Journal of Science: Advanced Materials and Devices最新文献

{"title":"A review of carbon-based electrocatalytic electrodes for reducing anionic pollutants in wastewater","authors":"Krishnan Vancheeswaran Prasad ,&nbsp;Mohanraj Kumar ,&nbsp;Mohd Shkir ,&nbsp;Jih-Hsing Chang","doi":"10.1016/j.jsamd.2025.100928","DOIUrl":"10.1016/j.jsamd.2025.100928","url":null,"abstract":"<div><div>Electrochemical processes are emerging as viable alternatives for enhancing conventional wastewater treatment technologies. This paper explores the use of carbon-based electrodes, such as carbon nanotubes (CNTs) and graphene, in decontaminating anionic pollutants from wastewater. Carbon-based electrodes, including various graphene derivatives, exhibit high efficiency in degrading and mineralizing recalcitrant organic pollutants like cyanide, fluoride, nitrate, nitrite, phosphate, sulfate, and chloride. Introducing pulsed voltage applications allows for in-situ electrochemical cleaning of electrode materials, boosting performance despite higher energy consumption. The stability and application of these electrodes present challenges that must be addressed for practical implementation. The paper summarizes the key conclusions from current investigations and examines the decontamination efficacy of several carbon-based electrodes concerning various anionic contaminants. Important factors impacting their practical application include environmental issues, current efficiency, electrode durability, and corrosion resistance. The review also emphasizes the effectiveness of carbon and graphene derivatives in treating wastewater containing anionic contaminants, especially in removing anionic dyes. These materials possess excellent electrochemical and adsorption properties, making them highly efficient in eliminating pollutants. Research has shown that graphene-based materials, due to their large surface area and high conductivity, significantly enhance the decontamination process. Carbon-based electrodes, particularly those derived from graphene, have considerable potential to improve wastewater treatment efficiency. They are a valuable addition to current water filtration methods by providing a sustainable and effective means to remove anionic contaminants.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100928"},"PeriodicalIF":6.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514300","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}

{"title":"Interfacial charge transfer mechanism in bismuth oxide/tungsten oxide p-n heterojunction photocatalyst for methylene blue degradation","authors":"Yangwen Xia ,&nbsp;Yifan Lei ,&nbsp;Zulong Liu ,&nbsp;Lili He ,&nbsp;Yu Jiao ,&nbsp;Jiacai Chen ,&nbsp;Xiaodong Zhu","doi":"10.1016/j.jsamd.2025.100927","DOIUrl":"10.1016/j.jsamd.2025.100927","url":null,"abstract":"<div><div>In this study, tungsten trioxide (WO₃) photocatalysts were synthesized through a hydrothermal process, utilizing sodium tungstate (Na₂WO₄) as the starting material in the presence of polyvinylpyrrolidone (PVP) at different heat-treatment temperatures (180 °C, 190 °C, and 200 °C). The 190 °C sample exhibited a hybrid rod-sheet morphology, achieving the highest methylene blue (MB) degradation (47.6 % in 60 min under light). In order to improve the activity, the molar ratio of Bi₂O₃/WO₃ was adjusted, and the Bi₂O₃/WO₃ p-n heterojunction was constructed. The ratio critically governed both morphology and charge dynamics: increasing Bi₂O₃ content promoted the growth of spherical Bi₂O₃ particles on WO₃ rods/sheets, optimizing interfacial contact and light harvesting. When the molar ratio of Bi₂O₃/WO₃ was 60 %, the composite photocatalyst displayed the greatest photocatalytic property, the first-order reaction rate constant of 0.0100 min⁻¹, which was 3.6 times WO₃. The Mott-Schottky curve indicated that p-n heterojunctions were formed between Bi₂O₃ and WO₃, and the internal electric field (IEF) at the interface effectively promoted the separation of charge carriers. During illumination, photogenerated electrons in the conduction band (CB) of Bi₂O₃ migrate to the CB of WO₃, and holes in the valence band (VB) of WO₃ migrate to the VB of Bi₂O₃, enhancing the utilization of charge carriers.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100927"},"PeriodicalIF":6.7,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144514301","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}

{"title":"Structural, morphological, optical, dielectric, electrical, magnetic, and electrochemical properties of V-doped CoFe2O4 nanoparticles synthesized by the combustion method","authors":"Njod Al Sdran ,&nbsp;Sajid Ali Ansari ,&nbsp;Kamlesh V. Chandekar ,&nbsp;Mohd Taukeer Khan ,&nbsp;Thamraa Alshahrani ,&nbsp;Zubair Ahmad ,&nbsp;H. Elhosiny Ali ,&nbsp;Mohd Shkir","doi":"10.1016/j.jsamd.2025.100923","DOIUrl":"10.1016/j.jsamd.2025.100923","url":null,"abstract":"<div><div>In this study, vanadium-doped cobalt ferrite (V:CoFe₂O₄) nanoparticles with varying V concentrations (0.0–1.0 wt%) were synthesized via a cost-effective flash combustion method and systematically investigated for their structural, morphological, optical, dielectric, magnetic, and electrochemical properties. X-ray diffraction (XRD) spectra confirmed the formation of a pure inverse spinel structure, with a gradual reduction in lattice parameter (from 8.36 to 8.33 Å) and crystallite size (from 29.4 to 16.2 nm) upon V doping. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analyses revealed agglomerated spherical nanoparticles with decreasing grain size and improved surface homogeneity. Raman and XPS studies verified successful V incorporation, accompanied by partial cation redistribution between A and B sites. Photoluminescence spectra showed emission quenching near 625 nm with increasing V content, attributed to non-radiative recombination centers. Dielectric measurements exhibited high ε′ values (∼150–160) and enhanced frequency stability, while AC conductivity increased at higher frequencies due to polaron hopping. Magnetic analysis indicated a non-monotonic variation in saturation magnetization (22.8–70.8 emu/g) and coercivity (920–1650 Oe), governed by crystallite size, cation migration, and V oxidation states. Notably, electrochemical testing revealed a peak specific capacitance of 234.4 F/g for 0.5 wt% V:CoFe₂O₄, an 82 % improvement over the undoped counterpart, highlighting its potential in spintronic and energy storage devices. These results demonstrate that controlled V-doping provides a tunable pathway to enhance the multifunctional performance of cobalt ferrite nanomaterials.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100923"},"PeriodicalIF":6.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144557005","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}

{"title":"A review of electrospun polymeric fibers as potential drug delivery systems for tunable release kinetics","authors":"Sthuthi Jose M,&nbsp;Shanmugam Sumathi","doi":"10.1016/j.jsamd.2025.100933","DOIUrl":"10.1016/j.jsamd.2025.100933","url":null,"abstract":"<div><div>Recently, the pursuit of innovative targeted drug delivery strategies has been one of the major frontiers in biomedical research. Electrospun nanofibers have emerged as an appealing vehicle for drug delivery owing to their remarkable drug-loading efficiency and adaptability in enabling drug administration through multiple delivery routes. This review overviews the potential of electrospinning in generating polymeric fibers as an efficient delivery vehicle. It outlines the fundamentals of electrospinning process, key parameters influencing the fiber characteristics, and the advantages of electrospun fibers that outperform traditional carriers. The essence of drug delivery and the secret underlying the selection of optimal drug-carrier pairs are also discussed in detail with the recent literature support. This study compares synthetic/natural and hydrophilic/hydrophobic polymer combinations as superior drug carriers in regulating the release patterns compared to individual polymer-carriers. A comprehensive discussion on drug release patterns, the mechanism of release, the necessity for tailoring release kinetics, and the selection of best-fit models for drug release gives insights into the design of delivery platforms. Drawing on recent advances, this article also delves into the advancing fields of tissue engineering, wound care, and cancer therapy, where an electrospun polymeric delivery system transforms the treatment strategies with patient-compiled, site-specific, controlled, and sustained therapeutic outcomes. Overall, this study emphasizes electrospun polymeric fibers as a promising solution in resolving current drug delivery challenges as a potential vehicle for drug delivery.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100933"},"PeriodicalIF":6.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331327","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}

{"title":"Processes for fabricating carbon-based supports in Ru-based catalysts in ammonia decomposition: A state-of-art review","authors":"Hao Guan ,&nbsp;Mengyuan Yu ,&nbsp;Wenyue Zheng ,&nbsp;Yuchen Zhao","doi":"10.1016/j.jsamd.2025.100929","DOIUrl":"10.1016/j.jsamd.2025.100929","url":null,"abstract":"<div><div>In the ammonia decomposition reaction for hydrogen production, ruthenium is commonly used as a catalyst because of its excellent catalytic performance. Recent research has focused on the reaction mechanism of ruthenium-based catalysts, their microstructure and support, as well as the modulation of catalyst performance by various dopant elements, aiming to reduce ruthenium loading and enhance its catalytic efficiency for low-temperature applications. This review summarizes the fundamental mechanisms of ruthenium-catalyzed ammonia decomposition and recent advances in catalyst preparation methods, with particular emphasis on the influence of carbon-based catalyst supports on ammonia decomposition activity. The impregnation method can enhance the dispersion of ruthenium on the support, thereby increasing the number of effective active sites. The precipitation deposition method controls the metal-support interactions during precipitation formation, contributing to the stability of the metal and the generation of active sites, thus improving the efficiency of ammonia decomposition reactions. The sol-gel method can produce catalyst support with surface features that can alter the electronic density of ruthenium, optimizing its interactions with ammonia molecules, and thereby enhancing its catalytic activity. The high specific surface area and the optimized pore structure of the carbon-based support facilitate the adsorption or dispersion of Ru particles, thereby increasing the electronic density of Ru. A higher electronic density could enhance the attraction between the electrons on the Ru surface and ammonia molecules, thereby promoting the adsorption and dissociation of ammonia molecules. At the same time, a higher electronic density may lower the binding energy of the nitrogen-nitrogen bond, facilitating its cleavage and accelerating the ammonia decomposition process. In discussing emerging directions for development in ruthenium-based ammonia decomposition catalysts, we also introduced the emerging research trends in ammonia decomposition catalysts, including (1) component prediction and optimization using high-throughput screening strategies and (2) combined machine learning and computational simulations for kinetic process analysis.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100929"},"PeriodicalIF":6.7,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144534625","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}

{"title":"Optical band gap reduction of polyethylene oxide through black iron (III) oxide nanoparticles insertion: Structural, magnetic, morphological and optical properties","authors":"Dyari M. Mamand ,&nbsp;Siyamand S. Khasraw ,&nbsp;Rebar T. Abdulwahid ,&nbsp;Pshko A. Mohammed ,&nbsp;Abdollah Hassanzadeh ,&nbsp;Omed Gh Abdullah ,&nbsp;Dana S. Muhammad ,&nbsp;Shujahadeen B. Aziz ,&nbsp;Jamal Hassan","doi":"10.1016/j.jsamd.2025.100937","DOIUrl":"10.1016/j.jsamd.2025.100937","url":null,"abstract":"<div><div>In this study, iron (III) oxide (Fe₃O₄) nanoparticles were incorporated into dissolved polyethylene oxide to develop magnetic polymer nanocomposites with enhanced linear and nonlinear optical properties. This work focuses on understanding how doping with iron (III) oxide affects the crystallinity, magnetic behavior, and optical characteristics of the composites. Fourier Transform Infrared Spectroscopy analysis confirmed interactions between the nanoparticles and polymer functional groups. X-ray Diffraction results revealed increased amorphous content, with the full width at half maximum increasing from 0.371 to 0.742, indicating reduced crystallite size and higher structural disorder. At higher nanoparticle concentrations, weak crystalline peaks suggested nanoparticle agglomeration. Magnetic properties were thoroughly studied through magnetic hysteresis (B–H) curves. Optical band gaps determined by the Tauc model showed a significant decrease in the direct band gap from 5.4 eV to 1.72 eV and the indirect band gap from 4.78 eV to 1.41 eV. The refractive index and extinction coefficient indicated increased electric susceptibility and defect states. Using the Wemple–DiDomenico single oscillator model, key parameters such as oscillator energy decreased from 4.8 eV to 2.87 eV, static refractive index increased from 1.68 to 2.14, and dispersion energy rose with nanoparticle concentration, the moments of the optical transitions <span><math><mrow><msub><mi>M</mi><mrow><mo>−</mo><mn>1</mn></mrow></msub></mrow></math></span> and <span><math><mrow><msub><mi>M</mi><mrow><mo>−</mo><mn>3</mn></mrow></msub></mrow></math></span> increased from 1.83 to 0.078 to 3.61 and 0.43, respectively. Dielectric function analysis revealed increases in effective mass (from 2.46 × 10⁵⁶ to 10.52 × 10⁵⁶), high-frequency dielectric constant (from 3.39 to 7.93), and plasma frequency (from 4.57 × 10⁷ to 6.18 × 10⁷). Additionally, thermal emissivity and sheet resistance were evaluated to better understand light-matter interactions. These findings provide valuable insights for designing advanced materials with potential applications in energy storage, sensors, and electronic devices, which is crucial for the community.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100937"},"PeriodicalIF":6.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321778","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}

{"title":"Combined X-ray and neutron tomography for simultaneous assessment of in silico mechanical response and in vitro biological behavior of graded scaffolds: a preliminary study","authors":"Maria Laura Gatto ,&nbsp;Fabrizio Fiori ,&nbsp;Alessandro Tengattini ,&nbsp;Lukas Helfen ,&nbsp;Marcello Cabibbo ,&nbsp;Mattia Utzeri ,&nbsp;Michele Furlani ,&nbsp;Giorgia Cerqueni ,&nbsp;Daniela Lamanna ,&nbsp;Monica Mattioli-Belmonte ,&nbsp;Paolo Mengucci","doi":"10.1016/j.jsamd.2025.100935","DOIUrl":"10.1016/j.jsamd.2025.100935","url":null,"abstract":"<div><div>This study presents a pioneering approach combining X-ray Computed Tomography (XCT) and Neutron Computed Tomography (NCT) to simultaneously assess the biomechanical and biological behavior of bone scaffolds fabricated by additive manufacturing. XCT was employed to model post-fabrication scaffold geometry, enabling precise finite element (FE) predictions on how each defect type, such as strut densification, lack of fusion and porosity, impacts the overall mechanical performance of the scaffold. Defect-inclusive models were successfully validated against experimental data. NCT was instead concomitantly used to assess short-term changes in the behavior of MG-63 human osteoblast-like cells under different culture conditions. Quantitative analysis of NCT scans of our samples showed that neutrons, thanks to their sensitivity to organic material, are able to discriminate between different compositions of the organic material itself. This research not only provides a comprehensive framework for preclinical characterization of scaffolds, but also paves the way for more efficient evaluation of implantable devices, ultimately reducing the reliance on animal models in biomaterials research.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100935"},"PeriodicalIF":6.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321922","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}

{"title":"Eco-friendly synthesis of magnetic ZnO/Fe3O4 nanocomposites: Structural, morphological, antimicrobial, and anticancer evaluation","authors":"Maha M. Almoneef ,&nbsp;Manal A. Awad ,&nbsp;Haia H. Aldosari ,&nbsp;Awatif A. Hendi ,&nbsp;Saad G. Alshammari ,&nbsp;Horiah A. Aldehish ,&nbsp;Nada M. Merghani ,&nbsp;Arwa M. Alsahli ,&nbsp;Bdour M. Almutairi ,&nbsp;Rana M. Alharbi ,&nbsp;Afaf A. Almlla ,&nbsp;Jumanah M. Aljazeeri","doi":"10.1016/j.jsamd.2025.100921","DOIUrl":"10.1016/j.jsamd.2025.100921","url":null,"abstract":"<div><div>The synthesis of nanomaterials has traditionally relied on physical and chemical methods, which, while initially effective, are often expensive and environmentally detrimental. In contrast, biological approaches utilizing natural agents such as plant extracts, enzymes, and microorganisms offer more sustainable and eco-friendly alternatives. In this study, bio-synthesized ZnO/Fe₃O₄ nanocomposites (NCs) were prepared via a chemical precipitation method, using camel urine as a natural stabilizing and capping agent. The synthesized NCs were comprehensively characterized using SEM, EDX, TEM, XRD, UV–Vis spectroscopy, FTIR, and TGA. Transmission electron microscopy revealed an average particle size of 7.41 nm, while XRD analysis confirmed the polycrystalline nature of the ZnO/Fe₃O₄ NCs. UV–Vis analysis indicated an energy band gap of 2.21 eV. FTIR spectra identified functional groups associated with ZnO/Fe₃O₄, and TGA demonstrated thermal stability up to 940 °C. The nanocomposites exhibited significant anticancer and antibacterial activities in a concentration-dependent manner. MTT assays against HCT116 colorectal cancer cells showed a reduction in cell viability from approximately 80 % at low concentrations to about 43 % at 100 μg/mL, indicating strong dose-dependent cytotoxicity. Antibacterial tests revealed higher efficacy against Gram-negative bacteria (<em>E. coli</em>, Pseudomonas sp.) than Gram-positive strains (<em>S. aureus</em>), with no observable activity against MRSA. Notably, at a concentration of 15 mg, inhibition zones reached 0.9 mm for Pseudomonas sp. and 1.4 mm for <em>E. coli</em>, whereas significantly smaller zones were observed at lower concentrations. These findings highlight the potential of ZnO/Fe₃O₄ NCs for biomedical applications, particularly as antibacterial coatings or anticancer agents. To the best of our knowledge, this is the first report on the synthesis of ZnO/Fe₃O₄ NCs using camel urine and their evaluation against colorectal cancer cells, representing a novel and sustainable approach in nanomedicine.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100921"},"PeriodicalIF":6.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331325","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}

{"title":"Magnetocaloric effect in frustrated magnetic oxides","authors":"B. Shanta ,&nbsp;X. Zhao ,&nbsp;N. Li ,&nbsp;X.F. Sun","doi":"10.1016/j.jsamd.2025.100932","DOIUrl":"10.1016/j.jsamd.2025.100932","url":null,"abstract":"<div><div>In this work, two rare earth borates, REBO₃ (RE = Gd, Yb), were synthesized using the traditional solid-state method. Both compounds crystallize in a monoclinic structure belonging to space group <em>C</em>2/<em>c</em>. The magnetism and magnetocaloric effect of REBO₃ compounds have been studied through isothermal magnetization, magnetic susceptibility, and specific heat measurement. No obvious long-range order in either GdBO₃ or YbBO₃ compounds can be found at the low-temperature T ≥ 2 K in susceptibility and specific heat curves, suggesting a paramagnetic-like behavior at low temperatures. However, these compounds exhibit weak short-range antiferromagnetic couplings at low temperatures, as indicated by the Curie-Weiss fitting and magnetic susceptibilities under varying applied fields. The calculated value of magnetic entropy change -Δ<em>S</em>_m reaches the maximum value of 10.8 J mol⁻¹ K⁻¹ for a field change from 0 to 7 T at 2 K for GdBO₃, and YbBO₃ is 4.9 J mol⁻¹ K⁻¹. However, GdBO₃ shows an adiabatic temperature change (Δ<em>T</em>_ad) of 3.3 K and 7.9 K for field changes of 0–3 T and 0–7 T, respectively. Furthermore, we found that, in the liquid helium temperature range, GdBO₃ is a more competitive magnetocaloric material than YbBO₃. These results indicate the presence of distinct magnetic anisotropy for various rare-earth ions, as shown by isothermal magnetization and heat capacity measurements, which suggests that REBO₃ is a promising system for studying a variety of magnetic ground states.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100932"},"PeriodicalIF":6.7,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144366525","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}

{"title":"Magnetically controlled bidirectional 2×2 elastic switch using Terfenol-D in a phononic crystal-based Mach-Zehnder interferometer","authors":"Sajjad Ranjbar,&nbsp;Fakhroddin Nazari,&nbsp;Rassoul Hajizadeh","doi":"10.1016/j.jsamd.2025.100926","DOIUrl":"10.1016/j.jsamd.2025.100926","url":null,"abstract":"<div><div>This study introduces a novel design for a bidirectional 2 × 2 elastic switch based on a Mach-Zehnder interferometer, which modulates input wave phases through the application of an external magnetic field, enabling precise control over the output wave paths. The magnetic switching mechanism utilizes two-dimensional solid-solid phononic crystals composed of a square lattice of tungsten cylinders embedded in a poly methyl methacrylate (PMMA) substrate. The Mach-Zehnder interferometer features two identical symmetrical arms filled with Terfenol-D cylinders, operating effectively within the MHz frequency range. Control of the switch is achieved by dynamically tuning Young's modulus of the Terfenol-D cylinders via the applied magnetic field. This modulation induces phase shifts in the elastic waves traveling through each arm, thereby directing the output based on the resulting phase difference. Finite element method simulations validate the design and demonstrate the switch's excellent performance, including an average extinction ratio of 15.14 dB and low insertion losses averaging 0.26 dB. The proposed elastic switch combines structural simplicity with strong functional potential, making it a promising candidate for applications in acoustic communication systems and networks.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100926"},"PeriodicalIF":6.7,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321923","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}