Journal of Materials Research最新文献_第5页

Five-for-five: Highlights from five recent noteworthy papers on ionogels 五选五：离子凝胶方面近期五篇值得关注的论文集锦

IF 2.7 4区材料科学

Journal of Materials Research Pub Date : 2024-07-31 DOI: 10.1557/s43578-024-01397-3

Meixiang Wang, Michael D. Dickey

引用次数: 0

Investigating the structural, electrical, and magnetic characteristics of Nd-doped BiFeO3 synthesized via the solid-state reaction method 研究固态反应法合成的掺钕 BiFeO3 的结构、电学和磁学特性

IF 2.7 4区材料科学

Journal of Materials Research Pub Date : 2024-07-26 DOI: 10.1557/s43578-024-01394-6

Monika Lohchab, Sunil Rohilla, S. K. Chaudhary, Jyoti Saini

{"title":"Investigating the structural, electrical, and magnetic characteristics of Nd-doped BiFeO3 synthesized via the solid-state reaction method","authors":"Monika Lohchab, Sunil Rohilla, S. K. Chaudhary, Jyoti Saini","doi":"10.1557/s43578-024-01394-6","DOIUrl":"https://doi.org/10.1557/s43578-024-01394-6","url":null,"abstract":"In present work polycrystalline Bi1−xNdxFeO3 (X = 0.05 to 0.20 at step of 0.05) is synthesized by solid-state reaction method. Present study focuses on effect of temperature, frequency and concentration of Neodymium on BiFeO3 structural, dielectric, magnetic and ferroelectric properties. Crystalline nature of samples confirmed by XRD. Rietveld refinement of XRD data for Bi1−xNdxFeO3 shows structural transition for X = 0.20. Dielectric study shows very high value of dielectric constant i.e. (105) and shows improvement in values of dielectric constant with increasing Nd amount and observed very low value (less than 20) for dielectric loss for all the samples. Magnetic study shows low value for Retentivity and maximum for X = 0.15 (0.0386emu/gm). Performed ferroelectric analysis shows that Pr has declining nature with increasing Nd concentration for all frequencies and minimum value of Pr is obtained for X = 0.15. All the properties like dielectric, magnetic and ferroelectric shows a transition in regular trend for X = 0.20.<h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"44 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of empirical models for estimation polymer indentation fatigue and validation with finite element simulation models 开发用于估算聚合物压痕疲劳的经验模型，并用有限元模拟模型进行验证

IF 2.7 4区材料科学

Journal of Materials Research Pub Date : 2024-07-25 DOI: 10.1557/s43578-024-01399-1

Soumya Ranjan Guru, Mihir Sarangi

{"title":"Development of empirical models for estimation polymer indentation fatigue and validation with finite element simulation models","authors":"Soumya Ranjan Guru, Mihir Sarangi","doi":"10.1557/s43578-024-01399-1","DOIUrl":"https://doi.org/10.1557/s43578-024-01399-1","url":null,"abstract":"Multi-cycle micro-indentation tests were conducted on three polymers: Poly-ether-ether-ketone (PEEK), Poly (methyl methacrylate) (PMMA), and Poly (tetra-fluoroethylene) (PTFE). The load–displacement curve obtained from the indentation technique was used to evaluate the mechanical properties of these polymers. This study employed multi-cyclic indentation to establish a polymer fatigue model utilizing the indentation load–displacement curve. Currently, researchers are investigating fatigue life studies using stress- and energy-based approaches. Two empirical models for each approach were developed using the least-square curve-fitting method in this study. A simulation model based on finite element analysis has been utilized to verify the accuracy of these fatigue models for Vickers indentation. During the validation process, both models had a maximum error value of 2% compared to the experimental data, indicating a strong agreement with the simulation results. The generated models can evaluate polymer fatigue using non-destructive methodology.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"11 4 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fluorescent cobalt ferrite nanoparticles for non-destructive magnetic particle testing 用于无损磁粉检测的荧光钴铁氧体纳米粒子

IF 2.7 4区材料科学

Journal of Materials Research Pub Date : 2024-07-22 DOI: 10.1557/s43578-024-01396-4

Z. Baharlouei, M. H. Enayati, S. M. Nahvi

{"title":"Fluorescent cobalt ferrite nanoparticles for non-destructive magnetic particle testing","authors":"Z. Baharlouei, M. H. Enayati, S. M. Nahvi","doi":"10.1557/s43578-024-01396-4","DOIUrl":"https://doi.org/10.1557/s43578-024-01396-4","url":null,"abstract":"Magnetic particle testing is one of the popular methods to detect very small surface or near-surface defects in engineering parts. Successful defect detection depends on the physical properties of the particles. This work aims to synthesize cobalt ferrite-fluorescent polymer particles to detect finer defects located in deeper places. For this purpose, cobalt ferrite (CoFe2O4) nanoparticles were synthesized and the next step, fluorescence pigment was incorporated into CoFe2O4 nanoparticles. X-ray diffraction (XRD), scanning electron microscopy (SEM), vibration magnetometer (VSM), and Fourier transform infrared spectroscope (FTIR) were used to examine the effects of various parameters. CoFe2O4 nanoparticles with a size of about 55 nm and suitable magnetic properties were chosen. The presence of pigment reduced the saturation magnetization to 25.17 emu/g, although this value is still within the suitable range. Finally, the stability of the pigment on CoFe2O4 nanoparticles in water was investigated, and synthesized nanocomposite was successfully used to reveal defects.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"63 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Emergence of multi-peak emission in CsBr-Cs4PbBr6-CsPbBr3 nanocrystals at room temperature 室温下 CsBr-Cs4PbBr6-CsPbBr3 纳米晶体中出现的多峰发射

IF 2.7 4区材料科学

Journal of Materials Research Pub Date : 2024-07-22 DOI: 10.1557/s43578-024-01372-y

Chandrima Goswami, Asha Bhardwaj

{"title":"Emergence of multi-peak emission in CsBr-Cs4PbBr6-CsPbBr3 nanocrystals at room temperature","authors":"Chandrima Goswami, Asha Bhardwaj","doi":"10.1557/s43578-024-01372-y","DOIUrl":"https://doi.org/10.1557/s43578-024-01372-y","url":null,"abstract":"Highly stable and bright emitting CsBr-Cs4PbBr6-CsPbBr3 perovskite nanocrystals were synthesized using chemical route. For nanocrystals formed at higher Cs:Pb (10:1) ratios, multiple peak emission was observed in the UV–visible region (325–550 nm), while at lower Cs:Pb ratios (5:1 to 2.5:1), narrow high-intensity peak (at 522 nm, the signature peak of CsPbBr3) along with a diminished broad multi-peak emission (325–500 nm) is observed. Blue-emitting nanocrystals were observed at higher Cs:Pb precursor (Pb deficient conditions) ratios. As concentration of Pb increases (Cs:Pb ratio decreases), contribution from broad emission decreases while green emitting 522 nm peak dominates. This broad emission is unique at room temperature for CsBr-Cs4PbBr6-CsPbBr3 mixture of nanocrystals, unlike the single peak narrow emission reported in literature so far for inorganic lead halide perovskites. It is worth mentioning that the CsBr-Cs4PbBr6-CsPbBr3 mixture of nanocrystals is highly stable and hence can be used for various optoelectronic applications.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"37 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of temperature and strain rate on the hot workability behaviour of Ni–25Cr–14W superalloy: An approach using processing map and constitutive equation 温度和应变率对 Ni-25Cr-14W 超合金热加工性能的影响：使用加工图和构成方程的方法

IF 2.7 4区材料科学

Journal of Materials Research Pub Date : 2024-07-22 DOI: 10.1557/s43578-024-01390-w

Ravi Ranjan Kumar, Randhir Kumar Singh, Varsha Florist, Namit Pai, C. R. Anoop, Debasis Tripathy, S. V. S. Narayana Murty

{"title":"Effect of temperature and strain rate on the hot workability behaviour of Ni–25Cr–14W superalloy: An approach using processing map and constitutive equation","authors":"Ravi Ranjan Kumar, Randhir Kumar Singh, Varsha Florist, Namit Pai, C. R. Anoop, Debasis Tripathy, S. V. S. Narayana Murty","doi":"10.1557/s43578-024-01390-w","DOIUrl":"https://doi.org/10.1557/s43578-024-01390-w","url":null,"abstract":"The hot workability of Ni–25Cr–14W alloy is studied through isothermal hot compression tests in the temperature (T) range of 1000–1200 °C and in the strain rates(ε̇) of 0.001–10 s−1 in a thermomechanical simulator. Flow stress data show stable flow curves at T > 1050 °C and ε̇ < 0.1 s−1. The values of flow stress decrease with increase in T or decrease in ε̇. Based on processing map, safe region for hot workability has been identified in the temperature range of 1000–1200 °C and ε̇ of 0.001–0.1 s−1 with maximum efficiency(η) of ~ 44% at 1175 °C and 0.001 s−1. Dynamic recrystallization has been identified as the softening mechanism operating in the material at high temperature and lower ε̇. Incomplete recrystallization of the microstructures was noted during multi-step forging by varying T or ε̇, indicating the importance of maintaining the same during industrial processing.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"70 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Diamond/graphene (carbon sp3-sp2) heterojunctions for neuromorphic device applications 用于神经形态器件应用的金刚石/石墨烯（碳 sp3-sp2）异质结

IF 2.7 4区材料科学

Journal of Materials Research Pub Date : 2024-07-17 DOI: 10.1557/s43578-024-01395-5

H. Iwane, G. Saito, S. Muto, K. Ueda

引用次数: 0

Fixed temperature polymerization during intermediate stage to synthesize highly crystallized g-C3N4 for photocatalytic hydrogen production 在中间阶段进行固定温度聚合，合成用于光催化制氢的高结晶 g-C3N4

IF 2.7 4区材料科学

Journal of Materials Research Pub Date : 2024-07-10 DOI: 10.1557/s43578-024-01388-4

Wenting Shen, Jiaxin Du, Xiangyu Mei, Su Liu, Fujian Liu, Yinsong Si

{"title":"Fixed temperature polymerization during intermediate stage to synthesize highly crystallized g-C3N4 for photocatalytic hydrogen production","authors":"Wenting Shen, Jiaxin Du, Xiangyu Mei, Su Liu, Fujian Liu, Yinsong Si","doi":"10.1557/s43578-024-01388-4","DOIUrl":"https://doi.org/10.1557/s43578-024-01388-4","url":null,"abstract":"Graphitic carbon nitride (g-C3N4), owing to its unique structure, has emerged as a hotspot in the semiconductor photocatalytic hydrogen production. However, the intrinsic poor crystallinity of g-C3N4, which leads to poor hydrogen production efficiency, remains a significant drawback. This study introduces a novel approach for synthesizing highly crystallized g-C3N4 by optimizing precursor mass and employing a fixed temperature polymerization technique. Our research focuses on the intermediate stage polymerization at 220 °C using varying masses of dicyandiamide (DCY) precursors. The results indicate that an increase in the mass of the DCY precursor leads to g-C3N4 with a more regular microstructure and enhanced crystallinity. The photocatalytic hydrogen production rate of this g-C3N4 reached up to 3779 μmol·h−1·g−1, which is five times that of the original g-C3N4.This research holds significant implications for improving the photocatalytic hydrogen production performance of intrinsic g-C3N4.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"1 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141587688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Argatroban- and copper-modified polymers with improved thromboresistance and antimicrobial properties 阿加曲班和铜改性聚合物具有更好的抗血栓和抗菌性能

IF 2.7 4区材料科学

Journal of Materials Research Pub Date : 2024-07-09 DOI: 10.1557/s43578-024-01389-3

Liana Azizova, Volodymyr Chernyshenko, Daria Korolova, Iain U. Allan, Sergey Mikhalovsky, Lyuba Mikhalovska

{"title":"Argatroban- and copper-modified polymers with improved thromboresistance and antimicrobial properties","authors":"Liana Azizova, Volodymyr Chernyshenko, Daria Korolova, Iain U. Allan, Sergey Mikhalovsky, Lyuba Mikhalovska","doi":"10.1557/s43578-024-01389-3","DOIUrl":"https://doi.org/10.1557/s43578-024-01389-3","url":null,"abstract":"This paper describes a novel approach the development of biocompatible polyvinyl chloride (PVC) and polyurethane (PU) polymers, modified with copper (II) ions followed by the immobilisation the thrombin inhibitor argatroban (AG) using dopamine chemistry. The surface loading of the immobilised AG was 6.06 µg cm−2 on PVC and 6.66 µg cm−2 on PU, confirmed by FTIR and inhibitor concentration measurements. Both AG/Cu-modified polymers produced NO by catalytically decomposing S-nitrosothiol, reaching NO levels in plasma of 0.59 × 10–10 (text{mol} , {text{cm}}^{-2} , {text{min}}^{-1}) for AG/Cu-PVC and 0.51 × 10–10 (text{mol} , {text{cm}}^{-2} , {text{min}}^{-1}) for AG/Cu-PU, matching endothelial cell-produced physiological levels. This modification improved the haemocompatibility of the polymers through thrombin inhibition and reduced platelet aggregation and adhesion. Additionally, both modified polymers inhibited Staphylococcus aureus adhesion, growth and viability, confirming their acquired antibacterial properties. Antibacterial activity against Escherichia coli was also observed. These results demonstrate that modifying PVC and PU surfaces with copper (II) and AG produced materials with dual antithrombotic and antibacterial functions.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"23 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141569982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of nanoparticle doped hydroxyapatite-based composite scaffolds for maxillofacial reconstruction 开发用于颌面部重建的纳米颗粒掺杂羟基磷灰石复合支架

IF 2.7 4区材料科学

Journal of Materials Research Pub Date : 2024-07-09 DOI: 10.1557/s43578-024-01380-y

Mohammad Raziul Haque, Md Masud Rana, Naznin Akhtar, Mohammad Shahedur Rahman, S. M. Asaduzzaman

{"title":"Development of nanoparticle doped hydroxyapatite-based composite scaffolds for maxillofacial reconstruction","authors":"Mohammad Raziul Haque, Md Masud Rana, Naznin Akhtar, Mohammad Shahedur Rahman, S. M. Asaduzzaman","doi":"10.1557/s43578-024-01380-y","DOIUrl":"https://doi.org/10.1557/s43578-024-01380-y","url":null,"abstract":"Hydroxyapatite is widely used as a biomaterial filler to promote maxillofacial bone regeneration. Bacterial infections pose a common challenge to maxillofacial bone tissue regeneration; thus, incorporating antibacterial properties into hydroxyapatite-based scaffolds is essential. This study aimed to develop composite scaffolds for maxillofacial reconstruction by incorporating silver and iron nanoparticles into hydroxyapatite-polymer composites. A thermally induced phase separation method was employed to fabricate scaffolds with hydroxyapatite, collagen, and chitosan. Various characterization techniques, including porosity and density measurements, swelling ability analysis, biodegradability, FTIR, XRD, and SEM analysis, were utilized. The incorporation of silver and iron nanoparticles enhanced antibacterial properties and promoted bone growth. The scaffolds demonstrated efficacy against bacteria in antimicrobial assays. Cytotoxicity and blood biocompatibility analysis confirmed their compatibility with cells, and in vivo studies in a rabbit mandibular defect model demonstrated successful bone restoration. These findings may have significant implications for craniofacial tissue regeneration, particularly in non-load-bearing bone defects.<h3 data-test=\"abstract-sub-heading\">Graphical abstract</h3>\u0000","PeriodicalId":16306,"journal":{"name":"Journal of Materials Research","volume":"83 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141569986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0