Article
Engineering, Electrical & Electronic
H. M. Ali, E. Kh. Shokr, Y. A. Taya, Sh. A. Elkot, M. F. Hasaneen, W. S. Mohamed
Summary: Uniform and smooth substoichiometric Molybdenum trioxide (MoO3-x) films were successfully obtained by thermal evaporation, showing sensitivity towards oxidizing CO2 and NO gases while exhibiting irreversibility and instability when used for detecting gaseous HCl. The sensors demonstrate high sensitivity to low gas flow rates and manifest the highest sensitivity values at relatively low temperatures, with short response and recovery times. The results indicate that the MoO3-x film on glass substrate of 500 nm thickness can effectively solve a variety of CO2 gas detection issues.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Physical
U. Urdiroz, F. J. Palomares, A. Mayoral, I. Soldatov, R. Schafer, J. M. Gonzalez, M. Sanchez-Agudo, E. Navarro, A. Ruiz, M. Alonso, L. Vazquez, F. Cebollada
Summary: This study investigates the crystallization processes and magnetic properties of two sets of amorphous Fe80B20 films deposited on substrates with different nature. The type of substrate impacts the crystallization temperature and mechanism, ultimately influencing the magnetic characteristics of the films.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Deepak Suthar, Himanshu, S. L. Patel, S. Chander, M. D. Kannan, M. S. Dhaka
Summary: This study investigates the impact of hydrogen annealing temperature on the properties of ZnTe films, including their structure, optical transmittance, luminescence, surface morphology, and composition. The results show that annealing significantly affects the crystalline phase, optical transmittance, luminescence properties, surface morphology, and composition of the ZnTe films.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Coatings & Films
Thomas R. Koenig, Zhaoxia Rao, Eric Chason, Garritt J. Tucker, Gregory B. Thompson
Summary: The study investigates the stress and microstructural evolution of Ni thin films under various sputtering conditions. A kinetic model is used to understand the factors contributing to the intrinsic stress development and their relationship with microstructure. It was found that bimodal grain size distribution in films deposited at the lowest pressure deviated from the model's predictions, impacting the overall fit of the model to experimental data.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
D. T. Yimam, M. Ahmadi, B. J. Kooi
Summary: In this study, the growth of monatomic antimony thin films using pulsed laser deposition on lattice-matching and amorphous substrates was demonstrated. The results showed that the method can produce smooth and high-quality antimony thin films with uniform coverage, which have potential for research in phase change memory and nanophotonics.
MATERIALS TODAY NANO
(2023)
Article
Microscopy
Shanshan Chen, Yixiao Jiang, Tingting Yao, Ang Tao, Xuexi Yan, Fang Liu, Chunlin Chen, Xiuliang Ma, Hengqiang Ye
Summary: epsilon-Fe2O3 has attracted significant interest in the field of magnetoelectric materials due to its promising physical properties. In this study, epsilon-Fe2O3 (001) thin films were successfully epitaxially grown on SrTiO3 (111) substrates using pulsed laser deposition. The factors that significantly affect the epitaxial growth of epsilon-Fe2O3 thin films, such as oxygen pressure, deposition and annealing temperatures, and laser beam energy, were investigated. The results showed that the epsilon-Fe2O3 thin films exhibited strong magnetic anisotropy, a coercivity of 600 Oe, and an indirect band gap of 3.26 eV.
Article
Materials Science, Multidisciplinary
Elisa Cantergiani, Xavier Sauvage, Colin P. Scott, Arnaud Weck
Summary: A new process for obtaining high-strength interstitial free (IF) steel quickly was investigated, which involves coating thin sheets of IF steel with an amorphous FeC film and subjecting them to a two-step induction heating cycle. The resulting material has improved mechanical properties and a fine microstructure.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2022)
Article
Chemistry, Physical
Baran Sarac, Tolga Karazehir, Eray Yuce, Marlene Muehlbacher, A. Sezai Sarac, Juergen Eckert
Summary: Improving the efficiency of hydrogen storage and release using metallic glass nanofilms offers green solutions for nanoscale energy applications. Specific sizes and configurations of the hydrogen storage components demonstrate high electrochemical performance, with high specific pseudocapacitance and conductive behavior.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Debaditya Chatterjee, Shuoyuan Huang, Kaichen Gu, Jianzhu Ju, Junguang Yu, Harald Bock, Lian Yu, M. D. Ediger, Paul M. Voyles
Summary: Physical vapor deposition is used to create stable organic glass systems with nanoscale orientational and translational ordering of molecules. Using low-dose 4D STEM and a 2 nm probe, we have mapped columnar order in glassy samples of a discotic mesogen. Both vapor-deposited and liquid-cooled glassy films show similar domains of orientation, with size variations depending on processing. These results demonstrate the potential of low-dose 4D STEM for characterizing mesoscale structures in molecular glass systems relevant to organic electronics.
Article
Chemistry, Physical
T. I. Milenov, I. A. Avramova, A. Dikovska, D. Karaivanova, P. Terziyska, S. K. Kolev, D. Karashanova, B. Georgieva, D. Dimov, V. Atanasov, E. P. Valcheva
Summary: The study found that UV-C irradiation had a significant impact on the structural quality of a-C:H and ta-C:H films, reducing the content of sp(3) and oxygen-containing radicals. The influence of UV-C light directed almost parallel to the films' surface on the structural quality of graphene-like films was slightly higher than that directed perpendicular.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Applied
Ohhun Kwon, Renjing Huang, Tianyu Cao, John M. Vohs, Raymond J. Gorte
Summary: The study found that LaMnO3 films deposited on MgAl2O4 showed uniform coverage and maintained their structure intact after multiple redox cycles, with Ni also retaining good dispersion. The LaMnO3-supported catalyst exhibited higher activity and superior resistance against coke formation compared to Ni on unmodified MgAl2O4. The performance of Ni on LaMnO3 films was compared to previous results on other oxide films such as LaFeO3, CaTiO3, SrTiO3, and BaTiO3.
Article
Nanoscience & Nanotechnology
Lucia Bajtosova, Barbora Krivska, Rostislav Kralik, Jozef Vesely, Jan Hanus, Petr Harcuba, Jan Fikar, Ankit Yadav, Miroslav Cieslar
Summary: This study used molecular dynamics simulation method to investigate the mechanical properties of thin aluminum-based films, and compared the results with transmission electron microscope experiments. The simulation results matched well with the experimental results, revealing the importance of grain boundary processes in deformation.
SCRIPTA MATERIALIA
(2022)
Article
Chemistry, Physical
Tatyana Kunkel, Yuri Vorobyov, Mikhail Smayev, Petr Lazarenko, Vladimir Veretennikov, Vladimir Sigaev, Sergey Kozyukhin
Summary: Crystallization of amorphous thin films of Ge2Sb2Te5 (GST225) under femtosecond pulses excitation can occur in two ways: formation of fine-grained polycrystalline material at moderate laser fluence levels, and production of larger grains closer to the beam axis at higher fluence levels, leading to inhibition of nucleation due to high cooling velocity. The type of substrate (metallic or oxide) and film thickness also affect the crystallization process due to light penetration depth and reflection from the film-substrate interface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Takamitsu Ishiyama, Kota Igura, Takashi Suemasu, Kaoru Toko
Summary: Recent advancements in polycrystalline Ge layers formed through solid-phase crystallization have demonstrated higher carrier mobilities than single-crystal Si. This study thoroughly examines the phenomenon of metal-induced lateral crystallization in Ge, finding that 20 out of 24 tested metals promote low-temperature lateral growth on glass. The results, categorized by reaction type and growth morphology, have broad implications for various materials, with potential applications in developing next-generation thin-film devices on common and inexpensive substrates.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Robert Streubel, D. Simca Bouma, Frank Bruni, Xiaoqian Chen, Peter Ercius, Jim Ciston, Alpha T. N'Diaye, Sujoy Roy, Steve D. Kevan, Peter Fischer, Frances Hellman
Summary: Experimental evidence of 3D chiral spin textures, including helical spins and skyrmions with different chirality and topological charge, has been reported in amorphous Fe-Ge thick films. These results demonstrate that structurally and chemically disordered materials can resemble inversion symmetry broken systems with similar magnetic properties, moments, and states, providing greater flexibility in materials synthesis, voltage, and strain manipulation.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jonathan Phelipot, Nicolas Ledos, Thomas Dombray, Matthew P. Duffy, Mathieu Denis, Ting Wang, Yahia Didane, Meriem Gaceur, Qinye Bao, Xianjie Liu, Mats Fahlman, Pietro Delugas, Alessandro Mattoni, Denis Tondelier, Bernard Geffroy, Pierre-Antoine Bouit, Olivier Margeat, Joerg Ackermann, Muriel Hissler
Summary: Fluorescent nanohybrids based on pi-extended hydroxyoxophosphole ligands grafted onto ZnO nanoparticles are designed and studied for potential use in OLEDs as solution-processed emissive layers. The restriction of intramolecular motions of the organic fluorophore leads to highly emissive materials due to aggregation induced emission effect. Theoretical calculations and XPS analyses were conducted to analyze the interactions between organic and inorganic components.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Silan Zhang, Matteo Massetti, Tero-Petri Ruoko, Deyu Tu, Chi-Yuan Yang, Xianjie Liu, Ziang Wu, Yoonjoo Lee, Renee Kroon, Per O. A. Persson, Han Young Woo, Magnus Berggren, Christian Muller, Mats Fahlman, Simone Fabiano
Summary: The development of record-high performance n-type OECTs utilizing multi-walled carbon nanotubes and ladder-type pi-conjugated redox polymer has significantly increased electron mobility and fast response time. This enables the development of complementary inverters with large voltage gain and noise margin at low supply voltage.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Mahboobeh Ejtemaei, Sepehr Sadighi, Mehdi Rashidzadeh, Sirous Khorram, Jan O. Back, Simon Penner, Michael F. Noisternig, Dariush Salari, Aligholi Niaei
Summary: This study investigates the surface treatment of kaolin and attapulgite/zeolite A extrudates using argon glow discharge plasma. The results show that plasma treatment increases surface area and pore volume, but decreases the weak acidic site density of the extrudates. The plasma-treated sample exhibits improved resistance to coke formation compared to the untreated one.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Qingqing Wang, Jinpeng Yang, Slawomir Braun, Mats Fahlman, Xianjie Liu
Summary: The study found that the PPC behavior in organic phototransistors is influenced by oxygen in the air, and successfully achieved organic memory phototransistors with bistable current states and long retention times.
ORGANIC ELECTRONICS
(2022)
Article
Nanoscience & Nanotechnology
Ulrika Boda, Jan Strandberg, Jens Eriksson, Xianjie Liu, Valerio Beni, Klas Tybrandt
Summary: High-throughput production methods, such as screen printing, can bring stretchable electronics out of the lab and into the market. We report on a cost-efficient and scalable approach to improving the stability of stretchable conductor inks based on silver flakes by coating them with a thin layer of gold. The resulting conductors are highly conductive, remain functional under high strain, and show excellent corrosion and tarnishing stability, making them ideal for wearable LED and NFC circuits.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xue-Rong Shi, Peijie Wang, Caihong Jing, Kaiwei Wu, Shusheng Xu, Bernhard Klotzer
Summary: This study reveals the role of oxygen defects in ZrO2/Pd catalyst in the dry reforming of CH4 (DRM) reaction. The reduction of perfect ZrO2 into Zr is not feasible, but the complete reduction of hydroxylated zirconia into Zr is thermodynamically possible under ultrahigh vacuum conditions. The formation of oxygen vacancies at the hydroxylated phase boundary of ZrO2/Pd is both kinetically and thermodynamically feasible. The presence of oxygen vacancies and metal-oxide phase boundary significantly improves the DRM activity.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Junyi Li, Xianjie Liu, Mats Jonsson
Summary: This study experimentally investigated the change in UO2 reactivity after exposure to O2 or gamma-radiation. The results showed that the reactivity of UO2 decreased significantly over time, especially in consecutive exposures. Surface analysis revealed that UO2 surfaces were significantly oxidized under all exposure conditions, with the presence of U(V) and no U(VI) observed.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Hamid Ghorbani Shiraz, Zia Ullah Khan, Daniel Pere, Xianjie Liu, Yannick Coppel, Mats Fahlman, Mikhail Vagin, Radoslaw Chmielowski, Myrtil L. Kahn, Magnus Berggren, Xavier Crispin
Summary: We investigated the effect of oxygen poisoning on the efficiency of hydrogen production and found that the oxygenated and intercalated electrocatalyst has a significantly lower exchange current density of the hydrogen evolution reaction compared to the pristine material.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Dominik Steiner, Marco Thaler, Thomas Mairegger, Florian Mittendorfer, Erminald Bertel
Summary: Growth of high-quality, large-scale hexagonal boron nitride (h-BN) monolayers requires either a low nucleation density or coalescence of identically oriented nuclei. This study investigates the nucleation process of h-BN on Pt(110) and finds that the scarcity or absence of twin domains is mainly due to nonclassical nucleation with an extremely low nucleation density. The instability of the Pt(110) surface layer plays a key role in the unexpected single-domain growth on a template with different symmetry.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Instruments & Instrumentation
Leander Haug, Christoph Griesser, Christoph W. Thurner, Daniel Winkler, Toni Moser, Marco Thaler, Pit Bartl, Manuel Rainer, Engelbert Portenkirchner, David Schumacher, Karsten Dierschke, Norbert Koepfle, Simon Penner, Martin K. Beyer, Thomas Loerting, Julia Kunze-Liebhaeuser, Bernhard Kloetzer
Summary: This paper presents a versatile laboratory-based near ambient pressure X-ray photoelectron spectroscopy (XPS) instrument, which is highly customized with geometry, exchangeable manipulators, and sample stages for various electrochemical and catalytic experiments. The instrument provides access to a broad choice of functional materials and their specific surface processes. The combination of manipulators allows for experiments in solid state/gas phase interactions, liquid electrochemistry, and cryogenic experiments for ice-like materials, making it a flexible and modular system for in situ and operando XPS experiments.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Chemistry, Physical
Leander Haug, Christoph Thurner, Maged F. Bekheet, Kevin Ploner, Benjamin Bischoff, Aleksander Gurlo, Martin Kunz, Bernhard Sartory, Simon Penner, Bernhard Kloetzer
Summary: To investigate the synergistic action of differently prepared Ni-ZrO2 phase boundaries in methane dry reforming, three catalyst systems including an inverse near-surface intermetallic NiZr catalyst precursor, bulk-intermetallic NixZry material, and a supported Ni-ZrO2 catalyst were compared. All three catalysts exhibit stable and highly efficient methane dry reforming activity with improved resistance to coke deposition due to the presence of extended Ni-ZrO2 phase boundaries formed by in situ activation. Methane is decomposed to carbon at metallic Ni-0 surface sites, while CO2 is converted to CO at reduced Zr centers at the phase boundaries. The surface-ZrO2 modified bulk Ni-0 catalyst shows the best decoking and carbon conversion conditions, attributed to the dispersed ZrO2 islands and short diffusion pathways for carbon.
Article
Engineering, Electrical & Electronic
Matteo Massetti, Silan Zhang, Padinhare Cholakkal Harikesh, Bernhard Burtscher, Chiara Diacci, Daniel T. Simon, Xianjie Liu, Mats Fahlman, Deyu Tu, Magnus Berggren, Simone Fabiano
Summary: A direct-write additive process was developed to fabricate fully 3D-printed organic electrochemical transistors (OECTs) using 3D printable inks. These OECTs can be fabricated on flexible substrates, providing high mechanical and environmental stability. They exhibit good dopamine biosensing capabilities and long-term synapse response, making them suitable for various applications such as sensors and neuromorphic hardware.
NPJ FLEXIBLE ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
E. Mustafa, E. A. Dawi, Z. H. Ibupoto, A. M. M. Ibrahim, A. Elsukova, X. Liu, A. Tahira, R. E. Adam, M. Willander, O. Nur
Summary: Water splitting energy production relies on high-performance PECs, and CuO is considered an excellent photocathode material. By incorporating Ag2WO4 nanoparticles onto CuO nanoleaves using SILAR, a CuO/Ag2WO4 composite with outstanding performance in the PEC water splitting process is developed. Factors such as surface active sites, charge separation rate, surface defects, and CuO and Ag2WO4 interaction contribute to the performance of the composite.
Article
Materials Science, Multidisciplinary
Lukas Graf, Martin Knupfer, Qingqing Wang, Mats Fahlman, Xianjie Liu
Summary: Two-dimensional, high-quality perylene single crystals were successfully grown using a space-confined strategy method. The films exhibited alpha form crystallization, which was confirmed through various techniques. The optical absorption measurements showed strong anisotropy and excellent agreement with literature data, while the field-effect transistor's anisotropic mobility data demonstrated high crystalline order. Momentum-dependent studies using electron energy-loss spectroscopy revealed negative dispersion of the first exciton along the crystal b direction, with an exciton bandwidth of 72 meV. The observed behavior is believed to be a result of charge-transfer exciton coupling between perylene dimers in the unit cell.
Article
Materials Science, Multidisciplinary
Jing-De Chen, Ling Li, Chao-Chao Qin, Hao Ren, Yan-Qing Li, Qing-Dong Ou, Jia-Jia Guo, Shi-Jie Zou, Feng-Ming Xie, Xianjie Liu, Jian-Xin Tang
Summary: This paper proposes an energy recycling strategy to recycle the trapped energy in plasmonic electrodes, achieved by constructing a transparent silver-based plasmonic metal electrode and combining it with a luminescent organic emitter. This approach enables optimized optical transmission and enhanced light harvesting efficiency.
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)
