Article
Chemistry, Multidisciplinary
Kacho Imtiyaz Ali Khan, Ram Singh Yadav, Himanshu Bangar, Akash Kumar, Niru Chowdhury, Prasanta Kumar Muduli, Pranaba Kishor Muduli
Summary: In this study, we investigate the growth of Fe3Sn2 thin films on Si/SiO2 substrates with two different seed layers (Ta and Pt). We find that Pt/Fe3Sn2 thin films form a pure ferromagnetic phase with higher saturation magnetization and exhibit an anomalous Hall coefficient that is two orders of magnitude higher than traditional ferromagnets. These results are important for the development of novel topological spintronic devices.
Article
Engineering, Environmental
Hajo Bitter, Susanne Lackner
Summary: Differential scanning calorimetry (DSC) can be used to quantify microplastics, with improved detection accuracy and limits achieved through defined pre-heating and cooling steps. The method is shown to be feasible for environmental samples, with quantification limits and accuracy demonstrated for various polymers such as PE, PET, PP, and PA6.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Alessandro Tonon, Enrico Di Russo, Francesco Sgarbossa, Luca Bacci, Nicola Argiolas, Carlo Scian, Yurii P. Ivanov, Giorgio Divitini, Brendan Sheehan, Davide De Salvador, Andrea Gasparotto, Vittorio Morandi, Ray Duffy, Enrico Napolitani
Summary: This study aimed to directly produce large-scale crystalline 2H-MoS2 films on a SiO2-on-Si substrate through nanosecond pulsed laser annealing. The film structure, composition, and morphology were monitored using various techniques, such as Raman spectroscopy, X-ray diffraction, Rutherford backscattered spectroscopy, scanning transmission electron microscopy, and atomic force microscopy. The electrical properties of the film with optimized crystallinity were investigated by depositing Cr/Au contacts using shadow masks. This approach can be applied to other TMDs materials and substrates, enabling the fabrication of heterostructures and electrical devices on a single substrate.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Polymer Science
Zongling Yang, Lin Luo, Fangyu Fan, Jingcheng Su, Chongyin Zhou, Huan Kan
Summary: The study demonstrated that adding 5% nano-SiO2 improved the barrier properties of the composite film, while adding 7% nano-SiO2 significantly enhanced the mechanical properties of the film. Nano-SiO2 also increased the melting temperature of the composite film, and through spray drying encapsulation, the stability of walnut oil microcapsules was improved by incorporating nano-SiO2 into the wall material.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Chemistry, Physical
Qiang Li, Cheng Chen, Manzhang Xu, Yingnan Wang, Xuewen Wang, Zhiyong Zhang, Wu Zhao, Johan Stiens
Summary: The study demonstrated that the crystal structure of SiCN thin films significantly influences their blue-violet emission intensity, and annealing process can optimize the photoluminescence performance of the films. Characterization results using XRD and PL spectra showed that, under annealing at 900 degrees Celsius, SiCN samples exhibited the best crystallinity and blue-violet emission intensity.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Ceramics
Prashant Thapliyal, Alok S. Kandari, Vijendra Lingwal, N. S. Panwar, G. Mohan Rao
Summary: The study investigated the characteristics of (Ta2O5)1-x- (TiO2)x (TTOx) thin films prepared with different compositions and annealing temperatures, revealing that the film with x = 0.06 and annealed at 700°C exhibited the highest dielectric constant and lower leakage current density, making it suitable for high-density silicon memory devices.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Hugh Littlehailes, William R. Hendren, Stacey Drakeley, Robert M. Bowman, Fumin Huang
Summary: The optical properties of refractory intermetallic thin films of Au3Zr were experimentally investigated for the first time, showing distinctive plasmonic properties. The films' structural and optical properties were found to be critically dependent on deposition temperature and anneal conditions, with films deposited between 205 and 320 degrees C exhibiting better thermal stability. Oxidization was identified as a restricting issue for high-temperature applications in ambient environment.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
M. Rahayi, M. H. Ehsani, Agnes C. Nkele, M. M. Shahidi, Fabian I. Ezema
Summary: Tin (IV) oxide, SnO2 films were successfully synthesized in argon gas using a magnetron sputtering device. The films exhibited compact nano grained morphologies with tetragonal structure and high absorbance. Increasing the annealing temperature led to a slight rise in the bandgap energies of the deposited samples, and the films showed good photoluminescence features.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Environmental Sciences
Lucas Kurzweg, Sven Schirrmeister, Maurice Hauffe, Yasmin Adomat, Martin Socher, Kathrin Harre
Summary: This study presents a potential method for comprehensive microplastic monitoring in river sediments, combining electrostatic separation, density separation, and differential scanning calorimetry. The method allows for efficient processing of large sample masses and robust results, overcoming current limitations in microplastic analysis. It can be applied for monitoring microplastics in highly polluted sediments.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Polymer Science
Alireza Bahramian
Summary: In this study, the environmental sustainability, mechanical durability, and thermal stability of PET-based nanocomposite films were evaluated compared to pure PET. The addition of different nanoparticles had significant effects on the properties of the samples, with the interaction of SiO2NPs with PET chains showing the most promising improvement in sample performance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Santhosh Kumar Adpa, S. Shanmukharao Samatham, Radhamanohar Aepuru, Kalyani Date, Ravi Prakash Magisetty, Suwarna Datar, S. N. Kale, Rodrigo Espinoza Gonzalez, Vijaya Bhaskara Rao Bhaviripudi
Summary: Nanocrystalline Ni3Al thin films were deposited using DC magnetron sputtering and their electron transport mechanism and electromagnetic shielding properties were studied. STM was used to study the electron transport mechanism and barrier heights of the films. The barrier height of Ni3Al thin films decreased with sputtering power and the entire tunneling current appeared to come from Schottky emission. The electromagnetic shielding properties of the films were studied in the X-band region and showed increased shielding effectiveness with sputtering power.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Oncology
Gabriela Schneider, Alagammai Kaliappan, Taylor Q. Nguyen, Robert Buscaglia, Guy N. Brock, Melissa Barousse Hall, Crissie DeSpirito, Daniel W. Wilkey, Michael L. Merchant, Jon B. Klein, Tanya A. Wiese, Hiram L. Rivas-Perez, Goetz H. Kloecker, Nichola C. Garbett
Summary: Lung cancer is the most common malignancy worldwide and improving screening strategies is crucial due to limitations of current methods. Differential scanning calorimetry (DSC) shows promise in diagnosing lung cancer patients and correlating with survival rates, suggesting it as a potentially accurate, non-invasive, radiation-free screening tool.
Article
Materials Science, Multidisciplinary
Hyungmin Kim, Kyunghwan Kim, Jeongsoo Hong
Summary: In this study, NiO films were fabricated through radio frequency sputtering and processed via rapid thermal annealing to improve their properties. The results showed that the electrical, optical, and crystallographic properties of the NiO films were influenced by their oxygen content. Rapid thermal annealing can improve the crystallinity and mobility of the films, but it also reduces the oxygen content.
Article
Polymer Science
Yong-xuan Chen, Dong-shan Zhou, Wen-bing Hu
Summary: Differential scanning calorimetry (DSC) is an efficient tool for characterizing thermal properties and investigating thermal reactions of materials. Recent developments in DSC technique have greatly expanded the measurement range for polymer characterization. Temperature-modulated DSC (TMDSC) and fast scanning chip-calorimetry (FSC) are significant advances in DSC technology, introducing scanning rate perturbation and ultra-fast heating and cooling rates for measurements on micro- and nanogram scale samples.
ACTA POLYMERICA SINICA
(2021)
Article
Chemistry, Physical
Krystyna Ciesla, Marcela Grabowska
Summary: This study investigated the influence of treatment with HEMA supported by gamma irradiation on the physicochemical properties of starch:PVA films. The results showed effective grafting of HEMA onto the polymer matrix and the differences in thermal degradation and structural changes between the treated and untreated samples.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Myeng Gil Gang, Vijay C. Karade, Mahesh P. Suryawanshi, Hyesun Yoo, Mingrui He, Xiaojing Hao, In Jae Lee, Byeong Hoon Lee, Seung Wook Shin, Jin Hyeok Kim
Summary: Introducing a thin Ag layer on a metallic precursor in kesterite solar cells effectively improves device characteristics and performance in ACZTSSe solar cells, reducing the Voc-deficit and enhancing efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Vijay Karade, Eunyoung Choi, Myeng Gil Gang, Hyesun Yoo, Abhishek Lokhande, Pravin Babar, Jun Sung Jang, Jan Seidel, Jae Sung Yun, Jongsung Park, Jin Hyeok Kim
Summary: This study investigates the surface potential and the impact of compositional ratios on the device performance of kesterite-based thin-film solar cells. The findings suggest that at the optimal compositional ratio of Cu/(Zn+Sn) ≈ 0.6, there is a significant improvement in power conversion efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Hyesun Yoo, Jun Sung Jang, Seung Wook Shin, Jiwon Lee, JunHo Kim, Dong Myeong Kim, In Jae Lee, Byeong Hoon Lee, Jongsung Park, Jin Hyeok Kim
Summary: This study reveals the correlation between the reaction pathway and the point defects in the CZTSe film, showing that different reaction pathways lead to different device performances and defect energy levels. Additionally, the growth rates of different binary selenides during the annealing process have a significant impact on the formation of point defects.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Selina Goetz, Rachmat Adhi Wibowo, Martin Bauch, Neha Bansal, Giovanni Ligorio, Emil List-Kratochvil, Christian Linke, Enrico Franzke, Joerg Winkler, Markus Valtiner, Theodoros Dimopoulos
Summary: Dielectric/metal/dielectric (DMD) transparent electrodes have emerged as a compelling alternative to indium-tin-oxide (ITO) for solar cells and optoelectronic devices, especially on flexible substrates. The study investigates MoOx/metal/MoOx DMD electrodes with Ag and Au, showing higher figure-of-merit on PET substrates compared to evaporated electrodes. The electrodes with MoOx layers exhibit low stability in water but are stable in other solvents, and demonstrate enhanced mechanical stability compared to ITO in tensile bending tests.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Kuldeep Singh Gour, Vijay Karade, Jun Sung Jang, Eunae Jo, Pravin Babar, Sumit Korade, Hyesun Yoo, Sugil Kim, Dongmyung Kim, Jongsung Park, Jin Hyeok Kim
Summary: The addition of a p-type CuAlO2 (CAO) intermediate layer between molybdenum (Mo) and the absorber in CZTSSe devices improves device performance by improving absorber bulk quality, reducing Mo(S,Se)(2) layer thickness, and decreasing series resistance. This leads to an increase in short-circuit current density (J(SC)) and power conversion efficiency, compared to reference devices.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Michael Schoeler, Francesco La Via, Marco Mauceri, Peter Wellmann
Summary: This study identified three overgrowth mechanisms that contribute to the elimination of protrusion defects in cubic silicon carbide growth, with step-flow growth being a real elimination mechanism. The research categorized the overgrowth of protrusions for different types and qualities of substrates, providing valuable information for defect elimination in 3C-SiC.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Energy & Fuels
Anies Mutiari, Theodoros Dimopoulos, Martin Bauch, Ankit Mittal, Matthias Weil, Rachmat Adhi Wibowo
Summary: The study demonstrated the implementation of ultrathin dielectric/metal/dielectric layers of AZO/Ag/AZO as a transparent electrode in CZTS photovoltaic device, achieving high CZTS absorption without substrate heating. The optical simulations were used to design the optimum thickness of the layers, resulting in a transparent electrode with high transmittance, low sheet resistance, and high figure-of-merit.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Review
Chemistry, Physical
Francesco La Via, Massimo Zimbone, Corrado Bongiorno, Antonino La Magna, Giuseppe Fisicaro, Ioannis Deretzis, Viviana Scuderi, Cristiano Calabretta, Filippo Giannazzo, Marcin Zielinski, Ruggero Anzalone, Marco Mauceri, Danilo Crippa, Emilio Scalise, Anna Marzegalli, Andrey Sarikov, Leo Miglio, Valdas Jokubavicius, Mikael Syvajarvi, Rositsa Yakimova, Philipp Schuh, Michael Scholer, Manuel Kollmuss, Peter Wellmann
Summary: This review paper presents several new approaches for 3C-SiC growth, highlighting the challenges in obtaining devices with good electrical characteristics and the methods used to overcome these challenges. The new understanding of material defects and their interactions with growth parameters will be crucial in achieving the goal of obtaining a material with low defects and low stress for the realization of devices with extremely interesting characteristics.
Article
Chemistry, Multidisciplinary
Rachmat Adhi Wibowo, Katharina Rauchenwald, Stefan Edinger, Neha Bansal, Stefan Diebald, Daniel Habenbacher, Theodoros Dimopoulos
Summary: A flexible transparent heater with high transmittance and good conductivity is developed by using a sprayed composite architecture of silver nanowires and indium-doped zinc oxide layers. The low-temperature spray-pyrolysis process used for the zinc oxide layers ensures the thermal stability of the transparent polyimide substrate and the formation of compact and transparent layers. The resulting heater exhibits high temperature stability and fast heating response, and maintains good mechanical stability under different stresses. This research demonstrates the feasibility of large-scale and cost-effective production of high-performance transparent heaters using all-sprayed composite coatings.
Article
Materials Science, Multidisciplinary
Selina Goetz, Rachmat Adhi Wibowo, Martin Bauch, Neha Bansal, Giovanni Ligorio, Emil List-Kratochvil, Christian Linke, Enrico Franzke, Joerg Winkler, Markus Valtiner, Theodoros Dimopoulos
Summary: Recently, a transparent electrode called dielectric/metal/dielectric (DMD) based on MoO3 has been applied in solar cells and organic light-emitting diodes (OLEDs). However, the MoO3 layer is easily dissolved in water, which hinders its processing with water-based solutions. In this study, a DMD electrode based on mixed molybdenum-titanium-oxide (MTO) was introduced to improve the stability in water. The addition of titanium greatly increased the stability in water while maintaining the desirable electronic properties of MoO3. The DMD electrodes with a silver (Ag) metal layer were fabricated on both glass and polyethylene terephthalate (PET) substrates, showing low sheet resistance and high transmittance. The MTO stability enabled processing with water-based solutions without electrode degradation. The DMDs were also successfully produced on a wide PET foil using a roll-to-roll process, demonstrating its compatibility for large-scale industrial production.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Chemistry, Physical
Johannes Steiner, Peter J. Wellmann
Summary: The study investigated the impact of nitrogen incorporation on the initial phase of growth of 4H-SiC crystals, detecting doping concentration and stress using KOH etching and Raman spectroscopy. It was found that the altered thermal expansion coefficient caused by nitrogen doping plays a major role in the types and density of defects present in the grown crystal. Additionally, while the mounting method led to increased stress in the initial seeding phase, the overall stress induced by inhomogeneous nitrogen doping is orders of magnitude higher.
Article
Chemistry, Physical
Siwon Oh, Soo Yeon Lim, Dae-Ho Son, Jin-Kyu Kang, Hyesun Yoo, Dae-Hwan Kim, Hyeonsik Cheong
Summary: This study investigated the influence of the SnSe2 secondary phase on the performance of a solar cell. The research found that even with a small amount, the SnSe2 secondary phase has a critical impact on the characteristics of the solar cell. Controlling the formation of the SnSe2 secondary phase is identified as a crucial factor in obtaining high-efficiency CZTSSe solar cells.
ACS APPLIED ENERGY MATERIALS
(2022)
Review
Chemistry, Physical
Haiyan Ou, Xiaodong Shi, Yaoqin Lu, Manuel Kollmuss, Johannes Steiner, Vincent Tabouret, Mikael Syvajarvi, Peter Wellmann, Didier Chaussende
Summary: Silicon carbide (SiC) is rapidly advancing in novel photonic applications due to advancements in nanotechnologies and its exceptional optical properties. This review provides an introduction to the optical properties of SiC and discusses the importance of the silicon carbide on insulator stack (SiCOI) structure for light confinement and interaction in optical cavities. Various photonic cavities are summarized in terms of quality factor, volume, and polytypes. The review also addresses the challenges of CMOS compatibility and low-loss material growth for SiC photonic application. Lastly, the potential of SiC as a competitive platform for quantum photonic integrated circuits is discussed, along with its future prospects and impacts.
Article
Crystallography
Gaetano Calogero, Ioannis Deretzis, Giuseppe Fisicaro, Manuel Kollmuss, Francesco La Via, Salvatore F. Lombardo, Michael Schoeler, Peter J. Wellmann, Antonino La Magna
Summary: Multiscale approaches play an important role in materials processing simulation, offering cost reduction and performance enhancement. By integrating physical-chemical simulations and trained black-box techniques through digital twin modules, the real processes in development and production can be effectively complemented. This paper proposes a general paradigm for industrially driven computational modeling of materials using a multiscale methodology, which is demonstrated through two processing examples.
Article
Chemistry, Physical
Hyesun Yoo, Jongsung Park, Mahesh P. Suryawanshi, Jiwon Lee, JunHo Kim, Kiryung Eom, Hyungtak Seo, HyoRim Jung, Dong Myeong Kim, Seung Wook Shin, Jin Hyeok Kim
Summary: This study presents new insights into surface and interface engineering of CZTSe/CdS buffer in solar cells by in situ formed ZnSe nanoparticles, leading to improved device characteristics and junction qualities. The favorable band alignment and formation mechanism of in situ formed ZnSe NPs offer a simple and source-free interface engineering strategy to enhance the performance of kesterite solar cell devices.
JOURNAL OF MATERIALS CHEMISTRY A
(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)
