industries.
{"title":"MXenes and its composite structures: synthesis, properties, applications, 3D/4D printing, and artificial intelligence; machine learning integration","authors":"Vimukthi Dananjaya, Nethmi Hansika, Sathish Marimuthu, Venkata Chevali, Yogendra Kumar Mishra, Andrews Nirmala Grace, Nisa Salim, Chamil Abeykoon","doi":"10.1016/j.pmatsci.2025.101433","DOIUrl":"https://doi.org/10.1016/j.pmatsci.2025.101433","url":null,"abstract":"MXenes, a revolutionary class of two-dimensional transition metal carbides and nitrides, have emerged as exceptional materials for advanced composite applications due to their remarkable properties. MXene-based composites exhibit electrical conductivities exceeding 15,000 S/cm, thermal conductivities up to 60 W/m·K, and mechanical strengths surpassing 500 MPa, making them ideal for applications in energy storage, aerospace, and biomedical engineering. This review explores the synthesis of MXene-filled composites via chemical etching, intercalation (enhancing layer spacing by 20–50%), and functionalization (improving compatibility by 70%), and highlights how these processes shape the material’s properties. Applications are discussed, including lithium-ion batteries with capacities exceeding 300 mAh/g and supercapacitors achieving energy densities over 60 Wh/kg. Furthermore, the integration of MXene composites into 3D printing technology enables resolutions as fine as 100 microns, offering unprecedented customization and precision in manufacturing. Machine learning plays a pivotal role in optimizing synthesis protocols, accelerating material discovery by 30–50%, and achieving predictive modeling accuracies above 90%, thereby revolutionizing the design and performance of MXene-based materials. This review will also presents a data-driven perspective on the synthesis, properties, and applications of MXene-filled composites, bridging advanced research and practical innovation to inspire transformative advancements across multiple industries.","PeriodicalId":411,"journal":{"name":"Progress in Materials Science","volume":"1 1","pages":""},"PeriodicalIF":37.4,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142991544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-17DOI: 10.1016/j.pmatsci.2025.101432
Yiming Zhang, Hang Ben Yin, Lingzhi Huang, Li Ding, Song Lei, Shane G. Telfer, Jürgen Caro, Haihui Wang
Metal-organic framework (MOF) membranes have emerged as a breakthrough technology for gas separation, offering unparalleled selectivity and permeability due to their high surface area, tuneable pore size, and versatile chemical functionalities. Encompassing the immense recent progress in the development of MOF-based membranes as supported thin layers as well as mixed matrix membranes (MMMs), this review is focussed on recent developments such as electrodeposition, use of glassy MOFs, two-dimensional (2D) MOF nanosheets and use of artificial intelligence (AI) to assist in the design of MOF membranes. Each type of MOF membrane presents unique advantages: polycrystalline membranes excel in molecular sieving, thin-film composite membranes provide enhanced gas permeance, MMMs combine MOF properties with polymer flexibility, and MOF glass membranes offer exceptional stability under harsh conditions. The comprehensive development of MOF membranes promises to revolutionize gas separation technologies, significantly contributing to environmental sustainability and economic efficiency. Finally, future advances in MOF membranes will focus on improving stability, scalability, and integration into industrial processes, with key research areas including improving chemical and thermal stability, developing scalable synthesis methods, and employing AI and machine learning for material optimization
{"title":"MOF membranes for gas separations","authors":"Yiming Zhang, Hang Ben Yin, Lingzhi Huang, Li Ding, Song Lei, Shane G. Telfer, Jürgen Caro, Haihui Wang","doi":"10.1016/j.pmatsci.2025.101432","DOIUrl":"https://doi.org/10.1016/j.pmatsci.2025.101432","url":null,"abstract":"Metal-organic framework (MOF) membranes have emerged as a breakthrough technology for gas separation, offering unparalleled selectivity and permeability due to their high surface area, tuneable pore size, and versatile chemical functionalities. Encompassing the immense recent progress in the development of MOF-based membranes as supported thin layers as well as mixed matrix membranes (MMMs), this review is focussed on recent developments such as electrodeposition, use of glassy MOFs, two-dimensional (2D) MOF nanosheets and use of artificial intelligence (AI) to assist in the design of MOF membranes. Each type of MOF membrane presents unique advantages: polycrystalline membranes excel in molecular sieving, thin-film composite membranes provide enhanced gas permeance, MMMs combine MOF properties with polymer flexibility, and MOF glass membranes offer exceptional stability under harsh conditions. The comprehensive development of MOF membranes promises to revolutionize gas separation technologies, significantly contributing to environmental sustainability and economic efficiency. Finally, future advances in MOF membranes will focus on improving stability, scalability, and integration into industrial processes, with key research areas including improving chemical and thermal stability, developing scalable synthesis methods, and employing AI and machine learning for material optimization","PeriodicalId":411,"journal":{"name":"Progress in Materials Science","volume":"34 1","pages":""},"PeriodicalIF":37.4,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-17DOI: 10.1016/j.pmatsci.2025.101431
Pavel Lejček, Mojmír Šob
Grain boundary segregation is one of the crucial phenomena affecting the properties of the materials and their technological applications. However, 50 years since starting its intensive study, there still remain open questions and controversies related to this phenomenon. Probably, the most serious uncertainty consists in understanding the segregation entropy. While this term seems to result directly from experimental studies of temperature dependence of chemical composition of grain boundaries, it is mostly neglected in theoretical calculations. This negligence arises from the fact that most of the first-principles calculations are performed at the temperature of 0 K and, therefore, the segregation entropy is usually not evaluated. Consequently, it is supposed that its contribution at enhanced temperatures is negligible which is supported by scarce calculations of the vibrational entropy of grain boundary segregation. Another question discussed presently between theoreticians on one hand and experimenters on the other hand deals with physical meaning of the values of the thermodynamic quantities determined from the average grain boundary concentration.This paper summarizes the present knowledge on the segregation entropy in metallic hosts and documents some issues in which the segregation entropy plays important and irreplaceable role. These issues are represented by the enthalpy–entropy compensation effect, by the method of prediction of grain boundary segregation and by comparison of calculated results and experimental or predicted data. The role of the entropy is also crucial in the recently discussed cases of the entropy-dominated and entropy-driven grain boundary segregation. Finally, collective processes related to grain boundaries – grain boundary migration and intergranular fracture – are discussed suggesting that these processes, based on coordinated behavior of numerous neighbor atoms in the grain boundary core, will be better characterized by average values of characteristic quantities rather than by the values of these quantities for individual sites.
{"title":"Entropy: A controversy between experiment and calculations in grain boundary segregation","authors":"Pavel Lejček, Mojmír Šob","doi":"10.1016/j.pmatsci.2025.101431","DOIUrl":"https://doi.org/10.1016/j.pmatsci.2025.101431","url":null,"abstract":"Grain boundary segregation is one of the crucial phenomena affecting the properties of the materials and their technological applications. However, 50 years since starting its intensive study, there still remain open questions and controversies related to this phenomenon. Probably, the most serious uncertainty consists in understanding the segregation entropy. While this term seems to result directly from experimental studies of temperature dependence of chemical composition of grain boundaries, it is mostly neglected in theoretical calculations. This negligence arises from the fact that most of the first-principles calculations are performed at the temperature of 0 K and, therefore, the segregation entropy is usually not evaluated. Consequently, it is supposed that its contribution at enhanced temperatures is negligible which is supported by scarce calculations of the vibrational entropy of grain boundary segregation. Another question discussed presently between theoreticians on one hand and experimenters on the other hand deals with physical meaning of the values of the thermodynamic quantities determined from the average grain boundary concentration.This paper summarizes the present knowledge on the segregation entropy in metallic hosts and documents some issues in which the segregation entropy plays important and irreplaceable role. These issues are represented by the enthalpy–entropy compensation effect, by the method of prediction of grain boundary segregation and by comparison of calculated results and experimental or predicted data. The role of the entropy is also crucial in the recently discussed cases of the entropy-dominated and entropy-driven grain boundary segregation. Finally, collective processes related to grain boundaries – grain boundary migration and intergranular fracture – are discussed suggesting that these processes, based on coordinated behavior of numerous neighbor atoms in the grain boundary core, will be better characterized by average values of characteristic quantities rather than by the values of these quantities for individual sites.","PeriodicalId":411,"journal":{"name":"Progress in Materials Science","volume":"22 1","pages":""},"PeriodicalIF":37.4,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142987862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2025-01-15DOI: 10.1016/j.pmatsci.2025.101429
Changjun Cheng, Yu Zou
Nanostructured materials (NsMs) exhibit many interesting and useful properties; yet they are generally unstable at elevated temperatures limiting their process methods and applications. Many emerging alloys, especially high-entropy alloys (HEAs) and related multicomponent alloys, are reported to offer enhanced thermal stability and mechanical strength. The identification of such multicomponent alloys out of a vast compositional space, however, is a daunting task – many are predominantly developed through sequential and time-consuming trial-and-error approaches. Thus, high-throughput strategies are urgently needed to accelerate the discovery of useful nanostructured HEAs (Ns-HEAs). As the fields of Ns-HEAs and high-throughput methods are developing rapidly, an avenue of research is to be exploited. This review focuses on the literature on the high-throughput fabrication, characterization, and testing of the structures, compositions, mechanical properties, and thermal stabilities of a wide range of Ns-HEAs reported over the past two decades. This article also includes recent high-throughput methods that could be potentially used for Ns-HEAs and HEA systems that could potentially be fabricated into Ns-HEAs. Moreover, we review various high-throughput data analysis methods, including theoretical screening, simulation, and machine learning. The article concludes with progress, challenges, and opportunities about the future directions in the accelerated discovery of Ns-HEAs via high-throughput methodologies.
{"title":"Accelerated discovery of nanostructured high-entropy and multicomponent alloys via high-throughput strategies","authors":"Changjun Cheng, Yu Zou","doi":"10.1016/j.pmatsci.2025.101429","DOIUrl":"https://doi.org/10.1016/j.pmatsci.2025.101429","url":null,"abstract":"Nanostructured materials (NsMs) exhibit many interesting and useful properties; yet they are generally unstable at elevated temperatures limiting their process methods and applications. Many emerging alloys, especially high-entropy alloys (HEAs) and related multicomponent alloys, are reported to offer enhanced thermal stability and mechanical strength. The identification of such multicomponent alloys out of a vast compositional space, however, is a daunting task – many are predominantly developed through sequential and time-consuming trial-and-error approaches. Thus, high-throughput strategies are urgently needed to accelerate the discovery of useful nanostructured HEAs (Ns-HEAs). As the fields of Ns-HEAs and high-throughput methods are developing rapidly, an avenue of research is to be exploited. This review focuses on the literature on the high-throughput fabrication, characterization, and testing of the structures, compositions, mechanical properties, and thermal stabilities of a wide range of Ns-HEAs reported over the past two decades. This article also includes recent high-throughput methods that could be potentially used for Ns-HEAs and HEA systems that could potentially be fabricated into Ns-HEAs. Moreover, we review various high-throughput data analysis methods, including theoretical screening, simulation, and machine learning. The article concludes with progress, challenges, and opportunities about the future directions in the accelerated discovery of Ns-HEAs via high-throughput methodologies.","PeriodicalId":411,"journal":{"name":"Progress in Materials Science","volume":"42 1","pages":""},"PeriodicalIF":37.4,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142981490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Co-assembly is a key phenomenon in life, playing a significant role in various biological processes. In particular, supramolecular composite hydrogels (SMCHs) form through the incorporation of diverse functionalities, such as small molecules, polymers, peptides, proteins, nanoparticles, metal ions, and carbon nanomaterials via a co-assembly approach. This approach imparts tunable properties to the resulting hydrogels, including mechanical strength, elasticity, porosity, and responsiveness to external stimuli, thereby enhancing their overall performance compared to their individual constituents. The versatile advantages of SMCHs extend their applications to fields such as targeted drug delivery, tissue engineering, and regenerative medicine. This review offers a comprehensive overview of the key design principles and the physical strategies used to transform supramolecular hydrogels (SMHs) into SMCHs. Furthermore, it highlights recent advances in their biomedical applications, including 3D cell culture, antibacterial properties, anti-inflammatory effects, wound healing, cancer therapy, treatment of ocular infections, dental tissue repair, gastric tissue repair, cardiac tissue regeneration, bone regeneration, and disk repair, is systematically highlighted. We aim to provide innovative perspectives and critical insights into the design and development of SMCHs while addressing their current limitations and challenges, with the goal of advancing their practical applications
{"title":"Physical strategies to engineer supramolecular composite hydrogels for advanced biomedical applications","authors":"Sravan Baddi, Auphedeous Y. Dang-i, Fengli Gao, Xiaxin Qiu, Chuanliang Feng","doi":"10.1016/j.pmatsci.2025.101428","DOIUrl":"https://doi.org/10.1016/j.pmatsci.2025.101428","url":null,"abstract":"Co-assembly is a key phenomenon in life, playing a significant role in various biological processes. In particular, supramolecular composite hydrogels (SMCHs) form through the incorporation of diverse functionalities, such as small molecules, polymers, peptides, proteins, nanoparticles, metal ions, and carbon nanomaterials via a co-assembly approach. This approach imparts tunable properties to the resulting hydrogels, including mechanical strength, elasticity, porosity, and responsiveness to external stimuli, thereby enhancing their overall performance compared to their individual constituents. The versatile advantages of SMCHs extend their applications to fields such as targeted drug delivery, tissue engineering, and regenerative medicine. This review offers a comprehensive overview of the key design principles and the physical strategies used to transform supramolecular hydrogels (SMHs) into SMCHs. Furthermore, it highlights recent advances in their biomedical applications, including 3D cell culture, antibacterial properties, anti-inflammatory effects, wound healing, cancer therapy, treatment of ocular infections, dental tissue repair, gastric tissue repair, cardiac tissue regeneration, bone regeneration, and disk repair, is systematically highlighted. We aim to provide innovative perspectives and critical insights into the design and development of SMCHs while addressing their current limitations and challenges, with the goal of advancing their practical applications","PeriodicalId":411,"journal":{"name":"Progress in Materials Science","volume":"4 1","pages":""},"PeriodicalIF":37.4,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142940652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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