Article
Materials Science, Multidisciplinary
Najnin Bano, K. Dey, A. Tripathy, P. Garg, U. Deshpande, D. K. Shukla
Summary: In this study, we investigated the effect of dc bias voltage on the dielectric properties of YIG at different temperatures and frequencies. The results showed that the application of a small dc bias voltage can significantly enhance the dielectric constant and reduce the dielectric loss of YIG. Especially at higher temperatures, the dc bias voltage has a pronounced suppressing effect on the grain boundary contributions.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Materials Science, Composites
Yanmei Piao, Vipin N. Tondare, Chelsea S. Davis, Justin M. Gorham, Elijah J. Petersen, Jeffrey W. Gilman, Keana Scott, Andras E. Vladar, Angela R. Hight Walker
Summary: This study evaluated the effectiveness of XPS, Raman spectroscopy, and SEM methods on MWCNT-epoxy nanocomposite samples, finding a positive correlation between signal intensity and MWCNT mass loading. The results showed that these methods were capable of detecting MWCNTs at different concentrations and demonstrated good comparability among them.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Y. Guerra, L. Leal, M. Cabrera-Baez, E. Padron-Hernandez, S. Castro-Lopes, Bartolomeu C. Viana, G. Abreu, J. Caland, P. Matos-Rodrigues, F. Santos, J. Matilla-Arias, R. Pena-Garcia
Summary: Yttrium iron garnet (YIG) has appropriate physical properties for applications in microwave, magneto-optical devices, and spintronics. This study investigated the cation's distribution, valence states, and oxygen vacancies in Y2.98Er0.02Fe5-yCryO12 compound. Transmission electron microscopy and selected area electron diffraction confirmed the coral type structures and crystalline nature of YIG. X-ray photoelectron spectroscopy was used to identify valence states and oxygen vacancies, while electron paramagnetic resonance measurements detected the magnetic contributions of Fe and Cr ions. The saturation magnetization decreased with an increase in Cr content, which was explained by a phenomenological model.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Min-Ji Kim, Hye-Jin Ok, Youngkyun Son, Guiyoung Gu, Dong-Woo Suh, Ki-Suk Lee, Sukbin Lee
Summary: The microstructural characterization of polycrystalline yttrium iron garnet (YIG) during high temperature sintering showed that grain coarsening occurred via normal grain growth, with the 1050-min and 1750-min samples exhibiting narrower x-ray peaks and smaller local misorientation compared to the 350-min sample. Additionally, EPMA analyses indicated a more uniform distribution of elements in the 1750-min sample, with little segregation of metal elements observed on the grain boundary in the current YIG samples.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Samuel Berweger, Robert Tyrell-Ead, Houchen Chang, Mingzhong Wu, Na Zhu, Hong X. Tang, Hans Nembach, T. Karl Stupic, Stephen Russek, T. Mitch Wallis, Pavel Kabos
Summary: This study presents a method for imaging spin-wave excitations in a YIG thin film using near-field microwave microscopy with high spatial resolution of 50 nm. This approach shows potential for improving the spatial resolution over optical techniques.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Ceramics
Jiamao Li, Zexing Wang, Yunfeng Guo, Songlin Ran
Summary: In this study, Li2Zn[Ti1-x(Ni1/3Nb2/3)(x)](3)O-8 (LZTNNx) ceramics were designed and examined to investigate the relationship among phase compositions (including oxygen vacancies and Ti3+ ions), microstructures, and microwave dielectric characteristics. The appropriate amount of (Ni1/3Nb2/3)(4+) substitution improved the densification and reduced the average grain size of LZTNNx ceramics. The relative dielectric constant (epsilon(r)) was related to the molar volume ionic polarizability (alpha(T)(D)), and the temperature coefficient of the resonant frequency (tau(f)) was related to the bond valence (V-i) of Ti. The LZTNN0.2 ceramics showed favorable microwave dielectric properties and could be a promising candidate for wireless communication applications.
JOURNAL OF ADVANCED CERAMICS
(2023)
Article
Geochemistry & Geophysics
Minghai Fu, Jingjing Dai, Longxian Zhao
Summary: Raman spectroscopy is a non-destructive and rapid method for analyzing and measuring mineral composition and structure. This study conducted micro-Raman spectrum and electron microprobe research on garnet from the Jiama copper polymetallic deposit in Tibet. The results showed that the Raman peaks of garnet shifted with the increase in andradite content, and the Raman spectrum can indicate the composition change in garnet. The analysis of garnet's Raman spectrum is of great significance for skarn zoning and prospecting.
Article
Materials Science, Ceramics
P. H. Pessoa, L. K. S. Assis, E. L. T. Franca, A. S. Carvalho, D. M. Oliveira, E. Padron-Hernandez
Summary: This work presents a new methodology for fabricating elongated YIG nanostructures using low-cost materials and the sol-gel method, and estimating the average size of the structures within the pores through ferromagnetic resonance measurements. The results showed that the methodology is efficient and has promising future applications.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Biotechnology & Applied Microbiology
Xiaoqian Wu, Kun Liu, Rui Luo, Jianhao Xu, Mingsheng Chen
Summary: This study investigated the use of atmospheric pressure plasma jet (APPJ) for modifying the surface of lithium disilicate glass ceramics (LDC) in resin cementation. The results showed that APPJ treatment method has great potential as an alternative to hydrofluoric acid (HF) in LDC-resin cementation, with acceptable bonding strength.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Chemistry, Physical
Vanasundaram Natarajan, P. Naveen Kumar, Muneer Ahmad, Jitender Paul Sharma, Anil Kumar Chaudhary, Praveen Kumar Sharma
Summary: The artificial stacking of nanohybrid films to enhance their properties has intrigued researchers to explore this possibility in emerging technologies. Samples of zinc sulfide/reduced graphene oxide (ZnS/rGO) were fabricated using the layer-by-layer approach and various techniques were used to study their structure and optoelectronic properties. The results show potential applications of ZnS/rGO nanocomposite films in future electronics.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Environmental Sciences
Yueh-Feng Li, Ching-Yao Hu, Yu-Chi Lee, Shang-Lien Lo
Summary: This study found that adding ZnCl2 can increase the efficiency of EC for PFOA, and the longer the carbon chain of PFA, the better the removal by EC. Chemical bonding between aluminum and fluoride was observed. The main functions of ZnCl2 were to prevent the rise in pH and improve flotation.
Article
Materials Science, Ceramics
Yu Jiang, Huan Liu, Zhiyu Xiu, Guofa Wu, Minmin Mao, Xinjiang Luo, Bing Liu, Zhilun Lu, Zeming Qi, Dongyang Sun, Kaixin Song
Summary: Temperature stability is an important property for microwave electronic components and is crucial for evaluating the performance of microwave dielectric ceramics. This article investigates the regulation of the temperature coefficient of high-Q x f garnet-type Y2.95Dy0.05MgAl3SiO12 microwave ceramic through doping with different mass ratios of TiO2. The dielectric loss and theoretical permittivity of Y2.95Dy0.05MgAl3SiO12-9 wt%TiO2 ceramic were calculated using the Kramers-Kronig formula and found to align with experimental results. The fabrication and testing of a 5G millimeter-wave antenna using Y2.95Dy0.05MgAl3SiO12-9 wt%TiO2 ceramic demonstrated excellent temperature stability and radiation characteristics. These findings indicate that the temperature-stable ceramic antenna has promising prospects in 5G millimeter wave communication.
CERAMICS INTERNATIONAL
(2022)
Review
Instruments & Instrumentation
Rohan S. Dassanayake, Niwanthi Dissanayake, Juan S. Fierro, Noureddine Abidi, Edward L. Quitevis, Kiran Boggavarappu, Vidura D. Thalangamaarachchige
Summary: Cellulose nanocrystals (CNCs) have gained significant attention due to their wide range of applications. This review focuses on the characterization of CNCs and CNCs-derived materials using spectroscopic techniques such as solid-state nuclear magnetic resonance (NMR) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron (XPS) spectroscopy, and Raman spectroscopy.
APPLIED SPECTROSCOPY REVIEWS
(2023)
Article
Engineering, Electrical & Electronic
Ulan Myrzakhan, Farhan A. Ghaffar, Mohammad Vaseem, Hossein Fariborzi, Atif Shamim
Summary: Describes a completely vialess ferrite substrate-based waveguide phase shifter realized through low-cost inkjet printing technique, which allows the fabrication of a conventional rectangular waveguide on a standard magnetic substrate, improving the RF performance and enabling low-cost integration on printed circuit boards.
IEEE TRANSACTIONS ON MAGNETICS
(2023)
Article
Materials Science, Multidisciplinary
Izabela Jendrzejewska, Karel Knizek, Jerzy Kubacki, Jerzy Goraus, Tomasz Goryczka, Ewa Pietrasik, Zoia Barsova, Josef Jampilek, Beata Witkowska-Kita
Summary: Chemical compounds CuCr2-xMnxSe4 (x = 0.1, 0.2) were successfully synthesized in polycrystalline and nanoparticle forms using solid state reaction and high-energy ball milling. The study investigated the influence of grain size and manganese content on the structure, magnetic, and thermal properties of the compounds. Results showed that decreasing grain size leads to a decrease in melting temperature, and the presence of Mn ions affects the stability and resistance of the doped compounds compared to pure CuCr2Se4.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Materials Science, Multidisciplinary
Madeeha Riaz, Manahil Najam, Hina Imtiaz, Farooq Bashir, Tousif Hussain
Summary: This study focuses on the structural and biological analysis of Zn-Cu based biodegradable alloys for orthopedic applications. The results indicate that the alloys have good electrical conductivity and biocompatibility, with potential for promoting bone growth and healing process. Additionally, the alloys exhibit a low corrosion rate and improved corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rijo Rajeev, Sk Safikul Islam, Anitha Varghese, Gurumurthy Hegde, Suryasarathi Bose
Summary: In this study, a facile and selective electrochemical sensor was developed for the sensing of guanosine. The sensor utilized a unique porous structure and ordered framework, enabling linear detection of guanosine concentration in the range of 0.123-720 μM under specific conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Rafael V. M. Freire, Dominique Celeste de A. Dias, Jose Yago Rodrigues Silva, Dayane Kelly Dias do Nascimento Santos, Larissa T. Jesus, Ricardo O. Freire, Severino A. Junior
Summary: This study reports the extraction and isolation of euphol from nature, its adsorption in nanosized ZIF-8, and the efficacy of this system against cancer cells. Experimental and simulation results show that ZIF-8 can enhance the effectiveness of euphol against cancer cells and selectively target cancer cells.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Manal A. Awad, Awatif A. Hendi, Maha M. Almoneef, Maymunah Alwehaibi, Khalid M. Ortashi, Wadha Alenazi, Fatimah S. Alfaifi, Shareefa Alahmariye, Asma Alangery, Warda Ali Alghoubiri, Haia Aldosari
Summary: In this study, magnesium-doped zinc oxide nanoparticles were synthesized and characterized. The research findings show that magnesium doping can alter the crystal structure and optical properties of zinc oxide, while enhancing its dielectric constant.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
F. J. Willars-Rodriguez, I. R. Chaverz-Urbiola, M. A. Hernandez-Landaverde, A. Zavala-Franco, E. A. Chavez-Urbiola, P. Vorobiev, Yu V. Vorobiev
Summary: This study focuses on manganese doped CdS thin films synthesized by chemical bath deposition. The incorporation of Mn2+ cations in CdS was found to influence the crystalline structure, morphology, and optoelectronic properties. Doped thin films exhibited a uniform hexagonal structure, changed growth orientation, and showed scale-like and needle-like morphologies. The bandgap and rectification speed of Schottky diodes were modified by introducing manganese. This study suggests the potential for affordable high-speed optoelectronic devices.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Mehdi Javidi, Hooman Karimi Abadeh, Fatemeh Namazi, Hamid Reza Yazdanpanah, Narjes Shirvani Shiri
Summary: This study investigated the synergistic effect of temperature, solution velocity, and sulphuric acid concentration on the corrosion behavior of carbon steel using response surface methodology. The results showed that temperature affected anodic reactions, solution velocity influenced cathodic reactions, and acid concentration altered the corrosion mechanisms by changing the properties of the surface layer.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
R. Sakthivel, Thirumoorthy Kulandaivel, Kirankumar Venkatesan Savunthari, K. Mohanraj, Hans-Uwe Dahms, Aswin kumar Anbalagan, Manjunath Rangasamy, Kien-Voon Kong
Summary: In this study, saturated fatty acids were incorporated with silane to modify viscose fabric, resulting in superhydrophobic and superoleophilic properties. The modified fabric showed excellent separation efficiency for oil and organic solvents, with high absorption capacity. The modified fabric also exhibited durability and retained its properties in harsh conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Wei Zhang, Hong Lei, Wenqing Liu, Zefang Zhang, Yi Chen, Xiaogang Hu, Xiangshan Ye
Summary: In this study, EDTA-grafted alumina composite abrasives were produced by a two-step process for the CMP of sapphire substrates. Experimental results showed that the modified abrasives exhibited better dispersion properties and significantly improved polishing efficiency, with higher material removal rates and lower surface roughness. The combination of chemical reaction and mechanical action enhanced the CMP performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Shumaila Rafaqat, Bushra Perveen, Warda Raqba, Warda Imran, Arshad Hussain, Naeem Ali
Summary: This study developed a MnP-based biosensor for quantitative measurement of dye concentrations using electrochemical signals. The effects of two different dyes on MnP activity were investigated, with one dye showing inhibitory effects and the other dye having no effect. The study demonstrates the potential application of enzyme-based biosensors in dye detection and toxicological monitoring.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Jinyan Shi, Oguzhan Yavuz Bayraktar, Baris Bayrak, Burak Bodur, Ali Oz, Gokhan Kaplan, Abdulkadir Cuneyt Aydin
Summary: The elemental composition of precursors is crucial for the performance development of geopolymers. The use of lime instead of metakaolin increases the fluidity and mechanical properties of geopolymers, while the addition of gypsum decreases them. Furthermore, higher lime content exacerbates the negative effect of gypsum.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aayush Gupta, Kaveri Ajravat, Loveleen K. Brar, O. P. Pandey, Pandey Rajagopalan
Summary: This study focuses on the performance of Mn3O4-ZnO composite material in wastewater treatment and energy storage applications, and presents a detailed comparative analysis. Results show that the composite material with equal concentrations of Mn3O4 and ZnO exhibits excellent photocatalytic activity and high capacitance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
V. Murugabalaji, Matruprasad Rout, Harsh Soni, Biranchi Narayan Sahoo
Summary: This study focuses on the corrosion characteristics of AA 7075 and AA 7075 based hybrid composite fabricated using stir casting and hot rolling techniques. The results show that the hybrid composite produced by hot cross rolling exhibits better corrosion resistance compared to the base metal. The addition of a small amount of graphite improves the bonding between the matrix and reinforcements, and the hot cross rolling enhances this bonding, leading to the formation of a strong passivation oxide layer and increased charge transfer resistance, thereby improving corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Fangkun Ning, Qinghao Shi, Shuping Kong, Weitao Jia, Lifeng Ma
Summary: The paper investigates a new method of rolling sheets with variable chamfering amounts in both the transversal and normal directions. The feasibility of the technological process was tested through simulation and compared with experimental results. Three important process parameters, temperature, stress, and flow velocity, were used to evaluate the effects on chamfering amount before determining the optimal angle. The spread formula for evaluating the shape quality of the plate after ECR was obtained through testing and theory.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
Aqeel Abbas, M. A. Hussein, Mohamed Javid
Summary: In this study, the AM60 magnesium alloy was processed using high-energy ball milling, and the results showed that different reinforcement agents had certain effects on particle size, crystallite size, lattice strain, and dislocation density.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Materials Science, Multidisciplinary
D. S. Mahmoud, E. M. Eldesouki, W. M. Abd El-Gawad
Summary: The development of flexible and lightweight microwave-absorbing materials has become a trendy topic. This study focuses on enhancing the microwave-absorbing performance of butadiene-acrylonitrile rubber (NBR) by incorporating novel reinforcing nanofillers. The results show that the NBR nanocomposite with a loading of 16 parts per hundred rubber (phr) of LiFe 20%/Si has the best microwave-absorbing performance.
MATERIALS CHEMISTRY AND PHYSICS
(2024)