Materials Science and Engineering B-advanced Functional Solid-state Materials最新文献

{"title":"Multi-band DNG metamaterials: A design approach using combined split ring and triple T-resonators","authors":"Elijah Joseph ,&nbsp;Pradeep Kumar ,&nbsp;Thomas Afullo","doi":"10.1016/j.mseb.2024.117794","DOIUrl":"10.1016/j.mseb.2024.117794","url":null,"abstract":"<div><div>In this research, a double negative (DNG) metamaterial is proposed for C, X, and Ku frequency bands applications. The two<span><math><mo>−</mo></math></span>layer DNG metamaterial comprises of a copper resonator patch and a FR<span><math><mo>−</mo></math></span>4 substrate material with a thickness of 1.6 mm. The novel unit cell structure consists of a triple T<span><math><mo>−</mo></math></span>shaped resonator within the square split-ring resonators (SRR). The proposed metamaterial exhibits negative permittivity and permeability for multi-band operation which provides more control of electromagnetic waves for multi-band operation. The presented design resonates at four resonance frequencies of 4.65 GHz, 9.08 GHz, 11.02 GHz, and 12.03 GHz, which is validated through simulations in the CST Microwave Studio and measurements of the fabricated DNG metamaterial. The detailed parametric analysis of the effects of geometric modifications on the S-parameters is presented. An effective medium ratio (EMR) of 6.4 confirms the potential of the proposed metamaterial for practical use, such as in telecommunications, radars, and antennas for achieving advancements in miniaturization, performance improvement, absorption efficiency, radar signature enhancement etc.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering B-advanced Functional Solid-state Materials","volume":"311 ","pages":"Article 117794"},"PeriodicalIF":3.9,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656973","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":"Comprehensive DFT analysis of novel transition metal-based BaTiX3 (X = Cl, Br, I) halide perovskites: Structural, electronic, magnetic, optical, mechanical, and thermodynamic properties","authors":"Muhammad Mubeen Parvaiz ,&nbsp;Adnan Khalil ,&nbsp;Mohammed A. Assiri ,&nbsp;Muhammad Bilal Tahir ,&nbsp;Abdul Hannan ,&nbsp;Muhammad Rafique","doi":"10.1016/j.mseb.2024.117788","DOIUrl":"10.1016/j.mseb.2024.117788","url":null,"abstract":"<div><div>The Ti-based BaTiX₃ (X = Cl, Br, I) halide perovskites are investigated using DFT with the GGA-PBE functional to explore their optical, magnetic, electronic, mechanical, and thermodynamic properties. The electronic band structure and density of states reveal a metallic nature for all compounds, while phonon calculations confirm the thermal stability of BaTiI₃, with no negative lattice vibrational frequencies. Negative formation energies of −4.34, −3.87, and −3.40 eV/atom indicate thermochemical stability. Spin-polarized band structures show non-magnetic behavior. Mechanical stability is verified by Born stability criteria, and anisotropic, ductile behavior is confirmed using the anisotropic factor and Poisson’s ratio. Thermodynamic properties, including enthalpy, entropy, free energy, and heat capacity, are calculated, with zero-point energies of 0.11 eV, 0.07 eV, and 0.18 eV for BaTiX₃. Optical properties reveal all materials are active in the lower energy region. These results provide a comprehensive understanding of BaTiX₃ perovskites for advanced applications.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering B-advanced Functional Solid-state Materials","volume":"311 ","pages":"Article 117788"},"PeriodicalIF":3.9,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656972","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 and characterization of BFO/BTO/TiO2 hybrid nanocomposites as an EMI shielding material in X-band for commercial applications","authors":"P. Harshapriya ,&nbsp;Pawandeep Kaur ,&nbsp;Deepak Basandrai","doi":"10.1016/j.mseb.2024.117805","DOIUrl":"10.1016/j.mseb.2024.117805","url":null,"abstract":"<div><div>The mechanical blending method was applied to generate BiFeO₃/Bi₄Ti₃O₁₂/TiO₂, Bi_0.8La_0.₂Fe_0.8Ag_0.2O₃/Bi_3.8La_0.2Ti_2.8Ag_0.2O₁₂/TiO₂, and Bi_0.Ya_0.2Fe_0.8Ag_0.2O₃/Bi_3.8Y_0.2Ti_2.8Ag_0.2O₁₂/TiO₂.The structural investigation shows that titanate microparticles and bismuth ferrite nanoparticles were successfully absorbed into the titanium dioxide matrix, and the purity is evaluated by XRD and EDAX analysis. When a dopant is added, the particle size and crystallite size decrease, promoting the produced composites’ energy band gap. The magnetic property shows that when a dopant is added, the magnetic saturation (M_s) and remnant magnetization (M_r) increase. The coercivity (H_C) of BBTL increases as compared to BBT, and the H_c of BBTY decreases dramatically. At 8.5 GHz, sample BBTL has a maximum reflection loss of −25.8 dB due to its matching thickness of 2.1 mm. Also, BBTY has a maximum total shielding effectiveness (SE_T) of 24.15 dB at 11.39 GHz, with a matching 1.8 mm thickness, making it ideal for EMI shielding material.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering B-advanced Functional Solid-state Materials","volume":"311 ","pages":"Article 117805"},"PeriodicalIF":3.9,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656971","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":"In-situ exsolution super-excess Ni metal anchoring on Ba2V0.4Fe0.9Mo0.7O6−δ using as high catalytic activity solid oxide fuel cell composite anode","authors":"Wang Liu,&nbsp;Lemei Song,&nbsp;Yuanhui Su,&nbsp;Yu Huan,&nbsp;Tao Wei","doi":"10.1016/j.mseb.2024.117809","DOIUrl":"10.1016/j.mseb.2024.117809","url":null,"abstract":"<div><div>Perovskite materials, such as Ba₂FeMoO_6−δ using as Solid oxide fuel cells (SOFCs) anodes have shown excellent anti-carbon deposition to catalyze hydrocarbon fuel gases. However, the perovskite-based anodes still show insufficient catalytic activity and conductivity, which restricted for achieving highest SOFC power output. In this work, a Ni super-excess Ba₂V_0.4Fe_0.9Mo_0.7O_6−δ-Ni_x (BVFMO-Ni_x, x = 0, 0.2, 0.4, 0.6) composite anode was first synthesized by in-situ exsolving FeNi₃ alloy nanoparticles and firmly anchoring on the surface of parent BVFMO, which shows obvious improvement in conductivity and catalytic activity for methane fuel gas. When BVFMO-Ni_0.4 is subjected to methane reforming for hydrogen production, the conversion rate reaches 56 % at 750 °C and remains above 50 % for more than 640 h continue test. Using BVFMO-Ni_0.4 as a single-cell composite anode and testing at 850 °C, the maximum power outputs reach 991 mW cm⁻² and 578 mW cm⁻² with hydrogen and methane as fuel gas, respectively.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering B-advanced Functional Solid-state Materials","volume":"311 ","pages":"Article 117809"},"PeriodicalIF":3.9,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657042","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":"Performance improvement of MoS2/graphene heterostructures based FET by tuning mobility and threshold voltage using APTES","authors":"Umer Ahsan ,&nbsp;Abdul Sattar ,&nbsp;Muhammad Irfan ,&nbsp;Hina Mustafa ,&nbsp;Hamid Latif ,&nbsp;Muhammad Ammar Sabar ,&nbsp;Maria Mustafa ,&nbsp;Raja Junaid Amjad ,&nbsp;Ahmad Wadood ,&nbsp;Zeeshan Ali","doi":"10.1016/j.mseb.2024.117797","DOIUrl":"10.1016/j.mseb.2024.117797","url":null,"abstract":"<div><div>2D materials have been intensively explored because of their remarkable electrical properties, with a special focus devoted to the fabrication of lateral heterostructures. Two-dimensional materials like molybdenum disulphide (MoS₂) have been shown to make field effect transistors (FETs) with high current on–off ratios. However, carrier mobility in back gate MoS₂ FETs is often low<!--> <!-->(0.5–20 cm²/Vs), which limits the overall device performance. Here, we report a novel low Schottky barrier transistor based on graphene, MoS2 and Self-assembled monolayer (SAMS) that utilizes vertical heterostructures in which the channel is composed of MoS₂/graphene vertical heterostructures that uses graphene as the electrodes. Self-assembled monolayers of Aminopropyltriethoxysilane (APTES) serve a dual purpose, used for passivation and as an n-type dopant for MoS₂, significantly improving the electrical properties.</div><div>Our experimental and theoretical results show that, with the deposition of APTES on the substrate, there is an increase in mobility from <strong>103</strong> to <strong>135 cm²/Vs</strong>, along with the reduction in the threshold voltage from <strong>5.04</strong> to <strong>1.05 V</strong>, which is attributed to APTES passivation, which prevents electron trapping and de-trapping, a significant factor determining variation in threshold voltage (ΔV_TH). Density functional theory (DFT) calculations support the experimental results and demonstrate that the introduction of APTES doping in MoS₂ induces n-type doping in the material, hence improving the performance of the device. The combination of graphene electrodes along with the APTES passivation<!--> <!-->on substrate<!--> <!-->holds the promise for reliable and efficient synaptic applications in neuromorphic computing technologies, as well as next-generation complementary logic devices.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering B-advanced Functional Solid-state Materials","volume":"311 ","pages":"Article 117797"},"PeriodicalIF":3.9,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657039","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":"Development of Mn-doped SmCoO3 electrode material for supercapacitor application","authors":"Muhammad Fakhar Shehzad ,&nbsp;Ashraf M.M. Abdelbacki ,&nbsp;Jawaria Fatima ,&nbsp;Abhinav Kumar ,&nbsp;Mahmood Ali ,&nbsp;Jatinder Kaur","doi":"10.1016/j.mseb.2024.117795","DOIUrl":"10.1016/j.mseb.2024.117795","url":null,"abstract":"<div><div>The rapid use of fossil fuels has resulted in a reduction of energy reserves and raised environmental pollution. Nonetheless, quickly developing<!--> <!-->alternate, sustainable energy sources and storage technologies is crucial. The present study describes the hydrothermal synthesis to produce pure SmCoO₃ and Mn-doped SmCoO₃for supercapacitor application. To determine the electrochemical capabilities, morphology and structure of SmCoO₃ using physical and electrochemical techniques were studied before and after manganese doping. The specific capacitance of Mn-doped SmCoO₃ and pure SmCoO₃ are 1385.3 F/g and 633.7 F/g as well as energy density is 45.9 Wh/kg and 20.6 Wh/kg at 1 A/g, respectively. These findings illustrate that Mn-doped SmCoO₃ is a preferred electrode material for supercapacitors. Electrochemical impedance spectroscopy suggests that the doped material has values of 0.10 Ω and 0.60 Ω for solution and charger transfer resistance, correspondingly and even after the 5000th<!--> <!-->cycles, the electrode material demonstrated cycling stability. In conclusion, the material’s electrochemical performance confirms its intriguing qualities as an energy storage supercapacitor. Therefore, Mn-doped SmCoO₃ <!-->has been presented as material for electrodes for utilization in next-generation supercapacitors.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering B-advanced Functional Solid-state Materials","volume":"311 ","pages":"Article 117795"},"PeriodicalIF":3.9,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657060","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":"In-situ treated ZnO/Fe2O3 nanocomposites synthesized via microwave for enhanced Photo-Fenton photocatalysis and antimicrobial efficacy","authors":"Velu Manikandan ,&nbsp;Duraisamy Elango ,&nbsp;Velu Subash ,&nbsp;Palaniyappan Jayanthi ,&nbsp;Mysoon M. Al-Ansari ,&nbsp;Saurav Dixit ,&nbsp;Subhav Singh ,&nbsp;Seemaisamy Revathi ,&nbsp;Sutikno Sutikno ,&nbsp;Kwang Soup Song","doi":"10.1016/j.mseb.2024.117779","DOIUrl":"10.1016/j.mseb.2024.117779","url":null,"abstract":"<div><div>The development of effective and cost-efficient photocatalysts is crucial for wastewater treatment. This study aimed to synthesize and evaluate ZnO/Fe₂O₃ nanocomposites (ZnFe NCs) as novel photocatalysts for the removal of organic contaminates. We synthesized ZnFe NCs using a simple, environmentally friendly microwave-assisted method. Characterization was conducted using HR-TEM, SEM-EDS, XPS, and X-ray diffraction. The photocatalytic performance was evaluated with methylene blue (MB) and orange II (O-II) dyes, showing that ZnFe NCs with H₂O₂ achieved 98.2 % dye removal under 120 min of sunlight. This performance surpassed that of controls, including ZnO, Fe₂O₃, and ZnO/Fe₂O₃ alone. The study also determined optimal conditions for the photocatalysts, demonstrating enhanced photocatalytic activity. Antibacterial tests showed inhibition zones of 22 mm against <em>Staphylococcus aureus</em> (<em>S. aureus</em>) and 20 mm against <em>Escherichia coli</em> (<em>E. coli</em>) at 100 mg/mL. ZnFe NCs show dual potential for photocatalytic degradation and antimicrobial activity, ideal for wastewater treatment and microbial control.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering B-advanced Functional Solid-state Materials","volume":"311 ","pages":"Article 117779"},"PeriodicalIF":3.9,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657049","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":"PMMA-Au@YAG:Ce phosphor deposited on flexible substrate for white light emitting devices","authors":"Vasilica Ţucureanu,&nbsp;Cosmin Romanițan,&nbsp;Iuliana Mihalache,&nbsp;Alina Matei","doi":"10.1016/j.mseb.2024.117808","DOIUrl":"10.1016/j.mseb.2024.117808","url":null,"abstract":"<div><div>This paper investigates the possibility to obtain yttrium aluminum garnet doped with cerium ions (YAG:Ce) phosphor, improve the emissive properties by modification with metal nanoparticles, followed by embedding into the polymer matrix, and deposition of nanocomposite on a flexible substrate to produce the white light by excitation with a blue chip. YAG:Ce yellow phosphor was obtained by a modified solid-state process, followed by in-situ anchoring of gold nanoparticles (Au@YAG). To deposit the phosphor on the flexible substrate, the Au@YAG nanocomposite was embedded in a poly(methyl methacrylate) (PMMA) matrix using the ex-situ method. The quality of the phosphor particles and composites was studied using FTIR spectroscopy, X-ray diffraction, and fluorescence spectroscopy. The applicability of the developed materials and the efficiency of methods were confirmed by the photometric studies performed on the composite film to determine the chromaticity coordinates, leading to the parameters of the semiconductor device that generates cold white light.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering B-advanced Functional Solid-state Materials","volume":"311 ","pages":"Article 117808"},"PeriodicalIF":3.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657046","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":"High-performance cold-source field-effect transistors based on Cd3C2/ boron phosphide heterojunction","authors":"Zelong Ma ,&nbsp;Danni Wang ,&nbsp;Songyang Li ,&nbsp;Jingjun Chen ,&nbsp;Xu Li ,&nbsp;Baoan Bian ,&nbsp;Bin Liao","doi":"10.1016/j.mseb.2024.117804","DOIUrl":"10.1016/j.mseb.2024.117804","url":null,"abstract":"<div><div>To overcome the short-channel effect and large gate leakage current in the field-effect transistors (FETs), some cold-source materials have been suggested as alternative materials. We explore the performance of FET based on the cold-source material Cd₃C₂ using the ab initio quantum transport method. It is shown that the figure of merits (FOMs) of Cd₃C₂/ Boron phosphide (BP) FET satisfies the requirements of ITRS2028 HP for UL=2 and UL=3nm. The performance of Cd₃C₂/BP FET is improved when Cd₃C₂ is p-type doped. Doping causes a super-exponential decrease in carrier concentration, thus the cold-source FET based on Cd₃C₂/BP is formed. When the doping concentration reaches 10.0 × 10¹³cm⁻², the device satisfies the requirements of ITRS2028 HP. More importantly, at the doping concentration of 10.0 × 10¹³cm⁻² for UL=2 and 3 nm, the subthreshold swings are 52.32 and 56.84 mV/dec, which are lower than 60 mV/dec. This work proposes a new cold-source FET based on Cd₃C₂/BP, whose excellent performance can make it a competitive candidate in future electronic devices.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering B-advanced Functional Solid-state Materials","volume":"311 ","pages":"Article 117804"},"PeriodicalIF":3.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657047","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":"Enhanced plasmonic performance of TiO2 derived TiN films via gas nitridation","authors":"Liya Tony ,&nbsp;I. Packia Selvam ,&nbsp;Sandip Dhara ,&nbsp;S.N. Potty","doi":"10.1016/j.mseb.2024.117807","DOIUrl":"10.1016/j.mseb.2024.117807","url":null,"abstract":"<div><div>This study demonstrates a cost-effective method for planar titanium nitride plasmonic film by nitriding spin-coated TiO₂ in ammonia atmosphere. The effect of nitridation temperature on the structural, morphological, electrical and optical characteristics of the coated films were investigated. The films exhibited high carrier concentration of 1022/cc with significant reduction in resistivity of more than three order of magnitude, indicating the conversion to the nitride phase. Negative permittivity, crucial for plasmonic applications in the visible wavelength region, was verified for wavelengths &gt; 463 nm using Drude-Lorentz model. A three-layer model was employed to verify the material’s plasmonic behaviour. The straightforward fabrication route, which combines spin-coating and ammonia nitridation at 950 °C, offers a new approach for titanium nitride films for plasmonic based gas and biosensing device applications in the visible region. In addition, for fabricating titanium nitride coatings for applications that require abrasion resistance, electrical conductivity, chemical stability, and biocompatibility.</div></div>","PeriodicalId":18233,"journal":{"name":"Materials Science and Engineering B-advanced Functional Solid-state Materials","volume":"311 ","pages":"Article 117807"},"PeriodicalIF":3.9,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142657048","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}