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Melt electrowriting of high-precision diamond-square bi-phasic scaffolds and influence on mechanical characteristics through path planning
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-02-03 DOI: 10.1016/j.matlet.2025.138175
Qing Ye , Yue Sun , Lei Du
{"title":"Melt electrowriting of high-precision diamond-square bi-phasic scaffolds and influence on mechanical characteristics through path planning","authors":"Qing Ye ,&nbsp;Yue Sun ,&nbsp;Lei Du","doi":"10.1016/j.matlet.2025.138175","DOIUrl":"10.1016/j.matlet.2025.138175","url":null,"abstract":"<div><div>Melt electrowriting (MEW) is an emerging extrusion-based additive manufacturing technique specifically designed for high-resolution scaffold printing. The diamond-square bi-phasic scaffolds are widely recognized as excellent structures for adjusting mechanical characteristics due to their unique geometry. However, preparing high-precision diamond-square bi-phasic scaffolds with complete interfacial mechanical characteristics remains challenging. In this study, it is found that the defects at bi-phasic interface will affect the mechanical behaviour of the scaffold, which could be addressed by adjusting the printed fiber path. In addition, turning loops eliminated the bridging phenomenon in the turning areas along the diamond edges and improved printing precision, resulting in the fabrication of high-quality diamond-square bi-phasic scaffolds. The design of this scaffold facilitates the advancement of functional and reproducible MEW scaffolds.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"385 ","pages":"Article 138175"},"PeriodicalIF":2.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143379135","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
Investigation into the tensile strength and water resistance of branched and fluorinated reinforced transparent PDMS
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-02-03 DOI: 10.1016/j.matlet.2025.138180
Yong Dong , Zhouping Sun , Yanyan Liu , Xingyou Tian , Wei Zhang , Hua Wang
{"title":"Investigation into the tensile strength and water resistance of branched and fluorinated reinforced transparent PDMS","authors":"Yong Dong ,&nbsp;Zhouping Sun ,&nbsp;Yanyan Liu ,&nbsp;Xingyou Tian ,&nbsp;Wei Zhang ,&nbsp;Hua Wang","doi":"10.1016/j.matlet.2025.138180","DOIUrl":"10.1016/j.matlet.2025.138180","url":null,"abstract":"<div><div>In this paper, transparent elastomers were prepared by increasing the degree of branching and introducing fluorinated structures, and their property changes were systematically investigated. The results showed that the mechanical strength and barrier capacity of the materials increased significantly as the degree of branching increased. In particular, the mechanical strength increased from 0.136 MPa (P300CS) to 1.848 MPa (PCTE<sub>3</sub>). With the introduction of fluorinated structures, the water vapor transmission rate decreased from 36.3 g/(m<sup>2</sup>·day) (P300CS) to 16.8 g/(m<sup>2</sup>·day) (PCTE<sub>3</sub>F<sub>c</sub>). Therefore, this material has a promising application in the field of electronic packaging.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"385 ","pages":"Article 138180"},"PeriodicalIF":2.7,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143263607","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
Preparation of nanocube PtRhIr nanozyme and its application in ultrasensitive lateral flow immunoassay
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-02-02 DOI: 10.1016/j.matlet.2025.138123
Ying Zhang , Bin Liu , Haibo Zhang
{"title":"Preparation of nanocube PtRhIr nanozyme and its application in ultrasensitive lateral flow immunoassay","authors":"Ying Zhang ,&nbsp;Bin Liu ,&nbsp;Haibo Zhang","doi":"10.1016/j.matlet.2025.138123","DOIUrl":"10.1016/j.matlet.2025.138123","url":null,"abstract":"<div><div>The sensitivity of lateral flow immunoassay (LFIA) should be enhanced for detecting low-abundance markers. This study introduces a one-step synthesis method for a cuboidal nanozyme containing Pt, Rh, and Ir (PtRhIr) with a rough surface. The PtRhIr nanozyme exhibited peroxidase-like activity and effectively catalyzed the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) in the presence of H<sub>2</sub>O<sub>2</sub> to generate a blue product. Enzyme kinetics revealed that the PtRhIr nanozyme has an affinity for the H<sub>2</sub>O<sub>2</sub> substrate (6.55 mM), which is comparable to that of horseradish peroxidase. When the PtRhIr-nanozyme-incorporated LFIA was used for detecting the model marker hCG, the sensitivity increased by 7.8-fold compared to that achieved using a conventional Au nanoparticles based LFIA, achieving a visible detection limit of 3.2 IU/L of hCG.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"385 ","pages":"Article 138123"},"PeriodicalIF":2.7,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350080","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
On the anomalous strain rate dependence of working hardening and fracture behavior of an ultra-high strength 1470 MPa dual phase steel
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-02-02 DOI: 10.1016/j.matlet.2025.138172
Shuangjie Chu , Qian Liu , Bohao Zhou , Yanhui Wang , Guangkui Hu , Bo Mao
{"title":"On the anomalous strain rate dependence of working hardening and fracture behavior of an ultra-high strength 1470 MPa dual phase steel","authors":"Shuangjie Chu ,&nbsp;Qian Liu ,&nbsp;Bohao Zhou ,&nbsp;Yanhui Wang ,&nbsp;Guangkui Hu ,&nbsp;Bo Mao","doi":"10.1016/j.matlet.2025.138172","DOIUrl":"10.1016/j.matlet.2025.138172","url":null,"abstract":"<div><div>Dual phase (DP) steels are among the most widely used automotive steels due to their excellent synergic engineering performance. In this paper, the strain-hardening and fracture behavior of a commercial highest grade DP1470 steels were investigated by performing quasi- and high-speed tensile tests with a strain rate ranging from 10<sup>-4</sup> to 10<sup>2</sup>/s. It is notable that the tensile strength and total elongation of DP1470 are insensitive to the strain rate, while the latter affects the fracture mechanism significantly. Microstructural and fractography analysis were carried out to reveal the deformation and failure mechanism. This intriguing behavior is associated with the distinct mechanical response of ferrite and martensite to strain rate, together with the high martensite volume fraction.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"385 ","pages":"Article 138172"},"PeriodicalIF":2.7,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143263192","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
Non-uniform distribution of rare-earth elements causing high-coercivity in temperature-compensated (SmEr)2Co17 magnets
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-02-02 DOI: 10.1016/j.matlet.2025.138173
Zan Long , Chaoyue Zhang , Yuqing Li , Baoguo Zhang , Qiong Wu , Ming Yue
{"title":"Non-uniform distribution of rare-earth elements causing high-coercivity in temperature-compensated (SmEr)2Co17 magnets","authors":"Zan Long ,&nbsp;Chaoyue Zhang ,&nbsp;Yuqing Li ,&nbsp;Baoguo Zhang ,&nbsp;Qiong Wu ,&nbsp;Ming Yue","doi":"10.1016/j.matlet.2025.138173","DOIUrl":"10.1016/j.matlet.2025.138173","url":null,"abstract":"<div><div>In this article, the element distribution was optimized by introducing isothermal annealing for the (Sm<sub>0.4</sub>Er<sub>0.6</sub>)<sub>2</sub>Co<sub>17</sub> alloys and magnet with remanence temperature-coefficient (20-150℃) of −0.00087 %/℃ and coercivity of 30.0 kOe was finally prepared, along with (<em>BH</em>)<sub>max</sub> of 18.1 MGOe. The low remanence temperature-coefficient reveals that the (Sm<sub>0.4</sub>Er<sub>0.6</sub>)<sub>2</sub>Co<sub>17</sub> magnet can provide a steady magnetic flux suitable for application in precision instruments. In addition, the composition distribution in the magnet was analyzed in detail, and the contribution of the non-uniform distribution of Er to the coercivity was revealed through micromagnetic simulations. The results of micromagnetic simulations confirm that the concentrated distribution of Er in the intracellular phase is beneficial for maintaining high coercivity of (Sm<sub>0.4</sub>Er<sub>0.6</sub>)<sub>2</sub>Co<sub>17</sub> magnets. This finding can provide effective reference for the development of rare-earth permanent magnets with outstanding temperature stability, and promote the development of precision instruments.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"385 ","pages":"Article 138173"},"PeriodicalIF":2.7,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175095","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
Shock wave effect on scandium oxide (Sc2O3) for highly efficient environment remediation application
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-02-02 DOI: 10.1016/j.matlet.2025.138174
Rajkumar Sokkalingam , Giri Devaraj Raja , Esakki Muthu Sankaran , Sambasivam Sangaraju , Arumugam Sonachalam
{"title":"Shock wave effect on scandium oxide (Sc2O3) for highly efficient environment remediation application","authors":"Rajkumar Sokkalingam ,&nbsp;Giri Devaraj Raja ,&nbsp;Esakki Muthu Sankaran ,&nbsp;Sambasivam Sangaraju ,&nbsp;Arumugam Sonachalam","doi":"10.1016/j.matlet.2025.138174","DOIUrl":"10.1016/j.matlet.2025.138174","url":null,"abstract":"<div><div>Scandium oxide (Sc<sub>2</sub>O<sub>3</sub>), renowned for its exceptional properties, has enticed expressive scientific outfits about its prospective applications in diversified fields, including catalytic applications. In this study, the influence of shock waves on the structure and morphology of Sc<sub>2</sub>O<sub>3</sub> was investigated. Its impact on highly efficient photocatalytic dye degradation applications have also been explored. Through experimental investigations, the role of shock waves in modifying the Sc<sub>2</sub>O<sub>3</sub> structural characteristics has been manifested, with specific emphasis on its surface area, crystallinity, and particle size distribution. Sc<sub>2</sub>O<sub>3</sub>, with its altered structural morphology post-shock wave exposure, exhibited improved biocompatibility and surface area, rendering it an attractive candidate for various applications. These properties open avenues for its utilization in drug delivery systems and biocompatible coatings. In photocatalytic dye degradation, the shock wave-induced structural fluctuations in Sc<sub>2</sub>O<sub>3</sub> are harnessed to enhance its photocatalytic performance. The increased surface area and altered crystallinity contributed to enhanced light absorption and more efficient electron-hole pair generation, resulting in superior photocatalytic activity. The findings presented here have the potential to revolutionize the utilization of Sc<sub>2</sub>O<sub>3</sub> in cutting-edge technologies and pave the way for more sustainable and efficient solutions in biotechnology and environmental conservation.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"385 ","pages":"Article 138174"},"PeriodicalIF":2.7,"publicationDate":"2025-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350082","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
Deformation behavior of Ti2AlC particles in aluminum matrix composites characterized by electron backscatter diffraction
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-02-01 DOI: 10.1016/j.matlet.2025.138171
Yue Sun , Gaohui Wu
{"title":"Deformation behavior of Ti2AlC particles in aluminum matrix composites characterized by electron backscatter diffraction","authors":"Yue Sun ,&nbsp;Gaohui Wu","doi":"10.1016/j.matlet.2025.138171","DOIUrl":"10.1016/j.matlet.2025.138171","url":null,"abstract":"<div><div>The Al matrix composite reinforced by deformed Ti<sub>2</sub>AlC particles was fabricated using spark plasma sintering, demonstrating high yield strength and plasticity. The evolution of microstructure, texture and Schmid factor (SF) was investigated by ex-situ electron backscatter diffraction (EBSD) to explore the deformation behavior of Ti<sub>2</sub>AlC. The Kernel average misorientation (KAM) maps show that large plastic deformation is mainly concentrated in Ti<sub>2</sub>AlC, which promotes the generation of geometrically necessary dislocations (GNDs). As the strain increases, the GND density gradually increases, accompanied by further enhancement of the basal texture of Ti<sub>2</sub>AlC (0001). The statistical results of SF indicate that the proportion of high SF in Ti<sub>2</sub>AlC significantly increases after deformation, which is more conducive to the activation of slip systems. Therefore, compared with composites reinforced by non-deformable particles, Ti<sub>2</sub>AlC dominates the deformation of the composite, especially promoting the enhancement of texture and the improvement of SF during the deformation process.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"385 ","pages":"Article 138171"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175141","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
Corrosion performance of ZnO-Based hybrid coated mild steel in concrete pore solutions
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-02-01 DOI: 10.1016/j.matlet.2025.138163
V.S. Suhas , T. Shanmugapriya
{"title":"Corrosion performance of ZnO-Based hybrid coated mild steel in concrete pore solutions","authors":"V.S. Suhas ,&nbsp;T. Shanmugapriya","doi":"10.1016/j.matlet.2025.138163","DOIUrl":"10.1016/j.matlet.2025.138163","url":null,"abstract":"<div><div>Zinc oxide (ZnO) is recognized for its excellent barrier properties and compatibility with various coating matrices, making it a promising material for corrosion protection. This study evaluates the effectiveness of different ZnO-based coatings, including ZnO-epoxy, ZnO-PVDF (polyvinylidene-fluoride), a ZnO/epoxy-PVDF hybrid, and ZnO applied via electrolytic deposition, in reducing corrosion of mild steel in high-pH environments, typical of concrete pore solutions. Corrosion performance was assessed using Open Circuit Potential (OCP), Tafel polarization (TP), weight loss analysis, and Field Emission Scanning Electron Microscopy (FESEM). The results indicate that the ZnO-epoxy-PVDF hybrid coating offers the highest corrosion resistance, with the lowest corrosion rate, highest inhibition efficiency, and minimal surface degradation, as observed in FESEM images. This study highlights the potential of combining ZnO with PVDF and epoxy to improve mild steel durability in aggressive alkaline environments significantly.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"385 ","pages":"Article 138163"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176168","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 nanowalls-like Co3O4 synthesized via a rapid direct heating approach
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-02-01 DOI: 10.1016/j.matlet.2025.138124
Soo-Ling Bee , Chia-Wen Ooi , Swee-Yong Pung
{"title":"Development of nanowalls-like Co3O4 synthesized via a rapid direct heating approach","authors":"Soo-Ling Bee ,&nbsp;Chia-Wen Ooi ,&nbsp;Swee-Yong Pung","doi":"10.1016/j.matlet.2025.138124","DOIUrl":"10.1016/j.matlet.2025.138124","url":null,"abstract":"<div><div>Conventional methods for synthesizing Co<sub>3</sub>O<sub>4</sub> nanomaterials, such as sol–gel and hydrothermal techniques, typically require high energy consumption and long processing times. This study introduces a single-step direct heating (DH) method, offering a faster and more energy-efficient alternative by synthesizing Co<sub>3</sub>O<sub>4</sub> nanomaterials on kanthal substrate in just 20 min, using minimal electrical power of only 50 W. The influence of precursor selection on the formation of Co<sub>3</sub>O<sub>4</sub> was examined using XRD, FESEM, EDX, and UV–Visible spectroscopy. Among the tested precursors, C<sub>4</sub>H<sub>6</sub>CoO<sub>4</sub>·4H<sub>2</sub>O was identified as the optimal precursor, leading to the formation of a nanowall-like morphology with band gaps ranging from 1.85 to 2.17 eV.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"385 ","pages":"Article 138124"},"PeriodicalIF":2.7,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143263105","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
Efficient photothermal interfacial evaporation of foamed Cu/CuO mesh with 3D arch structure
IF 2.7 4区 材料科学
Materials Letters Pub Date : 2025-01-31 DOI: 10.1016/j.matlet.2025.138113
Pengqi Li , Chunxia Mu , Zerong Yuan , Zhipeng Wen , Shanli Qin , Zhangfa Tong , Kelei Huang
{"title":"Efficient photothermal interfacial evaporation of foamed Cu/CuO mesh with 3D arch structure","authors":"Pengqi Li ,&nbsp;Chunxia Mu ,&nbsp;Zerong Yuan ,&nbsp;Zhipeng Wen ,&nbsp;Shanli Qin ,&nbsp;Zhangfa Tong ,&nbsp;Kelei Huang","doi":"10.1016/j.matlet.2025.138113","DOIUrl":"10.1016/j.matlet.2025.138113","url":null,"abstract":"<div><div>A foamed Cu/CuO mesh was utilized to construct different dimensions (2D, 2.5D, and 3D) interfacial evaporators. The CuO nano-flowers were in-situ formed in the surface of Cu mesh, displaying the excellent hydrophilia, solar-light absorption, and water transport. The optimal 3D arched structure achieved the highest evaporation efficiency and rate, which was about 97.6 % and 1.93 kg·m<sup>−2</sup>·h<sup>−1</sup>, respectively. Besides, 3D arched evaporator exhibited excellent desalination ability. This work suggested that regulating the dimensions of photothermal mesh can effectively improve the efficiency of solar-driven interfacial evaporation.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"385 ","pages":"Article 138113"},"PeriodicalIF":2.7,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143176170","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
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