Journal of Science: Advanced Materials and Devices最新文献

{"title":"The influence of measuring current on the calculation of anisotropic magnetoresistance in magnetic nanostructures","authors":"Guillermo Gestoso ,&nbsp;David de Cos ,&nbsp;María Luisa Fdez-Gubieda ,&nbsp;Alfredo García-Arribas","doi":"10.1016/j.jsamd.2024.100838","DOIUrl":"10.1016/j.jsamd.2024.100838","url":null,"abstract":"<div><div>Using a multiscale approach, we investigate the influence of measuring current on the calculated anisotropic magnetoresistance of nanostructures, derived from the magnetization configuration obtained with micromagnetic codes. We analyze the subtle implicit assumptions and potentially overlooked approximations inherent in standard procedures that largely disregard the inhomogeneous distribution of electric current within the sample and the magnetic field generated by the current itself. As a preliminary study, we review various methods for determining resistance from the calculated magnetization distribution. We then focus on the impact of non-uniform current distribution arising from variations in resistivity due to different local magnetization orientations. Finally, we assess the significance of the magnetic field produced by the measuring current. For these analyses, we develop self-consistent procedures that iteratively solve the micromagnetic problem using MuMax3 and the Laplace equation with COMSOL Multiphysics. In general, our results validate the standard approach of calculating anisotropic magnetoresistance directly from the angle of the magnetization provided by micromagnetic codes, especially for typical (small) values of the magnetoresistance coefficient. However, we demonstrate that materials with larger AMR coefficients may require more sophisticated calculation methods. An important aspect for comparison with experimental results is the analysis of electrical contacts, where the measuring current can significantly alter the magnetization distribution and, consequently, the magnetoresistance of the nanostructure, even for small AMR coefficients.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100838"},"PeriodicalIF":6.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102321","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}

{"title":"Bio-inspired coatings for natural fibre composites","authors":"Thinesh Sharma Balakrishnan ,&nbsp;Mohamed Thariq Hameed Sultan ,&nbsp;Farah Syazwani Shahar ,&nbsp;Kamarul Arifin Ahmad ,&nbsp;Sharul Sham Dol ,&nbsp;Fatin Hana Naning","doi":"10.1016/j.jsamd.2024.100841","DOIUrl":"10.1016/j.jsamd.2024.100841","url":null,"abstract":"<div><div>Natural fibre composites (NFC) are gaining popularity due to their versatility and environmental benefits, but they often need enhancements to withstand extreme conditions and maintain performance across various applications. Bio-inspired coatings offer a promising solution by mimicking natural systems to develop advanced properties such as self-cleaning, water repellency, thermal regulation, and corrosion resistance. This review examines recent advancements in bio-inspired coatings for NFC, highlighting a range of innovative coatings and their unique properties. We discuss the latest developments, applications, and the specific challenges these coatings address in NFC contexts. Additionally, the review explores future research opportunities, including the integration of emerging technologies like nanotechnology and additive manufacturing. By providing an overview of the current state of bio-inspired coatings for NFC, this review aims to encourage further research and innovation in this rapidly growing field.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100841"},"PeriodicalIF":6.7,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102325","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}

{"title":"Temperature-dependent properties of Cu-doped ZnTe thin films deposited on ultra-thin glass substrates via RF magnetron sputtering","authors":"Nur Irwany Ahmad ,&nbsp;Ahmad Wafi Mahmood Zuhdi ,&nbsp;Camellia Doroody ,&nbsp;Yap Boon Kar ,&nbsp;Mohd Nazri Abd Rahman ,&nbsp;Kazi Sajedur Rahman ,&nbsp;Mohd Natashah Norizan ,&nbsp;Muhammad Najib Harif ,&nbsp;Tiong Sieh Kiong","doi":"10.1016/j.jsamd.2024.100836","DOIUrl":"10.1016/j.jsamd.2024.100836","url":null,"abstract":"<div><div>This study investigates the viability of Cu-doped ZnTe as a potential back surface field (BSF) layer on flexible CdTe thin-film solar cells, examining its structural, morphological, optical, and electrical properties. ZnTe, 5%, and 8% Cu-doped ZnTe were deposited on ultra-thin glass (UTG) substrates using the radio frequency (RF) magnetron sputtering approach at varying substrate temperatures from room temperature to 300 °C. The finding reveals that the surface morphology significantly changes as the substrate temperature increases. Besides, incorporating Cu into ZnTe resulted in a denser and rougher surface, likely due to material densification and accelerated grain growth at higher temperatures. X-ray diffraction (XRD) analysis indicated that the crystallite size of the ZnTe and Cu-doped ZnTe increased with higher temperatures. Optical spectroscopy results demonstrated an increase in the optical band gap of ZnTe with increasing substrate temperature, while Cu-doping introduced a significant variability in the bandgap, particularly at different doping levels. In terms of electrical properties, ZnTe thin films exhibited carrier concentrations around 10¹⁴ cm⁻³. Conversely, the introduction of 5% and 8% Cu into ZnTe increased carrier concentrations, ranging from 10¹⁷ to 10²⁰ cm⁻³, respectively, depending on substrate temperature and the amount of Cu concentration. Introducing Cu in the ZnTe structure may modify the characteristics of ZnTe thin films, potentially influencing its suitability as a BSF layer in CdTe solar cells by affecting its structural, optical, and electrical properties.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100836"},"PeriodicalIF":6.7,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102323","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}

{"title":"Nanosecond laser structuring for improving rate capability of lithium iron phosphate cathode","authors":"Dongkyu Park ,&nbsp;Dongkyoung Lee","doi":"10.1016/j.jsamd.2024.100840","DOIUrl":"10.1016/j.jsamd.2024.100840","url":null,"abstract":"<div><div>LiFePO₄ cathode's low-capacity retention at high current rates is due to its low electrical conductivity. To address this, a three-dimensional cathode was fabricated using a nanosecond laser. Its performance was studied based on groove aspect ratios (0.39, 0.96) and pitch distances (112 μm, 224 μm). Groove morphology varied with laser parameters. Cathodes with higher aspect ratios exhibited lower internal resistance. However, capacity decreased as groove pitch distance narrowed. The normalized specific capacity of the 3D cathode with an aspect ratio of 0.36 and a pitch distance of 224 μm was 6% higher than that of an unstructured cathode at a 2C rate.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100840"},"PeriodicalIF":6.7,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102320","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}

{"title":"Fabrication and wetting characteristics of copper thin film: An active layer for SPR-based sensor applications","authors":"Mohammad Kamal Hossain ,&nbsp;Abdullah Aljishi ,&nbsp;Firoz Khan ,&nbsp;Anwar Ul-Hamid ,&nbsp;Md Mosaddequr Rahman","doi":"10.1016/j.jsamd.2024.100839","DOIUrl":"10.1016/j.jsamd.2024.100839","url":null,"abstract":"<div><div>In this work, a simple and two-step process was demonstrated to develop multifunctional Cu-based thin films that would be suitable for thin film photoactive devices. Cu thin films on quartz glass substrates were prepared using a sputtering technique followed by a thermal treatment. The samples were annealed at high temperatures such as 200, 400, and 600 °C for 2 h in a tubular furnace. Surface morphology and elemental composition were investigated using a high-resolution scanning electron microscope (FESEM) and SEM-aided energy dispersion spectroscopy (EDS), respectively. At high temperatures, the thin films were found to have clusters and voids. Detailed studies on optical properties such as ultraviolet–visible (UV–vis) absorptions, energy band gaps and Urbach energies have been carried out. A red shift in absorption edges (from 464 to 616 nm), a decrease in energy band gaps (from 2.38 to 1.54 eV) and an increase in Urbach energies (from 193 to 272 meV) were observed for those samples annealed at higher temperatures. Sessile drop tests were carried out to find the wetting contact angle (WCA) and to demonstrate the hydrophobicity of the thin film of pristine Cu and those treated at high temperatures. An approximate WCA of 71.9° was determined for the Cu thin film. Following treatment at 200 °C and 400 °C, respectively, the samples' surfaces increased in hydrophobicity by 92.4° and 85.2°. Nevertheless, the same thin film's WCA was decreased and its hydrophilicity increased during additional annealing. Cu-based thin films have been suggested as the active layer in an SPR sensor model, and the spectrum and angular resolved reflectance properties have been thoroughly investigated. At spectral wavelengths of 600, 700, and 800 nm, the optimum thickness of Cu thin film was determined to be 40 nm at SPR angles of 44.7°, 42.7°, and 42.15°.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100839"},"PeriodicalIF":6.7,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102319","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}

{"title":"Ternary Bi2O3/(BiO)2CO3/g-C3N4 multi-heterojunction nanoflakes for highly efficient photocatalytic degradation of dyes and xanthates under visible light","authors":"E. Hashemi,&nbsp;R. Poursalehi,&nbsp;H. Delavari","doi":"10.1016/j.jsamd.2024.100834","DOIUrl":"10.1016/j.jsamd.2024.100834","url":null,"abstract":"<div><div>To enhance the separation efficiency of photogenerated carriers, the formation of photocatalysts with strong interfacial contact heterojunctions is considered an effective approach for the removal of diverse environmental contaminants. In this study, a ternary heterojunction photocatalyst, Bi₂O₃/(BiO)₂CO₃/g-C₃N₄, demonstrated a multifunctional high photocatalytic performance in the degradation of various dyes, including methyl orange (MO), methylene blue (MB), rhodamine B (RB) and xanthates such as potassium ethyl xanthate (PEX), potassium amyl xanthate (PAX) and sodium isopropyl xanthate (SIPX), under visible light irradiation. The Bi₂O₃/(BiO)₂CO₃/g-C₃N₄ photocatalyst was synthesized by heating a mixture of urea and arc discharge synthesized Bi₂O₃-based nanoparticles at 550 °C. This photocatalyst exhibited higher photocatalytic activity compared to Bi₂O₃/(BiO)₂CO₃ and g-C₃N₄. The photocatalysts were characterized and studied by FTIR, XRD, FESEM-EDS elemental mapping, HR-TEM, UV–visible, BET and PL. The formation of an interface between Bi₂O₃/(BiO)₂CO₃ and g-C₃N₄ significantly improved photocatalytic performance by facilitating the effective separation of photogenerated electron-hole pairs. Stability tests of Bi₂O₃/(BiO)₂CO₃/g-C₃N₄ during the degradation of MO demonstrated the photocatalyst's excellent stability and reusability, indicating its potential for practical applications in mineral processing wastewater treatment. Reactive species trapping experiments revealed that holes (h⁺) played the most significant role in photodegradation, followed by hydroxyl radicals (^•OH), while superoxide radicals (^•O₂⁻) had a lesser impact. Study of two possible photocatalytic mechanisms suggested that the transfer of photogenerated carriers in Bi₂O₃/(BiO)₂CO₃/g-C₃N₄ is more likely to follow a double Z-scheme photocatalytic system. The enhanced photocatalytic performance of Bi₂O₃/(BiO)₂CO₃/g-C₃N₄ can be attributed to considerable specific surface area, stronger visible light absorption and most importantly, well-matched band potentials between Bi₂O₃, (BiO)₂CO₃, and g-C₃N₄. The promising photocatalytic performance of Bi₂O₃/(BiO)₂CO₃/g-C₃N₄, introduces a notable photocatalyst for photodegradation of dyes and xanthates in mineral processing wastewater.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100834"},"PeriodicalIF":6.7,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102305","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}

{"title":"Exploring modified cyclodextrins for enhanced encapsulation and release of ethinyl estradiol: Physicochemical characterization and kinetic modeling","authors":"Mehrdad Hadadian,&nbsp;Behnam Mahdavi,&nbsp;Esmail Rezaei-Seresht","doi":"10.1016/j.jsamd.2024.100837","DOIUrl":"10.1016/j.jsamd.2024.100837","url":null,"abstract":"<div><div>Ethinyl estradiol (EE) is a synthetic derivative of steroids that is prescribed for treating sexual diseases. Cyclodextrins (CDs) can enhance the solubility, side effects, and physical characteristics of steroids by the formation of an inclusion complex. This study has aimed to provide a comparison between the encapsulated ethinyl estradiol with carboxymethyl-β-CD (CM-β-CD) and β-CD. For this purpose, different steps of the experiments were monitored using FT-IR, XRD, BET, DLS, and Zeta analyses. The morphology of the prepared inclusion complexes was investigated using FE-SEM imaging that shows nano-sized products with non-spherical structures. The thermal stability of EE and its final compounds were assessed through TGA analysis. In addition, encapsulation efficiency (EE%), phase solubility study, <em>in vitro</em> drug release, and their related kinetic studies were conducted by using the UV–visible spectroscopic method. The obtained data reveals that CM-β-CD/EE has roughly 1.5-fold higher water solubility. Besides, the cumulative release for CM-β-CD/EE was found to be 97%, while it was 46% for β-CD/EE. In contrast, the efficacy of the encapsulation process for β-CD was fairly more impressive than CM-β-CD by 97.5 and 90.62, respectively. Phase solubility kinetic study shows the negative enthalpy by −10.91∗10⁴ J/mol for β-CD/EE and −8.32∗10⁴ for CM-β-CD/EE denoting the favored complexation process and the negative entropy by −2.9∗10² J/mol.K for β-CD/EE and −2.07∗10² J/mol.K for CM-β-CD/EE implying an increase in the order of systems for both complexes. Moreover, the study of the kinetic <em>in vitro</em> drug release exhibits two different mathematical models for products with the same release mechanism, non-Fickian, which is governed by multiple processes.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100837"},"PeriodicalIF":6.7,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143092757","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}

{"title":"Investigation on the microstructure evolution and strengthening behavior of rolled bonding Cu strip","authors":"Jun Cao ,&nbsp;Junchao Zhang ,&nbsp;Huiyi Tang ,&nbsp;Xiaoyu Shen ,&nbsp;Kexing Song ,&nbsp;Yanjun Zhou ,&nbsp;Chengqiang Cui","doi":"10.1016/j.jsamd.2024.100835","DOIUrl":"10.1016/j.jsamd.2024.100835","url":null,"abstract":"<div><div>The relationship and influencing mechanism among the reduction rate, the strengthening behavior and the microstructure evolution of rolled Cu strips were studied. It was found that with the increase of reduction rate, the uneven deformation behavior of the Cu strip was divided into three zones. The grain size in Zone I was refined accompanied by large-scale entangled dislocations, and a nanosheet layered texture was formed. The primary reason for the increase in the strength of the Cu strip is the combined strengthening effect of dislocation, grain boundary and texture, as well as the strengthening effect provided by some lattice friction. The grain orientation exhibited periodic transitions between &lt;110&gt; and &lt;111&gt;, &lt;001&gt;, which provides assistance for grain refinement and dislocation accumulation. The grains in the fracture zone of the Cu strip are elongated and refined during stretching, and flow towards the central axis of the cross-section. The fracture mechanism has shifted from cutting to a chip edge/point to a combined action of multiple mechanisms, which is also accompanied by a gradual increase in the “tearing angle\".</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100835"},"PeriodicalIF":6.7,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102322","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}

{"title":"Tuning of magnetic properties and giant magnetoimpedance effect in multilayered microwires","authors":"R. López Antón ,&nbsp;J.P. Andrés ,&nbsp;J.A. González ,&nbsp;A. García-Gómez ,&nbsp;V. Zhukova ,&nbsp;A. Chizhik ,&nbsp;M. Salaheldeen ,&nbsp;A. Zhukov","doi":"10.1016/j.jsamd.2024.100821","DOIUrl":"10.1016/j.jsamd.2024.100821","url":null,"abstract":"<div><div>We studied the magnetic properties and Giant Magnetoimpedance (GMI) effect in amorphous Co-rich microwires with similar chemical compositions and different diameters with magnetic (Co, Permalloy) and non-magnetic (Cu) layers deposited by magnetic sputtering onto glass-coating. Studies of magnetic properties and GMI effect of as-prepared microwires and the same microwires with deposited magnetic and non-magnetic layers reveal substantial impact of such layers on GMI effect and hysteresis loops. Both as-prepared samples present soft magnetic properties and high GMI effect. The contribution of magnetic layers is observed in hysteresis loop at higher magnetic field, with hysteresis loops similar to those observed in microwires with mixed amorphous-crystalline structure. Meanwhile, both magnetic and non-magnetic layers affect low field hysteresis loops of both samples. Additionally, the GMI ratio, ΔZ/Z, and magnetic field dependences of GMI ratio are substantially affected by the presence of magnetic and non-magnetic layers deposited onto glass-coating. We discussed the observed experimental dependences considering both change of the internal stresses originated by the sputtered layer as well as the magnetostatic interaction between the amorphous ferromagnetic nucleus and deposited magnetic layers.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100821"},"PeriodicalIF":6.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142743194","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}

{"title":"Corrigendum to “Innovative device for in-vivo quantitative assessment of different wire materials using 3D models” [J. Sci.: Adv. Mater. and Dev. (9), Issue 1, March 2024, 100667]","authors":"Mahmoud Sedky Adly ,&nbsp;Aya Sedky Adly ,&nbsp;Afnan Sedky Adly ,&nbsp;Delphine Carayon ,&nbsp;Philippe Bousquet ,&nbsp;Elias Estephan ,&nbsp;Frederic Cuisinier","doi":"10.1016/j.jsamd.2024.100811","DOIUrl":"10.1016/j.jsamd.2024.100811","url":null,"abstract":"","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100811"},"PeriodicalIF":6.7,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143172157","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}