Superlattices and Microstructures最新文献

Temperature dependence of dielectric nonlinearity of BaTiO₃ ceramics BaTiO3陶瓷介电非线性的温度依赖性

3区物理与天体物理

Superlattices and Microstructures Pub Date : 2023-11-15 DOI: 10.20517/microstructures.2023.43

Ichiro Fujii, Susan Trolier-McKinstry

引用次数: 0

Influence of hydrogel and porous scaffold on the magnetic thermal property and anticancer effect of Fe₃O₄ nanoparticles 水凝胶和多孔支架对Fe3O4纳米颗粒磁性热性能和抗癌效果的影响

3区物理与天体物理

Superlattices and Microstructures Pub Date : 2023-11-06 DOI: 10.20517/microstructures.2023.46

Man Wang, Rui Sun, Huajian Chen, Xiaohan Liu, Toru Yoshitomi, Masaki Takeguchi, Naoki Kawazoe, Yingnan Yang, Guoping Chen

{"title":"Influence of hydrogel and porous scaffold on the magnetic thermal property and anticancer effect of Fe3O4 nanoparticles","authors":"Man Wang, Rui Sun, Huajian Chen, Xiaohan Liu, Toru Yoshitomi, Masaki Takeguchi, Naoki Kawazoe, Yingnan Yang, Guoping Chen","doi":"10.20517/microstructures.2023.46","DOIUrl":"https://doi.org/10.20517/microstructures.2023.46","url":null,"abstract":"Magnetic hyperthermia uses magnetic nanoparticles (MNPs) for conversion of magnetic energy into thermal energy under an alternating magnetic field (AMF) to increase local temperature for ablation of cancer cells. The magnetic thermal capacity of MNPs not only depends on the intrinsic properties of MNPs but is also affected by the microenvironmental matrices surrounding the MNPs. In this study, the influence of agarose hydrogels and gelatin porous scaffolds on the magnetic thermal property and anticancer effect of Fe3O4 nanoparticles (NPs) were investigated with a comparison to free Fe3O4 NPs. Flower-like Fe3O4 NPs were synthesized and embedded in agarose hydrogels and gelatin porous scaffolds. Under AMF irradiation, the free Fe3O4 NPs had the best magnetic thermal properties and the most efficiently increased the local temperature to ablate breast cancer cells. However, the Fe3O4 NPs embedded in agarose hydrogels and gelatin porous scaffolds showed reduced magnetic-thermal conversion capacity, and the local temperature change was decreased in comparison to free Fe3O4 NPs during AMF irradiation. The gelatin porous scaffolds showed a higher inhibitory influence than the agarose hydrogels. The inhibitory effect of agarose hydrogels and gelatin porous scaffolds on magnetic-thermal conversion capacity resulted in a decreased anticancer ablation capacity to breast cancer cells during AMF irradiation. The Fe3O4 NP-embedded gelatin scaffolds showed the lowest anticancer effect. The results suggested that the matrices used to deliver MNPs could affect their performance, and appropriate matrices should be designed to maximize their therapeutic effect for biomedical applications.","PeriodicalId":22044,"journal":{"name":"Superlattices and Microstructures","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135584774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetic structures and correlated physical properties in antiperovskites 反钙钛矿的磁性结构及相关物理性质

3区物理与天体物理

Superlattices and Microstructures Pub Date : 2023-11-06 DOI: 10.20517/microstructures.2023.42

Sihao Deng, Hongde Wang, Lunhua He, Cong Wang

{"title":"Magnetic structures and correlated physical properties in antiperovskites","authors":"Sihao Deng, Hongde Wang, Lunhua He, Cong Wang","doi":"10.20517/microstructures.2023.42","DOIUrl":"https://doi.org/10.20517/microstructures.2023.42","url":null,"abstract":"Compounds with perovskite structures have become one of the focuses in both materials science and condensed matter physics because of their fascinating physical properties and potential functionalities correlated to magnetic structures. However, the understanding of the intriguing physical properties is still at an exploratory stage. Herein, owing to the magnetic frustration prompted by Mn6N or Mn6C octahedra, the abounding magnetic structures of antiperovskites, including collinear antiferromagnetic, collinear ferromagnetic, collinear ferrimagnetic, non-collinear magnetic, and non-coplanar magnetic spin configurations, are systematically introduced through the updated coverage. In addition, owing to the “spin-lattice-charge” coupling of antiperovskites, a large number of physical properties, such as anomalous thermal expansion, giant magnetoresistance, anomalous Hall effect, piezomagnetic/baromagnetic effects, magnetocaloric effect, barocaloric effect, etc ., are summarized by combining the discussions of the determined magnetic structures. This review aims to clarify the current research progress in this field, focusing on the relationship between the magnetic structures and the correlated physical properties, and provides the conclusion and outlook on further performance optimization and mechanism exploration in antiperovskites.","PeriodicalId":22044,"journal":{"name":"Superlattices and Microstructures","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135634010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cryogenic atom probe tomography and its applications: a review 低温原子探针层析成像及其应用综述

3区物理与天体物理

Superlattices and Microstructures Pub Date : 2023-11-06 DOI: 10.20517/microstructures.2023.38

Ziyang Zhou, Zhengquan Wang, Ranming Niu, Pang-Yu Liu, Chao Huang, Yi-Hsuan Sun, Xiutong Wang, Hung-Wei Yen, Julie M. Cairney, Yi-Sheng Chen

引用次数: 0

Scanning transmission electron microscopy for advanced characterization of ferroic materials 用于铁材料高级表征的扫描透射电子显微镜

3区物理与天体物理

Superlattices and Microstructures Pub Date : 2023-10-16 DOI: 10.20517/microstructures.2023.39

Matthew J. Cabral, Zibin Chen, Xiaozhou Liao

{"title":"Scanning transmission electron microscopy for advanced characterization of ferroic materials","authors":"Matthew J. Cabral, Zibin Chen, Xiaozhou Liao","doi":"10.20517/microstructures.2023.39","DOIUrl":"https://doi.org/10.20517/microstructures.2023.39","url":null,"abstract":"Scanning Transmission electron microscopy (STEM) technologies have undergone significant advancements in the last two decades. Advancements in aberration-correction technology, ultra-high energy resolution monochromators, and state-of-the-art detectors/cameras have established STEM as an essential tool for investigating material chemistry and structure from the micro to the atomic scale. This characterization technique has been invaluable for understanding and characterizing the origins of ferroic material properties in next-generation advanced materials. Many unique properties of engineering materials, such as ferroelectricity, piezoelectricity, and ferromagnetism, are intricately linked to their atomic-scale composition and structure. STEM enables direct observation of these structural characteristics, establishing a link with macroscopic properties. In this perspective, we provide an overview of the application of advanced STEM techniques in investigating the origin of ferroic material properties, along with discussions on potential opportunities for further utilization of STEM techniques.","PeriodicalId":22044,"journal":{"name":"Superlattices and Microstructures","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136114412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving orientation mapping by enhancing the diffraction signal using Auto-CLAHE in precession electron diffraction data 利用Auto-CLAHE增强进动电子衍射数据中的衍射信号，改善了取向映射

3区物理与天体物理

Superlattices and Microstructures Pub Date : 2023-10-03 DOI: 10.20517/microstructures.2023.27

Ainiu L. Wang, Marcus H. Hansen, Yi-Cheng Lai, Jiaqi Dong, Kelvin Y. Xie

{"title":"Improving orientation mapping by enhancing the diffraction signal using Auto-CLAHE in precession electron diffraction data","authors":"Ainiu L. Wang, Marcus H. Hansen, Yi-Cheng Lai, Jiaqi Dong, Kelvin Y. Xie","doi":"10.20517/microstructures.2023.27","DOIUrl":"https://doi.org/10.20517/microstructures.2023.27","url":null,"abstract":"Precession electron diffraction (PED) is a powerful technique for revealing the crystallographic orientation of samples at the nanoscale. However, the quality of orientation indexing is strongly influenced by the quality of diffraction patterns. In this study, we have developed a novel algorithm called Auto-CLAHE (automatic contrast-limited adaptive histogram equalization), which automatically enhances low-intensity diffraction pattern signals using contrast-limited adaptive histogram equalization (CLAHE). The degree of enhancement is dynamically adjusted based on the overall intensity of the diffraction pattern, with greater enhancement applied to patterns with fewer spots (i.e., away from zone axes) and little or no enhancement applied to patterns with many spots (i.e., at a zone axis). By improving the visibility of low-intensity diffraction spots, Auto-CLAHE significantly improves the template matching between experimentally acquired and simulated diffraction patterns, leading to orientation maps with dramatically higher quality and lower noise. We anticipate that Auto-CLAHE provides an efficient and practical solution for preprocessing PED data, enabling higher-quality crystal orientation mapping to be routinely obtained.","PeriodicalId":22044,"journal":{"name":"Superlattices and Microstructures","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135648210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Investigation of BiFeO₃-BaTiO₃ lead-free piezoelectric ceramics with nonstoichiometric bismuth 含非化学计量铋BiFeO3-BaTiO3无铅压电陶瓷的研究

3区物理与天体物理

Superlattices and Microstructures Pub Date : 2023-09-19 DOI: 10.20517/microstructures.2023.34

Hailan Qin, Jianwei Zhao, Xiaoxin Chen, Hongtian Li, Shenghao Wang, Yuxiao Du, Huanfu Zhou, Peifeng Li, Dawei Wang

{"title":"Investigation of BiFeO3-BaTiO3 lead-free piezoelectric ceramics with nonstoichiometric bismuth","authors":"Hailan Qin, Jianwei Zhao, Xiaoxin Chen, Hongtian Li, Shenghao Wang, Yuxiao Du, Huanfu Zhou, Peifeng Li, Dawei Wang","doi":"10.20517/microstructures.2023.34","DOIUrl":"https://doi.org/10.20517/microstructures.2023.34","url":null,"abstract":"BiFeO3-BaTiO3 (BF-BT)-based lead-free ceramics are promising piezoelectric materials exhibiting high Curie temperatures and excellent electrochemical properties. In this study, 0.70Bi1+x FeO3-0.30BaTiO3 (B1+x F-BT, x = -0.01, 0.00, 0.01, 0.02, 0.03, 0.04) lead-free piezoelectric ceramics were successfully fabricated via the conventional solid-phase reaction process. Crystallographic structure, microstructure, dielectric, impedance, ferroelectric, and piezoelectric properties among different compositions were comprehensively investigated. The X-ray diffraction analysis confirmed that all compositions exhibited a typical perovskite structure with a cubic-rhombohedral phase mixture. The grain size of ceramics tends to increase as the Bi2O3 content rises. In particular, the backscattered electron images and energy dispersive analysis revealed prominent core-shell microstructure within grains. Notably, the BF-BT ceramic containing 1% excess Bi displayed the maximum d 33 ~217 pC/N and ~243 pm/V accompanied by a high Curie temperature of 515 °C. The findings demonstrate the potential feasibility of BF-BT ceramics in the field of lead-free piezoelectric ceramics.","PeriodicalId":22044,"journal":{"name":"Superlattices and Microstructures","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135011372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing the energy storage performance of NaNbO3 ceramics by rare-earth-based composite perovskite Sm(Mg0.5Zr0.5)O3 modification 稀土基复合钙钛矿Sm(Mg0.5Zr0.5)O3改性优化NaNbO3陶瓷储能性能

IF 3.1 3区物理与天体物理

Superlattices and Microstructures Pub Date : 2023-09-03 DOI: 10.20517/microstructures.2023.19

Mingzhao Xu, Dafu Zeng, Xiang Wang, Peng Nong, Yue Pan, Qinpeng Dong, Jiaming Wang, Huanfu Zhou, Xiuli Chen

{"title":"Optimizing the energy storage performance of NaNbO3 ceramics by rare-earth-based composite perovskite Sm(Mg0.5Zr0.5)O3 modification","authors":"Mingzhao Xu, Dafu Zeng, Xiang Wang, Peng Nong, Yue Pan, Qinpeng Dong, Jiaming Wang, Huanfu Zhou, Xiuli Chen","doi":"10.20517/microstructures.2023.19","DOIUrl":"https://doi.org/10.20517/microstructures.2023.19","url":null,"abstract":"Researchers often improve the energy storage performance of NaNbO3 ceramics through doping with Bi-based composites. Recent studies have shown that rare-earth elements, such as La and Sm, can suppress remanent polarization. In this study, a (1-x )NaNbO3-x Sm(Mg0.5Zr0.5)O3 ceramic system was designed. Doping with Sm(Mg0.5Zr0.5)O3 (SMZ) increases the resistance, activation energy, and bandgap of NaNbO3 ceramics, improves the breakdown field strength, and optimizes the energy storage efficiency of NaNbO3 ceramics. In this study, 0.92NaNbO3-0.08 SMZ achieved an energy storage density of 4.3/cm3 and an energy storage efficiency of 85.6% at 560 kV/cm. When x = 0.15, the sample exhibited an ultrahigh breakdown field strength and energy storage efficiency (720 kV/cm and 91%, respectively). In addition, the 0.08 SMZ sample had an ultrafast release rate of t 0.9 (57 ns), high current density (777.1 A/cm2), and high power density (69.93 MW/cm3). It has practical application prospects in high-performance energy storage capacitors.","PeriodicalId":22044,"journal":{"name":"Superlattices and Microstructures","volume":null,"pages":null},"PeriodicalIF":3.1,"publicationDate":"2023-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80550526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Machine learning assisted intelligent design of meta structures: a review 机器学习辅助元结构智能设计综述

IF 3.1 3区物理与天体物理

Superlattices and Microstructures Pub Date : 2023-08-25 DOI: 10.20517/microstructures.2023.29

Liangshu He, Yan Li, D. Torrent, X. Zhuang, T. Rabczuk, Y. Jin

引用次数: 1

The concept, structure, and progress of seawater metal-air batteries 海水金属-空气电池的概念、结构及进展

IF 3.1 3区物理与天体物理

Superlattices and Microstructures Pub Date : 2023-08-15 DOI: 10.20517/microstructures.2023.30

Yuanyuan Guo, Yanhui Cao, Junda Lu, Xuerong Zheng, Yida Deng

引用次数: 1