Journal of Science: Advanced Materials and Devices最新文献

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Unravelling the monomer molar ratio modulation of the optoelectronics of Poly(propylene imine) tetra(thiophen-2-ylmethylene-amine)-co-poly(3-hexylthiophene-2,5-diyl) copolymer 揭示聚(丙亚胺)四(噻吩-2-基亚甲基胺)-共聚(3-己基噻吩-2,5-二基)共聚物的单体摩尔比对光电子学的影响
IF 6.7 3区 材料科学
Journal of Science: Advanced Materials and Devices Pub Date : 2024-11-19 DOI: 10.1016/j.jsamd.2024.100816
Morongwa E. Ramoroka , Kelechi C. Nwambaekwe , Hayelom H. Tesfay , Miranda M. Ndipingwi , Vivian S. John-Denk , Kwena D. Modibane , Samantha F. Douman , Emmanuel I. Iwuoha
{"title":"Unravelling the monomer molar ratio modulation of the optoelectronics of Poly(propylene imine) tetra(thiophen-2-ylmethylene-amine)-co-poly(3-hexylthiophene-2,5-diyl) copolymer","authors":"Morongwa E. Ramoroka ,&nbsp;Kelechi C. Nwambaekwe ,&nbsp;Hayelom H. Tesfay ,&nbsp;Miranda M. Ndipingwi ,&nbsp;Vivian S. John-Denk ,&nbsp;Kwena D. Modibane ,&nbsp;Samantha F. Douman ,&nbsp;Emmanuel I. Iwuoha","doi":"10.1016/j.jsamd.2024.100816","DOIUrl":"10.1016/j.jsamd.2024.100816","url":null,"abstract":"<div><div>Tuning the molecular structure of a copolymer is of considerable importance for optimizing its optoelectronic and morphological properties. This will enormously help in improving and understanding the performance of a copolymer as a donor material in organic photovoltaic cells (OPVs). Herein, we reported a simple synthetic approach for developing a polypropylene imine tetra(thiophen-2-ylmethylene-amine)-<em>co</em>-poly(3-hexylthiophene-2,5-diyl) (P3HT-PT) using chemical oxidation polymerization. To the best of our knowledge, the investigations of monomer molar ratio have never been reported for synthesis of dendritic copolymers. Different concentrations of hexylthiophene (3HT) as a monomer for poly(3-hexylthiophene (P3HT) chains growth on the branches of polypropylene imine tetra(thiophen-2-ylmethylene-amine) (PPIT) as a dendritic core were studied. Nuclear magnetic resonance spectroscopy (NMR) confirmed that P3HT-PT has mixture of P3HT chains arrangements with different chain lengths. More head-to-tail arrangement was achieved at low concentration of 3HT. This study revealed that concentration of 3HT alter with optical, microscopic, electrochemical and thermal properties of P3HT-PT. Synthesized P3HT-PT polymers were further investigated as donor materials in OPVs. The investigations indicated that the P3HT-PT40 based OPV has better photovoltaic performance due to fewer aggregates and high crystallinity of P3HT-PT40, low LUMO energy levels offset and sufficient charge separation in comparison with P3HT-PT60 and P3HT-PT80 based OPVs.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100816"},"PeriodicalIF":6.7,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703196","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}
引用次数: 0
Photoactive integrated microfluidic valves for on-chip fluid control 用于片上流体控制的光活性集成微流控阀门
IF 6.7 3区 材料科学
Journal of Science: Advanced Materials and Devices Pub Date : 2024-11-17 DOI: 10.1016/j.jsamd.2024.100814
Christina Schmidleithner, Johannes R. Peham
{"title":"Photoactive integrated microfluidic valves for on-chip fluid control","authors":"Christina Schmidleithner,&nbsp;Johannes R. Peham","doi":"10.1016/j.jsamd.2024.100814","DOIUrl":"10.1016/j.jsamd.2024.100814","url":null,"abstract":"<div><div>In microfluidics, on-chip fluid control is crucial for applications where programmable and automated fluid handling with low dead volume and limited auxiliary equipment is desired. This is, for instance, the case for point-of-care (POC) devices, especially in low resource settings. The integration of photoactive valves into a disposable microfluidic chip is one method of attaining low-power and non-contact fluid control in the blink of an LED. A liquid crystal network (LCN) based micro-valve was developed, which enables rapid fluid transfer on-chip by opening a venting channel upon illumination at 80 mW cm<sup>-2</sup> with a 455 nm wavelength LED. We show in two proof-of-principle devices that multiple valves can be integrated into a 3D-printed microfluidic chip. Their individual actuation leads to directed sequential filling as well as draining of a reaction chamber, providing the prerequisite for intricate on-chip processes. Thus, our photoactive valves show the potential of facilitating programmable lab-on-a-chip experiments, for instance, for sample preparation such as for bind-wash-elute protocols, for immunoassay, or for amplification-based detection methods.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100814"},"PeriodicalIF":6.7,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703193","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}
引用次数: 0
AlCrO3-grafted g-C3N4 composite for cadmium ions removal: A paradigm shift in environmental remediation 用于去除镉离子的 AlCrO3 接枝 g-C3N4 复合材料:环境修复范式的转变
IF 6.7 3区 材料科学
Journal of Science: Advanced Materials and Devices Pub Date : 2024-11-16 DOI: 10.1016/j.jsamd.2024.100807
Zainab M.H. El-Qahtani , A. Modwi , K.H. Ibnaouf , Hanadi M. AbdelSalam , Tahani M. Albogami , Adel A. Bahaddad
{"title":"AlCrO3-grafted g-C3N4 composite for cadmium ions removal: A paradigm shift in environmental remediation","authors":"Zainab M.H. El-Qahtani ,&nbsp;A. Modwi ,&nbsp;K.H. Ibnaouf ,&nbsp;Hanadi M. AbdelSalam ,&nbsp;Tahani M. Albogami ,&nbsp;Adel A. Bahaddad","doi":"10.1016/j.jsamd.2024.100807","DOIUrl":"10.1016/j.jsamd.2024.100807","url":null,"abstract":"<div><div>The appealing graphitic phase carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) is extensively utilized for environmental remediation; however, some of its intrinsic drawbacks still need to be amended. Herein, the g-C<sub>3</sub>N<sub>4</sub> quality was improved by anchoring to AlCrO<sub>3</sub> nanoparticles to acquire a competent ternary AlCrO<sub>3</sub>@g-C<sub>3</sub>N<sub>4</sub> composite for the cadmium ions elimination. The composite elemental compositions were verified by the EDX and XPS to specify the C, N, Cr, Al, and O as the composing elements, and the XRD structural analysis revealed the development of both the g-C<sub>3</sub>N<sub>4</sub> and AlCrO<sub>3</sub>. The presence of some functional groups (C–N, C<img>N, –NH–, –NH<sub>2</sub><sub>,</sub> and –OH) as detected by the FTIR and a large surface area of 89.94 m<sup>2</sup> g<sup>−1</sup> qualified it to successfully eliminate.mg.g<sup>−1</sup> of Cd<sup>+2</sup> ions from an aqueous solution. The Cd<sup>+2</sup> ion adsorption was found to follow the Langmuir isotherm model, while the kinetics matched with the pseudo-second-order style. The high adsorption aptitude of the synthesized adsorbent could be accredited to the numerous adsorption sites, π-π conjugate interactions, and electrostatic attractions with the metal ions in water as publicized by mechanistic study.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100807"},"PeriodicalIF":6.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703190","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}
引用次数: 0
Enhancing microstructure, nanomechanical and anti-wear characteristics of spark plasma sintered Ti6Al4V alloy via nickel-silicon carbide addition 通过添加碳化镍硅提高火花等离子烧结 Ti6Al4V 合金的微观结构、纳米力学和抗磨损特性
IF 6.7 3区 材料科学
Journal of Science: Advanced Materials and Devices Pub Date : 2024-11-16 DOI: 10.1016/j.jsamd.2024.100810
Azeez Lawan Rominiyi , Peter Madindwa Mashinini , Olugbenga Ogunbiyi
{"title":"Enhancing microstructure, nanomechanical and anti-wear characteristics of spark plasma sintered Ti6Al4V alloy via nickel-silicon carbide addition","authors":"Azeez Lawan Rominiyi ,&nbsp;Peter Madindwa Mashinini ,&nbsp;Olugbenga Ogunbiyi","doi":"10.1016/j.jsamd.2024.100810","DOIUrl":"10.1016/j.jsamd.2024.100810","url":null,"abstract":"<div><div>This study examines the nanomechanical and anti-wear behaviour of spark plasma sintered Ti6Al4V matrix composites reinforced with Ni and SiC particles. Microstructural analysis revealed the <em>in-situ</em> formation of the hard TiC, Ti<sub>3</sub>SiC<sub>2</sub> and Ti<sub>5</sub>Si<sub>3</sub> phases within the metal matrix. Nanoindentation analysis revealed that the composite containing 10 wt% SiC (TNi10SiC) exhibited significantly higher nanohardness (about 10.3 GPa) and elastic modulus (∼177.7 GPa) than the unreinforced Ti6Al4V alloy (sample T). The improved nanomechanical performance of the composites was attributed to the load-carrying capacity of the hard, <em>in-situ</em> formed reinforcement phases. The anti-wear characteristics of the composites showed that TNi5SiC composite displayed superior wear resistance with a specific wear rate of 4.75 ± 0.34 × 10<sup>−4</sup> mm<sup>3</sup>/Nm and 2.15 ± 0.34 × 10<sup>−4</sup> mm<sup>3</sup>/Nm under an applied loads of 10 N and 20 N, respectively, among the sintered samples. This represents about 67% and 29% reduction in specific wear rate relative to sample T. This enhanced tribological behaviour was ascribed to the increased surface hardness, the formation of a stable transfer layer, and the reduction in direct asperity contact at the sliding interfaces. However, reinforcement pull-out aggravates abrasive wear and leads to a higher specific wear rate for TNi10SiC composite. This work provides valuable information for advancing Ti6Al4V-based composites for enhanced structural and wear-resistant applications.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100810"},"PeriodicalIF":6.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703189","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}
引用次数: 0
Advanced oxidation processes over Fe doped Bi2WO6 photocatalysts toward rhodamine B and cefalexin treatment 掺铁Bi2WO6光催化剂对罗丹明B和头孢氨苄处理的深度氧化过程
IF 6.7 3区 材料科学
Journal of Science: Advanced Materials and Devices Pub Date : 2024-11-16 DOI: 10.1016/j.jsamd.2024.100815
Phuong Hoang Nguyen , Thang Quoc Nguyen , Thi Thu Nhu Vo , Thi Minh Cao , Viet Van Pham
{"title":"Advanced oxidation processes over Fe doped Bi2WO6 photocatalysts toward rhodamine B and cefalexin treatment","authors":"Phuong Hoang Nguyen ,&nbsp;Thang Quoc Nguyen ,&nbsp;Thi Thu Nhu Vo ,&nbsp;Thi Minh Cao ,&nbsp;Viet Van Pham","doi":"10.1016/j.jsamd.2024.100815","DOIUrl":"10.1016/j.jsamd.2024.100815","url":null,"abstract":"<div><div>Industrial wastewater, contaminated by dyes and antibiotics, poses significant environmental challenges. We developed Fe-doped Bi<sub>2</sub>WO<sub>6</sub> (Fe:Bi<sub>2</sub>WO<sub>6</sub>) photocatalysts to enhance the photocatalytic activity and stability of Bi<sub>2</sub>WO<sub>6</sub>. The advanced oxidation processes (AOPs) of Fe, including the photo-Fenton process for rhodamine B (RhB) degradation and peroxymonosulfate (PMS) activation for Cefalexin (CFX) degradation, were investigated. The Fe doping altered the crystallization of Bi<sub>2</sub>WO<sub>6</sub> and improved its photocatalytic performance, achieving 97.7% RhB degradation and 70.6% CFX degradation within 180 min. These results highlighted the potential of Fe:Bi<sub>2</sub>WO<sub>6</sub> photocatalysts in wastewater treatment, emphasizing their stability and high activity across various conditions.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100815"},"PeriodicalIF":6.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143093095","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}
引用次数: 0
Enhancing 3D scaffold performance for bone tissue engineering: A comprehensive review of modification and functionalization strategies 增强三维支架在骨组织工程中的性能:改性和功能化策略综述
IF 6.7 3区 材料科学
Journal of Science: Advanced Materials and Devices Pub Date : 2024-11-16 DOI: 10.1016/j.jsamd.2024.100806
M. Selim , Hamouda M. Mousa , Muhammad Umar Aslam Khan , Gamal T. Abdel-Jaber , Nabisab Mujawar Mubarak , Ahmed Barhoum , Abdulaziz Al-Anazi , Abdalla Abdal-hay
{"title":"Enhancing 3D scaffold performance for bone tissue engineering: A comprehensive review of modification and functionalization strategies","authors":"M. Selim ,&nbsp;Hamouda M. Mousa ,&nbsp;Muhammad Umar Aslam Khan ,&nbsp;Gamal T. Abdel-Jaber ,&nbsp;Nabisab Mujawar Mubarak ,&nbsp;Ahmed Barhoum ,&nbsp;Abdulaziz Al-Anazi ,&nbsp;Abdalla Abdal-hay","doi":"10.1016/j.jsamd.2024.100806","DOIUrl":"10.1016/j.jsamd.2024.100806","url":null,"abstract":"<div><div>Bone tissue engineering holds promise for addressing bone injuries by using biomaterial-based 3D scaffolds. The efficacy of these scaffolds is paramount, relying heavily on their ability to interact with cells and facilitate tissue regeneration. This comprehensive review delves into various modification and functionalization strategies to enhance the performance of biomaterial 3D scaffolds in bone tissue engineering. The review encompasses a wide range of techniques, including physical methods such as surface roughening and patterning, and chemical modifications like plasma treatment and functional group grafting. Additionally, surface-coating approaches employing biomolecules and nanoparticles are explored. Synthesizing current research findings offers valuable insights into optimizing biomaterial scaffolds for effective bone tissue regeneration applications. In addition, discussions encompass the influence of scaffold morphology, mechanical properties, and degradation kinetics on cellular responses and tissue integration. By thoroughly examining these strategies, future research will be guided toward developing advanced biomaterial scaffolds tailored specifically for bone tissue engineering applications.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100806"},"PeriodicalIF":6.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703195","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}
引用次数: 0
Photocatalytic degradation of Rhodamine B using a reusable and magnetically separable Fe3O4/rGO/ZnO nanocomposite synthesized through green approach utilizing plant leaf extracts 利用植物叶提取物通过绿色方法合成的可重复使用且磁性可分离的 Fe3O4/rGO/ZnO 纳米复合材料光催化降解罗丹明 B
IF 6.7 3区 材料科学
Journal of Science: Advanced Materials and Devices Pub Date : 2024-11-16 DOI: 10.1016/j.jsamd.2024.100812
Nugraheni Puspita Rini , Zurnansyah , Dyah Ayu Larasati , Larrisa Jestha Mahardhika , Putri Dwi Jayanti , Hafil Perdana Kusumah , Nurul Imani Istiqomah , Rivaldo Marsel Tumbelaka , Nining Sumawati Asri , Julia Angel , Takeshi Kato , Daiki Oshima , Hasniah Aliah , Ahmad Kusumaatmaja , Edi Suharyadi
{"title":"Photocatalytic degradation of Rhodamine B using a reusable and magnetically separable Fe3O4/rGO/ZnO nanocomposite synthesized through green approach utilizing plant leaf extracts","authors":"Nugraheni Puspita Rini ,&nbsp;Zurnansyah ,&nbsp;Dyah Ayu Larasati ,&nbsp;Larrisa Jestha Mahardhika ,&nbsp;Putri Dwi Jayanti ,&nbsp;Hafil Perdana Kusumah ,&nbsp;Nurul Imani Istiqomah ,&nbsp;Rivaldo Marsel Tumbelaka ,&nbsp;Nining Sumawati Asri ,&nbsp;Julia Angel ,&nbsp;Takeshi Kato ,&nbsp;Daiki Oshima ,&nbsp;Hasniah Aliah ,&nbsp;Ahmad Kusumaatmaja ,&nbsp;Edi Suharyadi","doi":"10.1016/j.jsamd.2024.100812","DOIUrl":"10.1016/j.jsamd.2024.100812","url":null,"abstract":"<div><div>We propose the magnetically separable, green synthesis of Fe<sub>3</sub>O<sub>4</sub>/rGO/ZnO using a higher mass ratio of Fe<sub>3</sub>O<sub>4</sub>/rGO and varying ZnO concentration to degrade an aqueous solution of Rhodamin B under Fenton reaction and UV light irradiation. Fe<sub>3</sub>O<sub>4</sub> had been synthesized under the coprecipitation method utilizing <em>Moringa oleifera</em> leaf, while rGO had been fabricated by sonicating GO utilizing <em>Amaranthus viridis</em> leaf. Afterward, Fe<sub>3</sub>O<sub>4</sub>/rGO was composited under a facile method with a mass ratio of 5:5. And the last, Fe<sub>3</sub>O<sub>4</sub>/rGO/ZnO was green-synthesized through precipitation method using <em>Amaranthus viridis</em> leaf with various molarity ratio of Fe<sub>3</sub>O<sub>4</sub>/rGO: ZnO equal to 1:1, 1:2, 1:3, 1:4, and 1:5. X-ray diffraction revealed the presence of Fe<sub>3</sub>O<sub>4</sub> and ZnO phases, while Raman spectroscopy confirmed the successful reduction of GO to rGO. The morphological analysis demonstrated that the particles were nearly spherical, nonuniform, and slightly dispersed, with some agglomeration observed on the rGO sheets. Fourier-transform infrared spectroscopy identified metallic functional groups, including Fe–O and Zn–O, at 524–570 cm<sup>−1</sup> and 447–462 cm<sup>−1</sup>, respectively. However, redshift absorption and band gap narrowing were observed as the ZnO concentration increased. Photoluminescence analysis revealed that increased ZnO concentration reduces recombination and improves charge separation efficiency. The vibrating sample magnetometer exhibited soft magnetic properties. The magnetization of Fe<sub>3</sub>O<sub>4</sub>/rGO saturated at 21.7 emu/g and diminished as incorporated ZnO. The photodegradation increased with the increase of ZnO concentration, reaching its optimum at 1:5, about 89.9%. Fe<sub>3</sub>O<sub>4</sub>/rGO/ZnO demonstrates a possible ecologically friendly photocatalyst for wastewater remediation. The photocatalyst can be reused for up to three cycles with no significant change in its performance. Scavenger evaluation indicates that electrons and holes are the predominant reactive species in the photocatalytic reaction involving Fe₃O₄/rGO/ZnO.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100812"},"PeriodicalIF":6.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142722579","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}
引用次数: 0
A detailed study on the physical, mechanical, structural and gamma ray shielding properties of Al2O3–Na2O–SiO2–B2O3–Bi2O3glass system 关于 Al2O3-Na2O-SiO2-B2O3-Bi2O3 玻璃体系的物理、机械、结构和伽马射线屏蔽性能的详细研究
IF 6.7 3区 材料科学
Journal of Science: Advanced Materials and Devices Pub Date : 2024-11-16 DOI: 10.1016/j.jsamd.2024.100809
M.I. Sayyed , Ashok Kumar , Taha A. Hanafy , Yasser Maghrbi
{"title":"A detailed study on the physical, mechanical, structural and gamma ray shielding properties of Al2O3–Na2O–SiO2–B2O3–Bi2O3glass system","authors":"M.I. Sayyed ,&nbsp;Ashok Kumar ,&nbsp;Taha A. Hanafy ,&nbsp;Yasser Maghrbi","doi":"10.1016/j.jsamd.2024.100809","DOIUrl":"10.1016/j.jsamd.2024.100809","url":null,"abstract":"<div><div>The density, boron–boron separation, and molar volume of 4Al<sub>2</sub>O<sub>3</sub>–12Na<sub>2</sub>O-(18-x)SiO<sub>2</sub>-(64-x) B<sub>2</sub>O<sub>3</sub>-(2+2x)Bi<sub>2</sub>O<sub>3</sub> (where x = 2, 4, 6 and 8 mol%) are increasing with the addition of Bi<sub>2</sub>O<sub>3</sub>. The addition of Bi<sub>2</sub>O<sub>3</sub> results in an open network structure. The elastic moduli decrease from 34.711 to 29.875 GPa for Young modulus (E); 20.395 to 15.843 GPa for bulk modulus (B); from 15.257 to 13.494 GPa for shear modulus (G) and 40.738 to 33.836 GPa for longitudinal (L) respectively with increased Bi<sub>2</sub>O<sub>3</sub> concentration. FTIR spectrainvestigation found BO<sub>3</sub>, BO<sub>4</sub>, SiO<sub>4</sub>, and BiO<sub>6</sub> structural units to be present. The glasses' highest mass attenuation coefficient (MAC) is at 0.0395 MeV, the lowest energy value. It gradually decreases as energy increases. There is a decrease in the linear attenuation coefficient (LAC) values with energy. Sample Bi18 has the highest MAC and LAC values due to its high concentration of Bi<sub>2</sub>O<sub>3</sub>. Across the entire energy range, sample Bi18 has the highest effective atomic number, and the lowest half value layer and mean free path values across all energy values. The transmission factor (TF) values for Bi6 indicate that the required thickness for blocking 90% of the radiation must be greater than the thickness necessaryfor the attenuation of 50%. Bi18 has the lowest TF compared to other glass samples. The radiation protection efficiency values for Bi18 are highest, confirming their full protection ability. Bi18's is the best choice for radiation shielding.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100809"},"PeriodicalIF":6.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703191","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}
引用次数: 0
Transition metal oxide based resistive random-access memory: An overview of materials and device performance enhancement techniques 基于过渡金属氧化物的电阻式随机存取存储器:材料和器件性能增强技术概述
IF 6.7 3区 材料科学
Journal of Science: Advanced Materials and Devices Pub Date : 2024-11-16 DOI: 10.1016/j.jsamd.2024.100813
Disha Yadav , Amit Krishna Dwivedi , Shammi Verma , Devesh Kumar Avasthi
{"title":"Transition metal oxide based resistive random-access memory: An overview of materials and device performance enhancement techniques","authors":"Disha Yadav ,&nbsp;Amit Krishna Dwivedi ,&nbsp;Shammi Verma ,&nbsp;Devesh Kumar Avasthi","doi":"10.1016/j.jsamd.2024.100813","DOIUrl":"10.1016/j.jsamd.2024.100813","url":null,"abstract":"<div><div>The emergence of the big data era has led to enormous demand for memory devices that are low cost, flexible, fabrication friendly, transparent, energy efficient, and have a higher density. Resistive random-access memory (RRAM) is an outstanding emerging non-volatile memory technology that has the potential to change the avenue of future storage devices. It is a promising technology owing to its attributes like minimal power usage, simple structure, long endurance cycles, high retention time, integrability with the existing complementary metal oxide semiconductor process (CMOS), and excellent scalability. It is highly attractive for several applications like neuromorphic computing, Internet of Things, non-volatile logics, hardware security, and radiation hardened electronics. Despite significant advances in the field of RRAM, materials and recent advanced techniques to enhance its performance have not been reviewed in detail. This paper provides an in-depth review of recent advancements in the field of RRAM, including the material used for fabrication and the methods to enhance the device performance. Advanced materials, especially transition metal oxides like copper oxide, nickel oxide, zinc oxide, tantalum oxide, titanium oxide, and hafnium oxide, used to fabricate RRAM devices are reviewed and their impacts on the performance have been discussed. The key figure of merits such as endurance, retention, and multi-bit capability are studied in relation to resistive switching memories. Several methods such as structure engineering, doping, annealing, light irradiation, plasma treatment, and ion irradiation used to enhance devices' performance are discussed. Furthermore, the impact of low and high energy ion irradiation on RRAM's electrical performance is provided in detail. Finally, this paper provides directions for future research in this field based on the findings of this review.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"9 4","pages":"Article 100813"},"PeriodicalIF":6.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142703192","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}
引用次数: 0
Effect of an agglomeration-suppressed metal island buffer layer on nanostructure of FePt-oxide granular films for heat assisted magnetic recording media 抑制团聚的金属岛缓冲层对热辅助磁记录介质用fept -氧化物颗粒膜纳米结构的影响
IF 6.7 3区 材料科学
Journal of Science: Advanced Materials and Devices Pub Date : 2024-11-16 DOI: 10.1016/j.jsamd.2024.100808
Kim Kong Tham , Ryosuke Kushibiki , Daiki Miyazaki , Shin Saito
{"title":"Effect of an agglomeration-suppressed metal island buffer layer on nanostructure of FePt-oxide granular films for heat assisted magnetic recording media","authors":"Kim Kong Tham ,&nbsp;Ryosuke Kushibiki ,&nbsp;Daiki Miyazaki ,&nbsp;Shin Saito","doi":"10.1016/j.jsamd.2024.100808","DOIUrl":"10.1016/j.jsamd.2024.100808","url":null,"abstract":"<div><div>Investigation of nanostructure and magnetic properties of granular films deposited with a Carbon-Pt buffer layer (BL) as an agglomeration-suppressed metal island BL is reported. Compared with the granular film deposited on an agglomerated BL, Carbon BL, grains separation are promoted. BL with thickness thicker than 0.6 nm and Pt content of 40–70 vol% in the BL is effective to suppress the grain agglomeration. Similar to Carbon BL, (001) in-plane component in the granular film fabricated with Carbon-Pt BL is also reduced significantly. The suppression of material diffusion from BL to the granular films will enhance magnetic anisotropy energy of the granular films.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 1","pages":"Article 100808"},"PeriodicalIF":6.7,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143102318","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}
引用次数: 0
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