Journal of Science: Advanced Materials and Devices最新文献

{"title":"Temperature-dependent properties of Cu-doped ZnTe thin films deposited on SLG substrates via RF magnetron sputtering and E-beam techniques","authors":"Sherif Salah ,&nbsp;Camellia Doroody ,&nbsp;Fazliyana ‘Izzati Za'abar ,&nbsp;Zheng-Jie Feng ,&nbsp;Prajindra Sankar Krishnan ,&nbsp;Ahmad Wafi Mahmood Zuhdi ,&nbsp;Muhammad Najib Harif ,&nbsp;Nur Irwany Ahmad ,&nbsp;Yap Boon Kar ,&nbsp;Mohammad Nur-E-Alam","doi":"10.1016/j.jsamd.2025.100944","DOIUrl":"10.1016/j.jsamd.2025.100944","url":null,"abstract":"<div><div>Copper doping in zinc telluride (ZnTe) thin films has been extensively studied for optoelectronic applications; however, challenges remain in optimizing temperature-dependent diffusion while minimizing defect-related emissions. Although numerous studies have explored Cu-doped ZnTe, comprehensive investigations using electron-beam (E-beam) evaporation remain limited, especially concerning its influence on diffusion dynamics, defect formation, and electrical properties. This study systematically examined Cu-doped ZnTe films fabricated via E-beam evaporation with a fixed 50 nm Cu layer deposited at three substrate temperatures (RT, 150 °C, and 300 °C), followed by rapid thermal annealing (RTA) at 100 °C and 200 °C for 1 h under a nitrogen atmosphere. An as-cast (non-annealed) sample was also analyzed as a baseline reference. By investigating the interplay between deposition and annealing temperatures, this work provided new insights into temperature-driven diffusion control mechanisms and their influence on the structural, morphological, and electrical properties of ZnTe: Cu films. The optimal sample (ZT-Cu_150_A200) exhibited a carrier concentration of 1.33 × 10²⁰ cm⁻³, a resistivity of 3.77 × 10⁻⁵ Ω cm, and a mobility of 1.68 × 10³ cm²/V·s, significantly improving electrical conductivity while minimizing defect-related losses. These findings establish a crucial correlation between thermal activation, Cu diffusion dynamics, and defect passivation, offering a refined approach for optimizing Cu-doped ZnTe thin films for enhanced electronic performance.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100944"},"PeriodicalIF":6.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144605905","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":"Two-dimensional SiC-based heterostructures for advanced lithium-ion batteries: A first-principles study","authors":"Wanjun Yan ,&nbsp;Xin Tang ,&nbsp;Yutao Liu ,&nbsp;Tinghong Gao ,&nbsp;Fuhong Ren ,&nbsp;Nan Wang ,&nbsp;Guiyang Liu","doi":"10.1016/j.jsamd.2025.100946","DOIUrl":"10.1016/j.jsamd.2025.100946","url":null,"abstract":"<div><div>The integration of two-dimensional (2D) materials into heterostructures provides an effective approach to designing advanced electronic devices by synergistically combining the advantages of constituent monolayers. In this study, we employ density functional theory (DFT) to systematically evaluate three SiC-based heterostructures (SiC/graphene, SiC/BN, and SiC/MoS₂) as high-performance anode candidates for lithium-ion batteries. To assess the potential of these SiC-based heterostructures, their geometric structures, electronic structures, Li adsorption and migration properties, and electrochemical properties were investigated. Results illustrate that these heterostructures exhibit enhanced mechanical robustness, with Young's modulus surpassing that of individual monolayers. Ab initio molecular dynamics (AIMD) simulations reveal that these SiC-based heterostructures can maintain good structural stability during lithiation at 300 K. With the introduction of other 2D anode materials, the lithiated SiC-based heterostructures exhibit enhanced electrical conductivity, high theoretical specific capacity, and acceptable diffusion barriers, which are crucial for maintaining high multiplicity performance of lithium-ion batteries. These findings indicate the remarkable potential of SiC-based heterostructures as ideal anode materials for lithium-ion batteries.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100946"},"PeriodicalIF":6.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579576","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":"Effect of interface and configuration on dynamic mechanical properties of bilayer B4C/Al composites","authors":"Tian Luo ,&nbsp;Zhenlong Chao ,&nbsp;Longtao Jiang ,&nbsp;Shengpeng Chen ,&nbsp;Siyun Li ,&nbsp;Yanxiong Meng ,&nbsp;Huimin Han ,&nbsp;Shanqi Du ,&nbsp;Bingzhuo Han ,&nbsp;Runwei Zhang ,&nbsp;Mingqi Liu ,&nbsp;Guoqin Chen","doi":"10.1016/j.jsamd.2025.100941","DOIUrl":"10.1016/j.jsamd.2025.100941","url":null,"abstract":"<div><div>Layered materials have gained widespread attention in armor protection due to their unique designability, structure-function integration, and cross-scale synergistic effects. The interface and material configuration are key determinants of the dynamic mechanical properties of layered materials. This study focuses on these factors by fabricating bilayer B₄C/Al composites with a continuous aluminum matrix and varying reinforcement content gradients. The resulting bilayer structure exhibited an interfacial tensile strength of up to 326 MPa, significantly surpassing the bonding strength of epoxy resin. Under dynamic loading, the continuous matrix structure demonstrated superior compressive strength and energy absorption capacity, due to efficient strain transfer and coordinated deformation facilitated by strong interfacial bonding, which enhanced the synergy between layers. Digital image correlation (DIC) analysis revealed that the strain transfer efficiency near the interface in the continuous matrix structure reached 78 %, markedly higher than the 19 % observed in bonded structures. Finite element simulations further elucidated the influence of reinforcement gradients on stress-strain distribution and failure mechanisms. A larger reinforcement gradient intensified strain mismatch near the interface, inducing premature shear failure in the hard layer due to transverse volumetric expansion. For optimal material configurations, the compressive strength of the soft layer should exceed the yield strength of the hard layer to facilitate plastic zone expansion during compression and promote continuous strain hardening. These findings highlight the critical role of interface design and structural configuration in governing the dynamic mechanical performance of layered materials.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100941"},"PeriodicalIF":6.7,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524265","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":"TiO2/SnO2 photocatalysts by electrospinning and atomic layer deposition for pharmaceutical contaminant removal","authors":"Tia Maria Howayek ,&nbsp;Mahmoud Abid ,&nbsp;Haitham Maslouh ,&nbsp;Roman Viter ,&nbsp;Djamel Bezzerga ,&nbsp;Jisang Hong ,&nbsp;Amr A. Nada ,&nbsp;Marc Cretin ,&nbsp;Igor Iatsunskyi ,&nbsp;Emerson Coy ,&nbsp;Loïc Assaud ,&nbsp;David Cornu ,&nbsp;Roland Habchi ,&nbsp;Mikhael Bechelany","doi":"10.1016/j.jsamd.2025.100945","DOIUrl":"10.1016/j.jsamd.2025.100945","url":null,"abstract":"<div><div>Advanced technologies, including photocatalysis, are required to address the increasing global need for clean water. Titanium dioxide (TiO₂) is often used as a photocatalyst for pollutant removal, but its performance is hampered by its large band gap and fast charge carrier recombination. This study describes the synthesis, characterization, and photocatalytic performance of TiO₂/tin oxide (SnO₂) core-shell nanofibers for the degradation of acetaminophen (ACT), a persistent pharmaceutical pollutant. TiO₂ nanofibers, fabricated by electrospinning, were coated with thin SnO₂ films by atomic layer deposition (ALD). After their structural, morphological, and chemical characterization, TiO₂ and TiO₂/SnO₂ composites were tested as photocatalysts to degrade ACT under UV light. Within 40 min, 99.8 % and 70 % of ACT was degraded in the presence of the optimal TiO₂/SnO₂ composite (SnO₂ layer thickness of 5 nm) and of TiO₂ nanofibers, respectively. Moreover, the optimal TiO₂/SnO₂ composite showed excellent recyclability and stability over five consecutive cycles. Hydroxyl radicals (^•OH), superoxide anions (^•O₂⁻), and holes (h⁺) were the main reactive species implicated in ACT removal. Density functional theory (DFT) modeling confirmed that the band alignment between TiO₂ and SnO₂ enhanced charge separation. This study demonstrates that TiO₂/SnO₂ is a promising photocatalyst for removing pharmaceutical contaminants from the environment.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100945"},"PeriodicalIF":6.7,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579574","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":"Photopolymerized low-swelling hydrogels incorporating Mo-MXenes for EMI shielding applications","authors":"Gabriela Toader ,&nbsp;Martino Aldrigo ,&nbsp;Sergiu Iordănescu ,&nbsp;Alexandra Mocanu ,&nbsp;Oana Brincoveanu ,&nbsp;Cosmin Romanitan ,&nbsp;Traian Rotariu ,&nbsp;Elena-Andreea Moldovan ,&nbsp;Bogdan Trica ,&nbsp;Ana Mihaela Gavrila ,&nbsp;Edina Rusen ,&nbsp;Aurel Diacon","doi":"10.1016/j.jsamd.2025.100938","DOIUrl":"10.1016/j.jsamd.2025.100938","url":null,"abstract":"<div><div>The advancement of compact, durable, and highly integrated electronics dictates the need for effective shielding from electromagnetic interference (EMI). This study was focused on the synthesis and characterization of hydrogels designed for EMI shielding applications obtained by a straightforward photopolymerization-based strategy. Different concentrations of Mo₂Ti₂AlC3 (0.1 %, 0.2 %, and 0.4 wt %), and polypyrrole particles, which serve as electroconductive components, were incorporated into hydrogels with a semi-interpenetrated polymer network (sIPN) resulting from the photopolymerization of hydroxyethyl methacrylate (HEMA) and acrylic acid (AA) in the presence of polyvinyl alcohol (PVA). Ultrasonication pretreatment of Mo₂TiAlC₃ in polyvinyl alcohol improved intercalation and ensured uniform integration into hydrogel films. Characterization techniques, including SEM, TEM, FT-IR, mechanical tests, TGA, XRD, and EMI shielding measurements, provided valuable insights into the properties and performance of the MXenes-based hydrogels. These hydrogels exhibited high gel fraction values (&gt;98 %) and reduced swelling, indicating an increased crosslinking density. The optimal dispersion of MXenes (0.1–0.2 wt %) in the hydrogel matrix resulted in enhanced mechanical performance and effective EMI shielding, with the Hgel-MX-0.1 % sample displaying the best EMI shielding efficiency. The presence of water in the hydrogels ensures uniform conductivity throughout the composite hydrogel matrix. This innovative approach highlights the potential of flexible materials like MXenes-based hydrogels for advanced technological applications, offering superior viscoelastic properties, mechanical stability, and effective EMI shielding.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100938"},"PeriodicalIF":6.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144534624","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":"Cr2O3-graphene nanocomposites for high-performance supercapacitors and methylene blue degradation: Synthesis and electrochemical analysis","authors":"Muhammad Asim ,&nbsp;Javed Iqbal ,&nbsp;Bilal Islam ,&nbsp;Javaria Bashir ,&nbsp;Nabeel Maqsood ,&nbsp;Kateřina Skotnicová ,&nbsp;Ahmad Nawaz","doi":"10.1016/j.jsamd.2025.100939","DOIUrl":"10.1016/j.jsamd.2025.100939","url":null,"abstract":"<div><div>This study aims to enhance the photocatalytic performance of chromium oxide (Cr₂O₃) by incorporating graphene nanoplatelets (GNPs) to form Cr₂O₃/GNPs nanocomposites. Pristine Cr₂O₃, GNPs, and Cr₂O₃/GNPs nanocomposites were synthesized using a cost-effective ex-situ co-precipitation method at different stoichiometric ratios (7:3), (2:3), and (1:9). Structural characterization via X-ray diffraction and Raman spectroscopy confirmed that Cr₂O₃ retained its rhombohedral phase across all compositions, with no evidence of phase transformation. A significant reduction in crystallite size by 50.0 %, 58.4 %, and 72.45 % was observed for the 7:3, 2:3, and 1:9 compositions, respectively, relative to pristine Cr₂O₃. Photocatalytic experiments revealed that the Cr₂O₃/GNPs (1:9) nanocomposite exhibited the highest methylene blue dye degradation efficiency, attributed to defect-induced charge separation and enhanced interfacial electron transport. The rate constant (k_app) and C/C₀ ratio further validated this optimal composition, as UV–Vis spectroscopy demonstrated a substantial decrease in MB absorption intensity, signifying efficient dye removal. Electrochemical investigations using cyclic voltammetry, galvanostatic charge-discharge (GCD), and electrochemical impedance spectroscopy confirmed the superior energy storage properties of the Cr₂O₃/GNPs (1:9) nanocomposite, which exhibited the highest specific capacitance (462.2 F/g) and the lowest equivalent series resistance (6Ω). The synergistic 2D interfacial interactions between Cr₂O₃ and GNPs facilitated rapid charge transport, efficient electron-hole separation, and enhanced ionic conductivity, making this nanocomposite a promising candidate for both environmental remediation (wastewater treatment) and energy storage (supercapacitor) applications.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100939"},"PeriodicalIF":6.7,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144518284","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":"Exploring optimal TMDC multi-channel GAA-FET architectures at sub-1nm nodes","authors":"Junyeol Lee ,&nbsp;Hanggyo Jung ,&nbsp;Donghyun Jin ,&nbsp;Jongwook Jeon","doi":"10.1016/j.jsamd.2025.100931","DOIUrl":"10.1016/j.jsamd.2025.100931","url":null,"abstract":"<div><div>This paper explores the design and optimization of multi-Nanosheet Field-Effect Transistors (mNS-FETs) employing a Transition Metal Dichalcogenide (TMDC) channel, specifically MoS₂, for the 0.7 nm technology node using calibrated Technology Computer-Aided Design (TCAD) simulations. A comprehensive analysis is conducted at both the device and circuit levels, considering various structural parameters such as the number of MoS₂ layers, vertical and lateral nanosheet stacking configurations, and nanosheet widths. To enable more effective structural optimization, the resistance and capacitance components of the device are carefully segmented, providing a detailed framework for design refinements. The results indicate that a trilayer configuration outperforms its monolayer counterpart by reducing external resistance through an increased surface area, making it the preferred option at a 12 nm gate length. This observation also elucidates the advantage of single lateral stacking over double lateral stacking. While vertical stacking increases the effective width for on-current enhancement, excessive stacking compromises switching speed at the same power level, identifying four vertical stack structures as the optimal configuration. Among the evaluated configurations, the trilayer MoS₂ mNS-FET with four vertical stacks, single lateral stacking, and a 17 nm nanosheet width was identified as the optimal structure for the 0.7 nm node. Furthermore, at the circuit level, the effective width is evaluated to ensure compliance with the circuit area constraints of the target technology node. Analyzing the impact of parasitic resistance and capacitance in the Middle-of-Line (MOL) and Back-End-of-Line (BEOL) reveals that time delay can lead to up to a 58 % degradation in inverter circuit performance. By systematically investigating the impact of MoS₂-based mNS-FET structures, this study provides critical insights to guide the future design of TMDC-based mNS-FETs.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100931"},"PeriodicalIF":6.7,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144588296","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":"Ultrasensitive and rapid fluorescence immunoassay for Listeria monocytogenes detection using size-compatible magnetic beads and core-shell quantum dots","authors":"Hien Thi Le ,&nbsp;Huyen Thi Vu ,&nbsp;Nga Thi Huyen Tran ,&nbsp;Hung-Vu Tran","doi":"10.1016/j.jsamd.2025.100936","DOIUrl":"10.1016/j.jsamd.2025.100936","url":null,"abstract":"<div><div>A rapid and ultrasensitive fluorescence immunoassay for <em>Listeria monocytogenes</em> detection was developed by integrating antibody-conjugated magnetic beads (MBs-Ab1) and core–shell CdSe@ZnS quantum dots (QDs-Ab2). Covalent conjugation methods ensured stable antibody immobilization while preserving the structural and optical properties of the carriers. The ∼1 μm magnetic beads demonstrated superior capture efficiency (∼96 % in 10 min) and high specificity against <em>L. monocytogenes</em>. Core–shell QDs enabled robust fluorescence signaling with a sharp emission at ∼555 nm. The assay achieved a linear response over 1–10⁴ CFU/mL and an exceptional limit of detection of 0.26 CFU/mL, surpassing existing fluorescence-based methods. The total assay time was only 35 min. High reproducibility and minimal background fluorescence further confirmed the system's analytical reliability. This performance is attributed to compatible particle size, covalent conjugation chemistry, high quantum yield fluorophores, and efficient magnetic separation. Future efforts will focus on enhancing the long-term stability of the bioconjugates and validating assay performance using complex real-world samples—critical steps toward translating this proof-of-concept into a practical diagnostic platform.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100936"},"PeriodicalIF":6.7,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144489701","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":"Subthreshold and reverse bias model of graphene/p-type silicon Schottky diodes","authors":"Katty Beltrán ,&nbsp;Jhon Paredes ,&nbsp;F. Javier Torres ,&nbsp;Alfredo Sánchez ,&nbsp;César Zambrano ,&nbsp;Maurizio Casalino ,&nbsp;Paul Prócel ,&nbsp;Olindo Isabella ,&nbsp;Luis Miguel Prócel","doi":"10.1016/j.jsamd.2025.100925","DOIUrl":"10.1016/j.jsamd.2025.100925","url":null,"abstract":"<div><div>This work presents a novel approach to studying, simulating, and modeling the graphene–silicon interface in Schottky diodes by integrating quantum-mechanical and device-level analyses. Such devices hold great performance potential in photodetecting, energy-harvesting, and sensing applications. Quantum-mechanical calculations determine key structural and electronic properties, such as the work function and effective mass, which are critical for understanding the interface’s behavior. These parameters are then incorporated into finite-element simulations, solving the Poisson and Continuity equations to develop a subthreshold and reverse bias model for the graphene/p-type silicon Schottky device. The model characterizes J–V curves, identifying dominant electron transport mechanisms like thermionic emission and diffusion at varying recombination velocities. It also sheds light on the image-force lowering effect, which significantly impacts current density, especially under reverse bias conditions, by modulating the Schottky barrier height.</div><div>The model is validated by comparing the model with experimental data from graphene–silicon photodetectors, demonstrating its accuracy in predicting device performance. This approach offers valuable insights into optimizing any kind of Schottky diodes. By effectively bridging quantum-mechanical theory with practical device performance, the model proves to be a powerful tool for designing advanced semiconductor devices with enhanced efficiency and functionality, ensuring consistency from the atomistic to the device level.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100925"},"PeriodicalIF":6.7,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144471656","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":"Lightweight and broadband NiO/Ni/borophene foams for enhanced electromagnetic wave attenuation","authors":"Wala Dizayee ,&nbsp;Mohammed Ahmed Mohammed ,&nbsp;Mohammed Zorah ,&nbsp;HassabAlla M.A. Mahmoud ,&nbsp;Mohamed Shabbir Abdulnabi ,&nbsp;G. Abdulkareem-Alsultan ,&nbsp;Maadh Fawzi Nassar","doi":"10.1016/j.jsamd.2025.100934","DOIUrl":"10.1016/j.jsamd.2025.100934","url":null,"abstract":"<div><div>The development of high-performance microwave absorbing materials poses a significant challenge due to the complex balance required between dielectric and magnetic losses, structural integrity, and impedance matching. Conventional NiO/Ni composites, though promising, face several limitations Nickel demonstrates significant magnetic loss but inadequate impedance matching, whereas nickel oxide, functioning as a dielectric, provides minimal attenuation and restricted conductivity. Moreover, particle aggregation, elevated material density, and limited absorption bandwidth further constrain their utility in contemporary electromagnetic interference (EMI) shielding systems. This study presents a unique 3D hierarchical NiO/Ni/Borophene (NNB) nanocomposite synthesized by a scalable, solution-based method to address these inherent limitations. Borophene, a lightweight, metallic, and anisotropically conductive two-dimensional substance, serves as a structural and functional enhancer. Its integration accelerates charge transport, increases dielectric loss through interfacial polarization, and facilitates impedance matching by reducing excessive conductivity. The freeze-dried design presents a foam-like structure that enhances multiple scattering and effectively attenuates incident waves. Of the compositions analyzed, NNB-20 (20 wt % borophene) demonstrated superior performance, with a minimum reflection loss of −55.5 dB at 12.8 GHz and a wide absorption bandwidth. This study emphasizes borophene's synergistic roles in overcoming the limitations of traditional NiO/Ni systems, establishing NNB nanocomposites as a novel category of lightweight, broadband, and high-efficiency microwave absorbers for sophisticated EMI shielding applications.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 3","pages":"Article 100934"},"PeriodicalIF":6.7,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144364612","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}