Review
Chemistry, Inorganic & Nuclear
Martina Lippi, Massimo Cametti
Summary: This article highlights the main advances in using one-dimensional coordination polymers for adsorption and separation purposes, focusing on larger guest molecules and charged dyes or ions. In most cases, the adsorption processes induce significant structural changes in the CPs framework, as shown by extensive X-ray characterization. The dynamic properties of these compounds in responding to external chemical stimuli are inherent in their structural features, composed of chain-like arrays held together by weak inter-chain interactions.
COORDINATION CHEMISTRY REVIEWS
(2021)
Article
Materials Science, Ceramics
Pallavi Suhasinee Behera, Sunipa Bhattacharyya
Summary: Mullite ceramic was prepared by the combustion route with TiO(2) and MgO additives, showing enhanced properties in terms of density and strength. The addition of TiO(2) at 1 wt% resulted in higher bulk density and maximum strength, while the addition of MgO at 1 wt% favored mullite growth, achieving similar density and strength as the TiO2-containing batch.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Article
Materials Science, Composites
Yalin Zhao, Zhixiong Wu, Shibin Guo, Zhengrong Zhou, Zhicong Miao, Shiyong Xie, Rongjin Huang, Laifeng Li
Summary: The HPB-GO nanocomposite prepared by grafting hyperbranched polymer exhibits excellent mechanical and thermal properties, improving the application performance of epoxy resin.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Shrabani Paul, Umapada Pal, Swapan Kumar Pradhan
Summary: Antimony telluride nanoparticles of different sizes were fabricated by mechanical alloying and annealing, and their grain growth, electrical, and thermoelectric properties were studied. Thermal annealing significantly improved electrical conductivity and thermoelectric figure of merit, while reducing grain size improved the thermoelectric performance by lowering thermal conductivity. The temperature-dependent Lorenz number was used to analyze the electronic contribution to total thermal conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Bing-Yen Wang, Steven Hsu, Chia-Man Chou, Tair- Wu, Vincent K. S. Hsiao
Summary: The addition of nanomaterials, such as graphene and graphene oxide, can enhance the mechanical properties of hydroxyapatite nanocomposites. By using ultra-high shear force to achieve nano-sized mixtures and a low-temperature spark plasma sintering process, improved mechanical properties can be obtained. The potential applications of these improved r-GO/HA nanocomposites include dentistry, plasma spray-coatings, and orthopedic 3D printing.
Article
Materials Science, Multidisciplinary
Nethmi De Alwis Watuthanthrige, Derrick Dunn, Madison Dolan, Jessica L. Sparks, Zhijiang Ye, Mehdi B. Zanjani, Dominik Konkolewicz
Summary: Dynamic materials with interpenetrating networks (IPNs) show excellent stress relaxation, self-healing, and adhesive properties, where the network architecture and dynamic bond compositions play crucial roles in determining the thermomechanical properties. The synergetic effects of quadrupole hydrogen (H) bonding and thiol-Michael (TM) bonding enhance the strength and creep resistance, while improving adhesive properties in IPN materials.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Materials Science, Ceramics
Yu Sun, Hai-Rong Mao, Ping Shen
Summary: This study proposes a simple strategy of adding Al2O3 to overcome the sintering inhomogeneities in high-entropy pyrochlore-structured ceramics during flash sintering. The reaction between Al2O3 and rare earth ions in the ceramic improves the sintering homogeneity and enhances the mechanical properties of the composite ceramic. The use of this internal reaction provides an economical and effective approach to prevent hotspot formation during flash sintering.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Yongxia Li, Jiaxin Shi, Chao Man, Jiayi Han
Summary: Dense silicon nitride composites were fabricated using multi-step spark plasma sintering (SPS) with the addition of 6 wt% Mo as the induced phase. The composites exhibited improved mechanical properties and lower thermal diffusivity compared to samples sintered with 7 mol% CeO2. This was attributed to the fully phase transformation and abnormal growth of large β-Si3N4 grains during the SPS process.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Chemistry, Physical
Jin Hu, Shufen Zhang, Bingtao Tang
Summary: 2D materials show great potential in dielectric and energy storage applications, with electrically conductive fillers enhancing dielectric constant and dielectric loss, while highly-insulating fillers improve breakdown strength and energy storage capacity of PNDs. Different filler and system designs can further enhance the properties of PNDs.
ENERGY STORAGE MATERIALS
(2021)
Article
Materials Science, Ceramics
Bin Hu, Wuyou Zou, Weidong Wu, Jianlin Tang, Rong Chen, Huaming Zhou, Chun Du, Bin Shan
Summary: The study demonstrates that MgO modified titania ceramic can achieve high-quality DLP printing, with MgTi2O5 formed to reduce stress concentration and improve mechanical properties. However, an excessive MgO content can hinder ceramic grain growth.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Yoko Yamabe-Mitarai, Ko Yanao, Yoshiaki Toda, Ikuo Ohnuma, Tetsuya Matsunaga
Summary: This study focuses on the phase stability of Ti-containing high-entropy alloys, specifically the Ti34Al33V33 and Ti34Zr33Hf33 alloys. By introducing additional elements and analyzing the formation energy and valence electron concentration, the stability of the hexagonal close-packed (hcp) structure in high-entropy alloys is revealed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Sanjib Sau, Sarathi Kundu
Summary: Polymer-silver nanocomposites are promising functional materials with unique optical, antibacterial, and electrical properties. The PVA-silver nanocomposite films prepared by solution casting and heat treatment show time-dependent growth of silver nanoparticles and changes in structural, optical, and mechanical properties. The electrical resistivity of the composite films increases with heating time, due to the generation of more silver nanoparticles.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Multidisciplinary
Chuanxin Wei, Lubing Bai, Xiang An, Man Xu, Wei Liu, Weizhe Zhang, Manjeet Singh, Kang Shen, Yamin Han, Lili Sun, Jinyi Lin, Qiang Zhao, Yujian Zhang, Yingguo Yang, Mengna Yu, Yinxiang Li, Ning Sun, Yufeng Han, Linghai Xie, Changjin Ou, Bo Sun, Xuehua Ding, Chunxiang Xu, Zhongfu An, Runfeng Chen, Haifeng Ling, Wen Li, Jianpu Wang, Wei Huang
Summary: This study demonstrates the atomic-resolved structural perturbations of an elastic conjugated molecular crystal, achieving flexible naked-eye-visible and color-tunable afterglow wave guides. The outstanding elastic property of the crystal is derived from the synergistic effect of interlayer hierarchical slippage and intralayer molecule perturbations, allowing for the absorption and release of mechanical energy to avoid brittle fracture. The observations provide insights into the photophysical behavior of conjugated materials and the potential application of elastic crystals in flexible organic photonics.
Article
Materials Science, Multidisciplinary
Joseph Raj Xavier
Summary: A novel multilayer polymeric epoxy coating containing graphene oxide wrapped molybdenum carbide nanoparticles was successfully synthesized. The coating exhibited excellent corrosion protection and enhanced hydrophobicity on mild steel. Additionally, the coating showed significant mechanical properties, with a higher hardness value.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Agricultural Engineering
Dong-Mei Xie, Xiao-Li Zhao, Yi-Dong Li, Yunxuan Weng, Jian-Bing Zeng
Summary: This study successfully synthesized castor oil-based dynamic polymer networks with good mechanical properties, reprocessability, and recyclability. The networks also showed excellent solvent resistance, thermal stability, and durability. This provides important guidance for the synthesis of vegetable oil derived polymer networks that integrate tunable mechanical properties, reprocessability, and recyclability.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Automation & Control Systems
Jingjing Liu, Noor Azuan Abu Osman, Mouaz Al Kouzbary, Hamza Al Kouzbary, Nasrul Anuar Abd Razak, Hanie Nadia Shasmin, Nooranida Arifin
Summary: The paper discusses the importance of selecting and optimizing suitable elastic actuators in the design of powered ankle-foot prostheses, proposing a method to effectively reduce peak mechanical power and mean energy consumption power by optimizing with different elastic elements. The experiments found that UPEA and SE+UPEA both significantly improved in performance after optimization, recommended as the selection basis for the design of powered ankle-foot prostheses.
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
(2022)
Review
Rehabilitation
Nur A. Hashim, Nasrul A. Abd Razak, Thilagavathi Shanmuganathan, Rafidah A. Jaladin, Hossein Gholizadeh, Noor A. Abu Osman
Summary: The study suggests that the research quality on virtual reality technology in the rehabilitation of individuals with upper limb loss is low, indicating the need for improvements in research protocols and evaluation of existing devices. Most studies have utilized inadequate design and there is a call for more rigorous randomized controlled trials.
EUROPEAN JOURNAL OF PHYSICAL AND REHABILITATION MEDICINE
(2022)
Article
Engineering, Mechanical
Aina Munirah Ab Rasid, Azlina Musa, Muhammad Amirul Abdullah, Anwar P. P. Abdul Majeed, Mohd Azraai Mohd Razmaan, Mohamad Razali Abdullah, Noor Azuan Abu Osman, Rabiu Muazu Musa
Summary: Recent advances in sports technology have allowed sports engineers to create a customised data collection system using inertial measurement units (IMUs). This study investigated the reliability of a custom-made IMU system in evaluating skateboarding manoeuvres and found that the system was reliable in measuring skateboarding tricks performances.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART P-JOURNAL OF SPORTS ENGINEERING AND TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Jingjing Liu, Noor Azuan Abu Osman, Mouaz Al Kouzbary, Hamza Al Kouzbary, Nasrul Anuar Abd Razak, Hanie Nadia Shasmin, Nooranida Arifin
Summary: Planar spiral springs are crucial for miniaturizing motor-based elastic actuators. However, the stiffness calculation of the spring arms using beam bending theory leads to significant errors compared to finite-element analysis (FEA) results. This study trains two Gaussian process regression models to correct this error term in the stiffness calculation of spring arms and complete springs. The models are validated through simulations and the design and manufacture of a planar spiral spring for a powered ankle-foot prosthesis.
SCIENTIFIC REPORTS
(2022)
Article
Biochemical Research Methods
Gustavo A. Orozco, Kalle Karjalainen, Eng Kuan Moo, Lauri Stenroth, Petri Tanska, Jaqueline Lourdes Rios, Teemu Tuomainen, Mikko J. Nissi, Hanna Isaksson, Walter Herzog, Rami K. Korhonen
Summary: In this study, a musculoskeletal finite element model of a rat knee joint was used to evaluate cartilage biomechanical responses during a gait cycle. The results showed that simulating anatomical and locomotion characteristics accurately estimated tissue responses such as contact pressures, stresses, strains, and fluid pressures. This approach is important for investigating the effects of gait abnormalities on the adaptation and degeneration of rat knee joint tissues and could contribute to understanding the biomechanically-driven mechanisms of osteoarthritis progression as a consequence of joint injury or obesity.
PLOS COMPUTATIONAL BIOLOGY
(2022)
Article
Polymer Science
Jingjing Liu, Muhammad Awais Naeem, Mouaz Al Kouzbary, Hamza Al Kouzbary, Hanie Nadia Shasmin, Nooranida Arifin, Nasrul Anuar Abd Razak, Noor Azuan Abu Osman
Summary: 3D printing is the optimal method for producing frame parts of powered ankle-foot prostheses, but the compressive strength of the 3D-printed parts must be ensured. This study investigates the impact of infill pattern and density on compressive strength, using a carbon fiber-reinforced nylon material and following ASTM D695 compression test standard. Results show that specimens with higher mass exhibit greater compressive strength, and triangular fill patterns offer higher compressive strength than rectangular and gyroid fills at the same mass. Compared to solid fill specimens, triangular fill specimens provide more compressive strength per unit mass. Based on the findings, a 41% triangular fill is chosen for manufacturing the supporting part of the powered ankle-foot prosthesis, meeting the design requirements with a strain of 1.32 +/- 0.04% under a compressive load of 1225 N. This study provides evidence for the application of 3D printing in other contexts requiring compressive strength.
Article
Chemistry, Physical
G. S. Sahoo, C. Harini, N. Mahadevi, P. S. Nethra, A. Tripathy, M. Verma, G. P. Mishra
Summary: Increasing global demand for energy requires more stable and efficient forms of energy. Solar energy is the only viable renewable energy source that can meet this growing demand. This research introduces CuO as a tunnel oxide passivated layer to improve the efficiency of solar cell devices.
Article
Multidisciplinary Sciences
Nik Abdul Muiz Nik Zainuddin, Nasrul Anuar Abd Razak, Mohd Sayuti Ab Karim, Noor Azuan Abu Osman
Summary: This study aims to determine the optimal ratio of epoxy and acrylic resin for laminated prosthetic sockets and evaluate the surface roughness of different combinations. The results show that epoxy resin produces a smoother surface compared to acrylic resin, making it a better choice for fabricating laminated sockets.
SCIENTIFIC REPORTS
(2023)
Article
Hospitality, Leisure, Sport & Tourism
Azrena Zaireen Ahmad Zahudi, Juliana Usman, Noor Azuan Abu Osman
Summary: The aim of this study was to investigate the effect of hand dimensions and selected anthropometric characteristics on handgrip strength in recreational tenpin bowlers. The results showed that body height and the minimum breadth of the right hand had a significant impact on handgrip strength. There was a significant difference in handgrip strength between males and females, with males showing greater strength.
PEDAGOGY OF PHYSICAL CULTURE AND SPORTS
(2023)
Article
Health Care Sciences & Services
Mohd Khairuddin Mohd Safee, Noor Azuan Abu Osman
Summary: This study aimed to investigate the correlation between muscle fatigue and postural stability and fall risk. The results showed a significant increase in postural stability index (OSI) after fatigue, while no significant difference was found for APSI and MLSI. Fall risk did not show significant differences, but there was an increase in mean score data after fatigue. The correlation analysis revealed a positive correlation between OSI and fall risk, and a significant negative correlation between MLSI and APSI.
HEALTHCARE IN LOW-RESOURCE SETTINGS
(2023)
Article
Engineering, Electrical & Electronic
Sarbasri Halder, Satyanarayan Bhuyana, Ashis Tripathy, Omar Al Zaabi, Biswaranjan Swain, Utkal Ranjan Muduli
Summary: A capacitive temperature sensor based on a lead-free ferroelectric ceramic Bi(Fe2/3Ta1/3)O-3 (BFT) has been designed and developed using solid-state sintering technique. Compared to conventional sensors, the BFT-based sensor exhibits high sensitivity, fast response and recovery times, low hysteresis, and excellent repeatability.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Physical
Md Julker Nine, Alena Chizhova, Shaheer Maher, Ashis Tripathy, Arash Mazinani, Mahnaz Dadkhah, Kamrul Hassan, Pei Lay Yap, Tran T. Tung, Dusan Losic
Summary: Subzero temperatures cause ice-fouling on solid surfaces, which economically affects multiple industries. Surface chemistry modifications delay icing, but the limitations of slippery and superhydrophobic surfaces in preventing ice adhesion are not well understood.
SURFACES AND INTERFACES
(2023)
Article
Computer Science, Information Systems
Khaled Nedal Mahmoud Sobh, Nasrul Anuar Abd Razak, Noor Azuan Abu Osman
Summary: The assessment of residual limb muscles in amputees is crucial for rehabilitation, and a new cuff system using force-sensitive resistor sensors has been developed to measure muscle contraction. Tightness of the cuff was identified as an issue that may affect activities during testing.
Article
Education & Educational Research
Abdul Hafaz Ngah, Nurul Izni Kamalrulzaman, Mohamad Firdaus Halimi Mohamad, Rosyati Abdul Rashid, Nor Omaima Harun, Nur Asma Ariffin, Noor Azuan Abu Osman
Summary: This study explored the factors influencing students' willingness to continue with the online learning system during the COVID-19 pandemic and found that students' e-learning readiness, performance, and satisfaction have a positive impact on their willingness.
RESEARCH AND PRACTICE IN TECHNOLOGY ENHANCED LEARNING
(2022)
