Lei Gao, Yi-dong Wu, Jing-yang Chen, Cheng-bo Xiao, Ning An, Xu-li Liu, Xi-dong Hui
Ni-Based Superalloys
By analyzing numerous alloy compositions through high-throughput thermodynamic calculations and screening them with the multi-performance-oriented criterion, which includes quantitative weldability assessment indices, volume fraction of γ′, electron vacancy number, density, solidus temperature, and freezing range, in article number 2400687, Yi-dong Wu, Xi-dong Hui, and co-workers successfully identify a superalloy with excellent solidification crack resistance and temperature-bearing capacity up to 800°C.
{"title":"Novel Cast Ni-Based Superalloys with Superb Weldability and Mechanical Properties Screened by a Multiperformance-Oriented Criterion","authors":"Lei Gao, Yi-dong Wu, Jing-yang Chen, Cheng-bo Xiao, Ning An, Xu-li Liu, Xi-dong Hui","doi":"10.1002/adem.202470037","DOIUrl":"https://doi.org/10.1002/adem.202470037","url":null,"abstract":"<p><b>Ni-Based Superalloys</b>\u0000 </p><p>By analyzing numerous alloy compositions through high-throughput thermodynamic calculations and screening them with the multi-performance-oriented criterion, which includes quantitative weldability assessment indices, volume fraction of γ′, electron vacancy number, density, solidus temperature, and freezing range, in article number 2400687, Yi-dong Wu, Xi-dong Hui, and co-workers successfully identify a superalloy with excellent solidification crack resistance and temperature-bearing capacity up to 800°C.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202470037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142041687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In article number 2400340, Yuancheng Fan, Fuli Zhang, and co-workers present a hybrid metasurface made of a membrane-type acoustic metasurface and an acoustic cavity, which is promising for spectral modulation. The coupling of the local resonant mode of the membrane metasurface and the F-P mode of cavity shows a Rabi-splitting-like response. The splitting mechanism would be interesting in designing multi-band acoustic wave-functional devices.
{"title":"Rabi-Like Splitting in Acoustic Cavity Coupled with Membrane-Type Metasurface","authors":"Kangyao Sun, Yuancheng Fan, Shuang Chen, Zhehao Ye, Zhichen Li, Qianyi Zhang, Quanhong Fu, Yali Zeng, Fuli Zhang","doi":"10.1002/adem.202470038","DOIUrl":"https://doi.org/10.1002/adem.202470038","url":null,"abstract":"<p><b>Rabi-Like Splitting</b>\u0000 </p><p>In article number 2400340, Yuancheng Fan, Fuli Zhang, and co-workers present a hybrid metasurface made of a membrane-type acoustic metasurface and an acoustic cavity, which is promising for spectral modulation. The coupling of the local resonant mode of the membrane metasurface and the F-P mode of cavity shows a Rabi-splitting-like response. The splitting mechanism would be interesting in designing multi-band acoustic wave-functional devices.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202470038","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142041688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kun Luo, Xiao Han, Jonathan Cappola, Dian Li, Yufeng Zheng, Lin Li, Feng Yan, Qi An
Hyper-Elastic Deformation
In article number 2302076, Lin Li, Feng Yan, Qi An, and co-workers show that superelastic deformation behavior, induced by martensitic transformations in CdTe materials, markedly enhances their deformability, demonstrating an excess of 36% hyper-elastic strain. This feature enables the panels to sustain structural integrity across varied configurations and stress conditions, potentially mitigating damage risks and enhancing durability in diverse installation environments, thus expanding the practical application spectrum of CdTe solar technology.
超弹性变形 在编号为 2302076 的文章中，Lin Li、Feng Yan、Qi An 及合作者展示了由碲化镉材料中的马氏体转变诱发的超弹性变形行为，这种行为显著增强了碲化镉材料的可变形性，显示出超过 36% 的超弹性应变。这一特性使电池板能够在不同的配置和应力条件下保持结构完整性，从而有可能在不同的安装环境中降低损坏风险并提高耐用性，从而扩大碲化镉太阳能技术的实际应用范围。
{"title":"Hyper-Elastic Deformation via Martensitic Phase Transformation in Cadmium Telluride","authors":"Kun Luo, Xiao Han, Jonathan Cappola, Dian Li, Yufeng Zheng, Lin Li, Feng Yan, Qi An","doi":"10.1002/adem.202470036","DOIUrl":"https://doi.org/10.1002/adem.202470036","url":null,"abstract":"<p><b>Hyper-Elastic Deformation</b>\u0000 </p><p>In article number 2302076, Lin Li, Feng Yan, Qi An, and co-workers show that superelastic deformation behavior, induced by martensitic transformations in CdTe materials, markedly enhances their deformability, demonstrating an excess of 36% hyper-elastic strain. This feature enables the panels to sustain structural integrity across varied configurations and stress conditions, potentially mitigating damage risks and enhancing durability in diverse installation environments, thus expanding the practical application spectrum of CdTe solar technology.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202470036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142041686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Friction reduction is important from the viewpoint of energy problems and other issues. Frictional forces are known to vary depending on the material property, surface texture, and measurement scale. However, the effect of submicron-sized moth-eye structures prepared of robust plastic deformation materials on dry friction under high-load conditions has not been investigated in detail. To investigate this, a copper moth-eye structure is fabricated via electroforming for experimental measurements. Results from the friction tests reveal that real contact area increase is suppressed, as the friction coefficient of the moth-eye structure decreases exponentially with increasing load. Further friction simulation demonstrates nanoscale contact between the structure's tip and indenter, indicating that the real contact area increase requires deformation of the moth-eye structure itself (microcontact). However, the contact pressure on the surface is reduced by dispersing the load to the sides and bottom of the moth-eye structure. Therefore, the suppression of real contact area increase can be attributed to the deformation suppression facilitated by load dispersion. These findings expand the possibilities for friction design with surface textures because they reveal the role of robustness due to submicron-scale surface microstructure in reducing friction between plastic deformation materials.
{"title":"Friction Reduction Effect Caused by Microcontact and Load Dispersion on the Moth-Eye Structure","authors":"Kazuma Tsujioka, Akari Koda, Yuji Hirai, Masatsugu Shimomura, Yasutaka Matsuo","doi":"10.1002/adem.202401405","DOIUrl":"https://doi.org/10.1002/adem.202401405","url":null,"abstract":"Friction reduction is important from the viewpoint of energy problems and other issues. Frictional forces are known to vary depending on the material property, surface texture, and measurement scale. However, the effect of submicron-sized moth-eye structures prepared of robust plastic deformation materials on dry friction under high-load conditions has not been investigated in detail. To investigate this, a copper moth-eye structure is fabricated via electroforming for experimental measurements. Results from the friction tests reveal that real contact area increase is suppressed, as the friction coefficient of the moth-eye structure decreases exponentially with increasing load. Further friction simulation demonstrates nanoscale contact between the structure's tip and indenter, indicating that the real contact area increase requires deformation of the moth-eye structure itself (microcontact). However, the contact pressure on the surface is reduced by dispersing the load to the sides and bottom of the moth-eye structure. Therefore, the suppression of real contact area increase can be attributed to the deformation suppression facilitated by load dispersion. These findings expand the possibilities for friction design with surface textures because they reveal the role of robustness due to submicron-scale surface microstructure in reducing friction between plastic deformation materials.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141930810","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}
Surface functionality plays a pivotal role in Tribology, a discipline dedicated to examining the interactions of surfaces in relative motion. The approach, known as Tribotronics, combines Tribology and electronics, enabling active tribological components to be embedded in larger systems and networks constituting the Industrial Internet of Things. Leveraging novel technologies such as advanced sensing coatings and triboelectric nanogenerators, the sensing capability of Tribotronic systems undergoes a transformative shift from a device-centric to a surface-centric paradigm. This critical advancement unlocks the potential for direct interface probing and in-situ measurement of tribological processes, marking a significant milestone in the field. This emerging trend introduces the concept of the Internet of Surfaces, a novel perspective within surface engineering. It entails the amalgamation of sensing capabilities, embedded power generation, and external analytics, creating dynamic materials in the context of Industry 4.0.
{"title":"Advancing Surface Engineering for Tribology: From Functionality to Connectivity","authors":"Tomasz Liskiewicz","doi":"10.1002/adem.202400303","DOIUrl":"https://doi.org/10.1002/adem.202400303","url":null,"abstract":"Surface functionality plays a pivotal role in Tribology, a discipline dedicated to examining the interactions of surfaces in relative motion. The approach, known as Tribotronics, combines Tribology and electronics, enabling active tribological components to be embedded in larger systems and networks constituting the Industrial Internet of Things. Leveraging novel technologies such as advanced sensing coatings and triboelectric nanogenerators, the sensing capability of Tribotronic systems undergoes a transformative shift from a device-centric to a surface-centric paradigm. This critical advancement unlocks the potential for direct interface probing and in-situ measurement of tribological processes, marking a significant milestone in the field. This emerging trend introduces the concept of the Internet of Surfaces, a novel perspective within surface engineering. It entails the amalgamation of sensing capabilities, embedded power generation, and external analytics, creating dynamic materials in the context of Industry 4.0.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141930811","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}
Sascha Fliegener, Johannes Rosenberger, Michael Luke, José Manuel Domínguez, Joana Francisco Morgado, H. Kobialka, Torsten Kraft, Johannes Tlatlik
Engineering steels are used for a wide range of applications in which their fatigue behavior is a crucial design factor. The fatigue properties depend on various influencing factors such as chemical composition, heat treatment, surface properties, load parameters, microstructure, and others. During product development, various material characterization and qualification experiments are mandatory. For a faster and more cost‐efficient development, data driven methods (machine learning) promise to replace or to complement material testing by prediction of the fatigue strength. With an ontology‐based, semantically‐linked knowledge graph, representing the manufacturing history of the material, the influence of the parameters of the process chain on the resulting properties can be accounted for. Herein, it is shown how a fatigue database containing a wide range of materials is assembled from literature. After postprocessing and curation of the data, machine learning predictions of mechanical properties are discussed under multiple aspects. A domain ontology is defined, containing the relevant class definitions for the use case. After applying a data integration and mapping workflow, it is shown how the data can be systematically queried using knowledge graphs describing the manufacturing history of the materials.
{"title":"Digital Methods for the Fatigue Assessment of Engineering Steels","authors":"Sascha Fliegener, Johannes Rosenberger, Michael Luke, José Manuel Domínguez, Joana Francisco Morgado, H. Kobialka, Torsten Kraft, Johannes Tlatlik","doi":"10.1002/adem.202400992","DOIUrl":"https://doi.org/10.1002/adem.202400992","url":null,"abstract":"Engineering steels are used for a wide range of applications in which their fatigue behavior is a crucial design factor. The fatigue properties depend on various influencing factors such as chemical composition, heat treatment, surface properties, load parameters, microstructure, and others. During product development, various material characterization and qualification experiments are mandatory. For a faster and more cost‐efficient development, data driven methods (machine learning) promise to replace or to complement material testing by prediction of the fatigue strength. With an ontology‐based, semantically‐linked knowledge graph, representing the manufacturing history of the material, the influence of the parameters of the process chain on the resulting properties can be accounted for. Herein, it is shown how a fatigue database containing a wide range of materials is assembled from literature. After postprocessing and curation of the data, machine learning predictions of mechanical properties are discussed under multiple aspects. A domain ontology is defined, containing the relevant class definitions for the use case. After applying a data integration and mapping workflow, it is shown how the data can be systematically queried using knowledge graphs describing the manufacturing history of the materials.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141920821","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}
Su‐Ji Jin, Jungho Shin, Jong‐Won Bang, Yoon‐Jun Kim, Hyun‐Do Jung, Moon‐Jo Kim
The efficient processing of hypereutectic Al–Si alloys depends on controlling the microstructure of the primary Si phase during solidification. This study investigates the effects of electric current and phosphorus (P) addition on the refinement of primary Si, with the results confirming that applying electric current during solidification refines the primary Si phase; introducing P further enhances this refinement. Notably, when 10 ppm of P is added (below the identified critical amount of 20 ppm), an improved refinement effect is observed compared with the application of either electric current or P alone. Applying an electric current generates a circulating flow within the melt, resulting in an increased cooling rate, which leads to improved nucleation behavior for the primary Si phase. In addition, the circulating flow generated within the melt influences the dispersion of aluminum phosphide during nucleation. Adding P at concentrations above 40 ppm does not yield further benefits, suggesting a saturation point for its efficacy. This study demonstrates that the concurrent electric current application and minimal P addition can significantly enhance the refinement of primary Si phases, offering a potent approach for optimizing the microstructural properties of hypereutectic Al–Si alloys.
{"title":"Refinement of Primary Si Phase in Hypereutectic Al–Si Alloy by Electrically Assisted Solidification with P Addition","authors":"Su‐Ji Jin, Jungho Shin, Jong‐Won Bang, Yoon‐Jun Kim, Hyun‐Do Jung, Moon‐Jo Kim","doi":"10.1002/adem.202401025","DOIUrl":"https://doi.org/10.1002/adem.202401025","url":null,"abstract":"The efficient processing of hypereutectic Al–Si alloys depends on controlling the microstructure of the primary Si phase during solidification. This study investigates the effects of electric current and phosphorus (P) addition on the refinement of primary Si, with the results confirming that applying electric current during solidification refines the primary Si phase; introducing P further enhances this refinement. Notably, when 10 ppm of P is added (below the identified critical amount of 20 ppm), an improved refinement effect is observed compared with the application of either electric current or P alone. Applying an electric current generates a circulating flow within the melt, resulting in an increased cooling rate, which leads to improved nucleation behavior for the primary Si phase. In addition, the circulating flow generated within the melt influences the dispersion of aluminum phosphide during nucleation. Adding P at concentrations above 40 ppm does not yield further benefits, suggesting a saturation point for its efficacy. This study demonstrates that the concurrent electric current application and minimal P addition can significantly enhance the refinement of primary Si phases, offering a potent approach for optimizing the microstructural properties of hypereutectic Al–Si alloys.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141920718","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}
In article number 2301001, Mahiro Sawada and Shinsuke Suzuki develop a method to predict the location of macroscopic deformation bands that occur in directional porous metals under compressive load. The prediction utilizes the concept of path search on a map that was created based on the equivalent plastic strain distribution at the compressive strain of 1.0%.
{"title":"Prediction of Macroscopic Deformation Bands in Porous Metals with Unidirectional Through-Pores","authors":"Mahiro Sawada, Shinsuke Suzuki","doi":"10.1002/adem.202470034","DOIUrl":"https://doi.org/10.1002/adem.202470034","url":null,"abstract":"<p><b>Macroscopic Deformation Bands</b>\u0000 </p><p>In article number 2301001, Mahiro Sawada and Shinsuke Suzuki develop a method to predict the location of macroscopic deformation bands that occur in directional porous metals under compressive load. The prediction utilizes the concept of path search on a map that was created based on the equivalent plastic strain distribution at the compressive strain of 1.0%.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202470034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141967754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The 7th International Conference on Cellular Materials, CELLMAT 2022, was held from October 12 to 14, 2022, in Dresden. The CELLMAT conference was initiated as CELLMET in 2005 and has been organized biennially by the Deutsche Gesellschaft für Materialkunde e.V. (DGM) since 2010 under the name CELLMAT. The CELLMAT conference is a materials science conference focused on the research and development of and with cellular structured materials. All material classes are considered, from polymers to ceramic materials, metals, natural materials, and composites. The conference equally addresses both fundamental research and applied research. Additionally, it is a tradition that contributions from industry showcase developments up to series production. Due to this wide range of material classes and technology readiness levels, interdisciplinary dialogue plays a crucial role in the conference.
Cellular materials are an established field of research, often driven by applications. Manufacturing issues traditionally play a significant role in such established topics. New manufacturing processes frequently create cellular structures, and the question of the industrial usability of these techniques remains a key concern for the community. The boundaries between traditional material classes often blur, as manufacturing processes can be applied to a wide variety of materials. This trend is exemplified by the ongoing use of additive manufacturing methods, particularly in the production of highly porous materials. Lately, the rapid development of additive manufacturing methods has proved to be a particular innovation driver for this research field. Adapting cellular structures to application-specific conditions and requirements is a relevant issue. Finally, application-related interests have led to further advancements. Driven by biomedical, thermal, or catalytic applications, as well as questions of energy conversion and storage, a high diversity of fabrication techniques and a deep level of application-related understanding have emerged.
The contributions published in this special section are selected works presented during the CELLMAT conference, highlighting the advancements in eco-friendly and sustainable techniques in the field of cellular materials. Amazon-Arranz et al. explore novel synthesis methods for bio-based, eco-friendly bulk materials for natural rubber latex foams. In the realm of elastomers, Marl et al. focus on new water-based blowing agents for liquid silicone rubber, emphasizing questions of reliable production to ensure the availability of these materials.
Simulation is another crucial area covered in this section, with two notable contributions. Sawad et al. conduct finite element simulations of materials with unidirectional through pores, particularly demonstrating the geometric effects of the L/D ratio on deformation bands during plastic deformation. Oikonomou et al. present an innovative approach to simulate heterogeneou
{"title":"Editorial on the Special Section of CELLMAT 2022","authors":"","doi":"10.1002/adem.202401272","DOIUrl":"10.1002/adem.202401272","url":null,"abstract":"<p>The 7th International Conference on Cellular Materials, CELLMAT 2022, was held from October 12 to 14, 2022, in Dresden. The CELLMAT conference was initiated as CELLMET in 2005 and has been organized biennially by the Deutsche Gesellschaft für Materialkunde e.V. (DGM) since 2010 under the name CELLMAT. The CELLMAT conference is a materials science conference focused on the research and development of and with cellular structured materials. All material classes are considered, from polymers to ceramic materials, metals, natural materials, and composites. The conference equally addresses both fundamental research and applied research. Additionally, it is a tradition that contributions from industry showcase developments up to series production. Due to this wide range of material classes and technology readiness levels, interdisciplinary dialogue plays a crucial role in the conference.</p><p>Cellular materials are an established field of research, often driven by applications. Manufacturing issues traditionally play a significant role in such established topics. New manufacturing processes frequently create cellular structures, and the question of the industrial usability of these techniques remains a key concern for the community. The boundaries between traditional material classes often blur, as manufacturing processes can be applied to a wide variety of materials. This trend is exemplified by the ongoing use of additive manufacturing methods, particularly in the production of highly porous materials. Lately, the rapid development of additive manufacturing methods has proved to be a particular innovation driver for this research field. Adapting cellular structures to application-specific conditions and requirements is a relevant issue. Finally, application-related interests have led to further advancements. Driven by biomedical, thermal, or catalytic applications, as well as questions of energy conversion and storage, a high diversity of fabrication techniques and a deep level of application-related understanding have emerged.</p><p>The contributions published in this special section are selected works presented during the CELLMAT conference, highlighting the advancements in eco-friendly and sustainable techniques in the field of cellular materials. Amazon-Arranz et al. explore novel synthesis methods for bio-based, eco-friendly bulk materials for natural rubber latex foams. In the realm of elastomers, Marl et al. focus on new water-based blowing agents for liquid silicone rubber, emphasizing questions of reliable production to ensure the availability of these materials.</p><p>Simulation is another crucial area covered in this section, with two notable contributions. Sawad et al. conduct finite element simulations of materials with unidirectional through pores, particularly demonstrating the geometric effects of the L/D ratio on deformation bands during plastic deformation. Oikonomou et al. present an innovative approach to simulate heterogeneou","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/adem.202401272","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141930812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Two‐dimensional (2D) piezoelectric hexagonal boron nitride nanoflakes (h‐BN NFs) exhibit substantial potential for energy harvesting, electronics, and optoelectronics applications. Herein, a free‐standing PVDF/h‐BN NFs (Ph‐BN) composite film is synthesized for multi‐functional purposes. First and foremost, a piezoelectric nanogenerator (PENG) device is fabricated using free‐standing Ph‐BN composite films and the energy harvesting properties are performed. The nanogenerator, Ph‐BN‐7.5 PENG, exhibits the highest output voltage of 50 V and current of 250 nA with a maximum power of about 2 μW compared to other fabricated composite devices. Further, a photo power cell (PPC) is fabricated using PVA‐EY mixture dye as the photosensitive part or solar energy absorber, and Ph‐BN 7.5 film is utilized as the energy storage part. The PPC is self‐charged up to ≈1 V within 80 s under light illumination. The self‐charging mechanism for PPC is explained in detail. The Ph‐BN composite films demonstrate an innovative energy harvesting and storage approach, which can fulfill the energy prerequisite in the imminent future.
{"title":"High‐Performance Piezoelectric Nanogenerator and Self‐Charging Photo Power Cell Using Hexagonal Boron Nitride Nanoflakes and PVDF Composite","authors":"Surjit Sahoo, Vishal Natraj, Rajavarman Swaminathan, Parthiban Pazhamalai, Karthikeyan Krishnamoorthy, Sang‐Jae Kim","doi":"10.1002/adem.202400658","DOIUrl":"https://doi.org/10.1002/adem.202400658","url":null,"abstract":"Two‐dimensional (2D) piezoelectric hexagonal boron nitride nanoflakes (h‐BN NFs) exhibit substantial potential for energy harvesting, electronics, and optoelectronics applications. Herein, a free‐standing PVDF/h‐BN NFs (Ph‐BN) composite film is synthesized for multi‐functional purposes. First and foremost, a piezoelectric nanogenerator (PENG) device is fabricated using free‐standing Ph‐BN composite films and the energy harvesting properties are performed. The nanogenerator, Ph‐BN‐7.5 PENG, exhibits the highest output voltage of 50 V and current of 250 nA with a maximum power of about 2 μW compared to other fabricated composite devices. Further, a photo power cell (PPC) is fabricated using PVA‐EY mixture dye as the photosensitive part or solar energy absorber, and Ph‐BN 7.5 film is utilized as the energy storage part. The PPC is self‐charged up to ≈1 V within 80 s under light illumination. The self‐charging mechanism for PPC is explained in detail. The Ph‐BN composite films demonstrate an innovative energy harvesting and storage approach, which can fulfill the energy prerequisite in the imminent future.","PeriodicalId":7275,"journal":{"name":"Advanced Engineering Materials","volume":null,"pages":null},"PeriodicalIF":3.6,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141930829","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}
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