Journal of Science: Advanced Materials and Devices最新文献

{"title":"Enhancing the performance of Bi2O3–ZnO semiconductor bilayers for photoelectrochemical electrodes by strategically engineering oxygen vacancies","authors":"Yuan-Chang Liang,&nbsp;Po-Hsiang Wang","doi":"10.1016/j.jsamd.2025.100895","DOIUrl":"10.1016/j.jsamd.2025.100895","url":null,"abstract":"<div><div>This study successfully synthesized sheet-like triangular Bi₂O₃ using the hydrothermal method and subsequently annealed it in a hydrogen-contained atmosphere to effectively introduce oxygen vacancies. ZnO was fabricated through sputtering at elevated substrate temperatures, which also facilitated the formation of oxygen vacancies. We prepared Bi₂O₃/ZnO composites to assess their performance in photoelectrochemical (PEC) and photocatalytic applications under illumination. Oxygen vacancies significantly enhance the materials' charge separation capabilities, resulting in increased photocurrent density and reduced interfacial resistance while also boosting the number of surface active sites. Furthermore, control over the annealing conditions and substrate temperatures can optimize the generation of oxygen vacancies, thereby enhancing the performance of the composites. Introducing oxygen vacancies and establishing a Z-scheme structure in Bi₂O₃ and ZnO represent effective strategies for advancing the potential applications of oxide semiconductor composites in PEC electrodes.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100895"},"PeriodicalIF":6.7,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903875","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 novel bilayer hydrogel/ fibrous wound dressing with Falcaria vulgaris extract and green synthesized ZnO nanoparticles for enhanced wound healing","authors":"Tahereh Moshfeghi ,&nbsp;Najmeh Najmoddin ,&nbsp;Elham Arkan ,&nbsp;Leila Hosseinzadeh","doi":"10.1016/j.jsamd.2025.100896","DOIUrl":"10.1016/j.jsamd.2025.100896","url":null,"abstract":"<div><div>Since wound healing is a multifaceted process, most conventional scaffolds do not resemble the complexity of the natural extracellular matrix. Thus, they cannot provide a suitable niche for endogenous tissue reconstruction. To overcome this issue and to accelerate the healing process, we developed a biomimetic double-layer dressing comprising sodium alginate/gelatin hydrogel loaded with <em>Falcaria Vulgaris</em> extract and green synthesized zinc oxide nanoparticles (ZnO NPs) as the dermal layer and electrospun polyacrylonitrile (PAN) nanofibers as the epidermis matrix. FESEM images confirmed the existence of bead-free, smooth, and continuous PAN fibers with proper binding on the surface of the hydrogel. The multifunctional double layer dressing revealed admirable mechanical characteristics including tensile strength (5 ± 0.05 MPa), elastic modulus (0.4 ± 0.1 MPa) and elongation at break (50 ± 5 %) along with proper swelling capacity and degradation rate. Such dressing exhibited an inhibition zone against both gram-negative (20 ± 2 mm) and gram-positive (21 ± 2 mm) bacterial strains via controlled release of ZnO NPs without any toxicity in the vicinity of L929 cells. The high potency of such intriguing bilayer dressing for wound repair was further confirmed via the promotion of wound contraction, collagen synthesis, re-epithelialization, and new tissue formation during <em>in vivo</em> assay.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100896"},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143903874","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":"Shape anisotropy-induced local incoherent magnetization: Implications for magnetic sensor tuning","authors":"Jinwoo Kim ,&nbsp;BB Nayak ,&nbsp;I.V. Soldatov ,&nbsp;R. Schäfer ,&nbsp;Byeonghwa Lim ,&nbsp;CheolGi Kim","doi":"10.1016/j.jsamd.2025.100893","DOIUrl":"10.1016/j.jsamd.2025.100893","url":null,"abstract":"<div><div>The geometry of magnetoresistive sensors based on thin magnetic films plays a crucial role in shaping their magnetization behavior and overall performance. This study investigates Wheatstone bridge sensors made with NiFe single-layer films (thickness: 10–40 nm; width: 20–60 μm; length: 500 μm) to analyze the impact of shape anisotropy on magnetization distribution. We observed domain images and sensor signals by applying a magnetic field with a constant direction and strength while varying the strength of a second magnetic field applied perpendicularly to the first. Wide-field Kerr microscopy revealed that magnetization reversal occurs locally and incoherently, with the degree of incoherence increasing in geometries with stronger demagnetizing fields. The demagnetizing field in rectangular-shaped thin films was calculated, revealing a sharp increase in field strength 3–4 μm from the bridge element edge when magnetized in the short-length direction, which results in localized magnetization behavior. The sensor signals were calculated and measured for various width-to-length ratios of the bridge elements and external magnetic field strengths. Results show that variations in sensor geometry and external magnetic fields can influence peak-to-peak voltage by up to 41 % and make significant hysteresis in the sensor signal. These findings provide valuable insights into optimizing the design and performance of magnetoresistive sensors for advanced applications.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100893"},"PeriodicalIF":6.7,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902004","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":"Fabrication of biodegradable silicon nitride 3D printed nanocomposite with enhanced mechanical and antimicrobial properties for bone tissue repair","authors":"Femi B. Alakija ,&nbsp;David K. Mills","doi":"10.1016/j.jsamd.2025.100890","DOIUrl":"10.1016/j.jsamd.2025.100890","url":null,"abstract":"<div><div>Thermoplastics, such as polyetheretherketone (PEEK) and titanium implants, are used in medical and dental fields. However, there are frequent infection and implant rejection cases by the body. In the past decade, the use of metal nanoparticles has gained increasing popularity as an alternative treatment for minimizing microbial infections, leading to innovations in orthopedic surgery and wound healing. Recent studies have introduced new biomaterial bone substitutes, including advanced ceramics with innovative structural, biological, and mechanical properties. Nonetheless, these materials have limitations, as they are neither biodegradable nor biocompatible and lack inherent antimicrobial properties. Advanced materials like silicon nitride (Si₃N₄) exhibit enhanced osteogenic potential, toughness, and antimicrobial characteristics, providing added functionalities when fabricating 3D-printed implants for bone tissue regeneration, thus addressing the limitations of currently utilized materials. This research employed a patented electrodeposition process to coat magnesium oxide (MgO) nanoparticles on the outer surfaces of halloysite nanotubes (HNTs) to incorporate additional antimicrobial properties. Gentamicin sulfate was vacuum-loaded into the lumen of the MgO-coated HNTs. Si₃N₄ was combined with the gentamicin-loaded MgHNT to promote cell adhesion and differentiation, after which the resulting composite was 3D printed into the required shapes according to the testing protocol. Fourier Transformation Infrared Spectroscopy (FT-IR), X-ray Diffraction (XRD), and Scanning Electron Microscopy (SEM) images confirmed the presence of magnesium on halloysite nanotubes, thereby verifying the successful coating of MgO on HNT. Cytotoxicity tests indicated that the fabricated nanocomposites were not toxic to mammalian cells. Antimicrobial activity was assessed against <em>Escherichia coli</em> and <em>Staphylococcus aureus</em>, revealing significant inhibition of bacterial growth in all fabricated nanocomposites. Cell proliferation assays demonstrated that Si₃N₄ enhanced proliferation in all nanocomposites. The porosity test showed that the addition of Si₃N₄ does not affect the porosity or cell attachment of the fabricated nanocomposites, while histological staining revealed increased calcium and mucopolysaccharides. The nanocomposite exhibited excellent mechanical properties, including higher flexural strength, hardness, and a lower contact angle after surface coating with protein. Nanocomposites degraded slowly during the biodegradation test, facilitating the growth of new bone cells. Si₃N₄ enhances the roughness structure of the cellular surface, hydrophilicity, and protein adsorption capability.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100890"},"PeriodicalIF":6.7,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143902105","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":"Green synthesis of pH-sensitive magnetic bio-nanocomposite hydrogel based on galactomannan and sodium alginate for targeted colorectal cancer drug delivery","authors":"Shabnam Tahmasebi,&nbsp;Reza Mohammadi","doi":"10.1016/j.jsamd.2025.100892","DOIUrl":"10.1016/j.jsamd.2025.100892","url":null,"abstract":"<div><div>This study presents the development and characterization of pH-sensitive bio-nanocomposite hydrogel beads designed for the targeted delivery of doxorubicin (DOX) in colorectal cancer (CRC) therapy. The hydrogels were synthesized using galactomannan (GM) and sodium alginate (SA) matrices, reinforced with Fe₃O₄ magnetic nanoparticles (MNPs) to enhance drug release control and therapeutic efficacy. The MNPs were functionalized through a green synthesis approach, utilizing copper oxide nanoparticles (CuO NPs) reduced and stabilized by orange peel extract (OPE) and carbon quantum dots (CQDs) derived from tea leaves. Characterization techniques (FTIR, XRD, SEM, VSM, PL) confirmed the successful synthesis of the carrier components. In vitro drug release studies demonstrated pronounced pH-sensitive behavior, with minimal release (&lt;14 %) observed at pH 1.2 and substantial release (&gt;88 %) at pH 7.4, indicating potential for targeted delivery to the colorectal region. The carrier exhibited significant antioxidant and antibacterial activity effects against Gram-negative <em>Escherichia coli</em> (&gt;94 % inhibition) and Gram-positive <em>Staphylococcus aureus</em> (&gt;99 % inhibition). Moreover, MTT assays revealed significant cytotoxicity effects of drug-loaded carriers against HT-29 CRC cells. These findings showed the promising potential of synthesized materials for targeted CRC therapy, offering a synergistic combination of controlled drug release, antioxidant properties, and antibacterial activity.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100892"},"PeriodicalIF":6.7,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851793","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":"The preparation of phosphor-in-glass from borosilicate waste glasses by microwave-heating method","authors":"Achanai Buasri,&nbsp;Thanyakan Apichokbavontip,&nbsp;Auschara Planipol,&nbsp;Tanadaj Bunsarat,&nbsp;Vorrada Loryuenyong","doi":"10.1016/j.jsamd.2025.100888","DOIUrl":"10.1016/j.jsamd.2025.100888","url":null,"abstract":"<div><div>This research investigated the production of a phosphorescent material using borosilicate glass wastes derived from damaged or broken laboratory glassware. The borosilicate glass powder was first mixed with SrAl₂O₄: Eu²⁺, Dy³⁺ phosphor at a weight ratio of 10 %. The samples were subsequently sintered in a domestic microwave oven at 800 W for varying durations (6, 8, 10, 12, and 14 min) and in an electric furnace at different temperatures (700, 800, 900, and 1000 °C) for one h. Only samples produced through sintering in an electric furnace revealed the development of cristobalite crystals. This might be attributed to the rapid heating of microwaves, which hindered the crystallization process. Nevertheless, phosphorescent samples subjected to temperatures between 700 and 900 °C or for durations of 8–12 min exhibited green light emission at 524 nm due to the electronic transition from 4f⁶5d¹ to 4f⁷ of Eu²⁺. At elevated sintering temperatures or longer sintering durations, the emission peak, however, underwent a blue shift toward shorter wavelengths, resulting in a change in the color of emitted light to a blue color. The current findings indicate that a microwave oven is an efficient alternative to an electric furnace for sintering, as it reduces both energy consumption and processing time. Crystallization inhibition is also achieved via microwave heating.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100888"},"PeriodicalIF":6.7,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143848235","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":"Hybrid sensor integration in wearable devices for improved cardiovascular health monitoring","authors":"Bangul Khan ,&nbsp;Wasimullah Khan ,&nbsp;Muhammad Hasan Masrur ,&nbsp;Rana Talha Khalid ,&nbsp;Muhammad Awais ,&nbsp;Bilawal Khan ,&nbsp;Bee Luan Khoo ,&nbsp;Saad Abdullah","doi":"10.1016/j.jsamd.2025.100889","DOIUrl":"10.1016/j.jsamd.2025.100889","url":null,"abstract":"<div><div>Cardiovascular diseases (CVDs) remain the leading causes of global morbidity and mortality, underscoring the urgent need for advanced, non-invasive monitoring technologies. This review explores the integration of hybrid magnetic and optical sensors in wearable devices aimed at transforming cardiovascular health monitoring. Magnetic sensors, known for their strong signal capture and resistance to ambient light interference, complement optical sensors like photoplethysmography (PPG), which provide vital hemodynamic data, including blood volume changes and pulse rates. Combining these technologies improves monitoring systems' overall signal integrity, accuracy, and reliability. We critically evaluate current integration strategies, highlighting advanced multi-sensor data fusion techniques that enhance temporal resolution and enrich physiological data interpretation. Additionally, this review addresses the challenges in developing hybrid sensor systems, such as calibration accuracy, real-time data analytics, power optimization, and user-friendly design. Looking forward, we propose research directions focused on refining sensor integration frameworks to enable early detection and personalized management of CVDs. The synergy between magnetic and optical sensors significantly advances next-generation wearable diagnostics, greatly improving patient care and health outcomes. This review provides a comprehensive overview of the transformative potential of hybrid sensor technology in cardiovascular monitoring.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100889"},"PeriodicalIF":6.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850712","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":"Comparative study of CaFe2O4 with nanocomposites CaFe2O4@SiO2 and the effect of silica shell thickness on their physical and magnetic properties","authors":"E. Mohammadzadeh Shobegar ,&nbsp;S.E. Mousavi Ghahfarokhi ,&nbsp;H. Motamedi","doi":"10.1016/j.jsamd.2025.100886","DOIUrl":"10.1016/j.jsamd.2025.100886","url":null,"abstract":"<div><div>In this paper, a comparison between CaFe₂O₄ (CFO) nanoparticles and CaFe₂O₄@SiO₂ nanocomposites (CFO@Si) with different amounts of (TEOS) and the effect of silica shell thickness on the physical and magnetic properties of these materials has been made. Nanoparticles (CFO) were first synthesized using the self-combustion sol-gel method, and then their surface was coated using silica and the Stöber sol-gel method. The resulting nanoparticles and nanocomposites were characterized using XRD, FESEM, TEM, AFM, FTIR, BET, BJH, and VSM analyses. The results showed that increasing the TEOS concentration resulted in a thicker silica shell, which increased the dispersion, improved the stability, and prevented the aggregation of the nanocomposite (CFO@Si) compared to the nanoparticles (CFO). It was also found that the magnetic properties of the nanocomposite (CFO@Si) decreased with increasing thickness of the silica shell compared to the nanoparticles (CFO). Consequently, this paper highlights the critical role of TEOS concentration and silica shell thickness in improving the physical and magnetic properties of the nanocomposite (CFO@Si) compared to the nanoparticles (CFO). These findings can help improve the applications of magnetic nanocomposites in various scientific and industrial fields.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100886"},"PeriodicalIF":6.7,"publicationDate":"2025-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143808070","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":"Partially exfoliated graphite oxide and lignin composites for battery electrode materials","authors":"Nagore Izaguirre ,&nbsp;Mikel Alberro ,&nbsp;Xabier Erdocia ,&nbsp;Jalel Labidi","doi":"10.1016/j.jsamd.2025.100887","DOIUrl":"10.1016/j.jsamd.2025.100887","url":null,"abstract":"<div><div>Lignin has garnered significant research attention as a sustainable alternative for various materials and applications. However, its effectiveness as an exfoliating agent and its electrochemical properties have yet to be fully explored and validated. To address this gap, our current study focuses on the synthesis of hybrid materials based on a partial exfoliation of graphite and its oxidized analog, employing a novel method in which the ultrasound (US) forces applied are enhanced by the incorporation of lignin, further promoting the exfoliation. During the synthesis process, graphite layers are separated, and lignin particles are intercalated between these layers, promoting exfoliation. In this study, we incorporated two types of lignin, namely Kraft lignin (KL) and organosolv lignin (OL), and characterized the resulting materials using physicochemical (FTIR, Raman, EA, XRD, and XPS), morphological (AFM, and SEM), and electrochemical (CV and EIS) techniques. The physicochemical and morphological analyses provided substantial evidence supporting the exfoliating capacity of lignins and their deposition on the partially exfoliated surface. Interestingly, the effectiveness of lignins was found to be more pronounced in the case of oxidized graphite (GO) as compared to non-oxidized graphite. This observation was further corroborated by improved electrochemical performances, evidencing the deposition of lignin particles and the exfoliation as positive contributions to enhanced capacity values.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100887"},"PeriodicalIF":6.7,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143808071","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":"Bilayer and clickable electrospun membrane from tailored polyurethanes: a versatile platform for easy surface functionalization.","authors":"Stefano Torresi ,&nbsp;Unai Montejo ,&nbsp;Ana Alonso-Varona ,&nbsp;Nagore Gabilondo ,&nbsp;Arantxa Eceiza","doi":"10.1016/j.jsamd.2025.100884","DOIUrl":"10.1016/j.jsamd.2025.100884","url":null,"abstract":"<div><div>Two biobased linear polyurethanes were synthesized and electrospun to produce a final bilayer nanofibrous membrane. On one side, it was used a thiol-containing composition, PU-SH, while on the other was employed a non-functionalized polyurethane, PU-PD. The bilayer membrane was conceived to be easily functionalized in water, taking advantage of the high reactivity of thiols. The accessibility and reactivity of the PU-SH layer was corroborated by labelling it with a maleimide-functionalized fluorescent molecule, through a thiol-maleimide click reaction. Furthermore, considering the high hydrophobicity and the mechanical strength of PU-PD and the possible functionalization of the PU-SH layer with Ag nanoparticles (AgNPs), preliminary biocompatibility and antimicrobial studies were conducted for its application as wound dressing. The work demonstrated that accurate control of the polymeric backbone chemistry led to customizable membranes by the rapid, green and homogeneous post-functionalization of the nanofibers with surface clickable groups.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 2","pages":"Article 100884"},"PeriodicalIF":6.7,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143791050","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}