Article
Materials Science, Ceramics
Mehrnoush Nakhaei, Marcos A. L. Nobre, Davoud Sanavi Khoshnoud, Martin Bremholm, Hossein Ali Khonakdar
Summary: Crystalline and single-phase Y1-xScxFeO3 (x = 0, 0.5 & 1) nanoparticles were synthesized by sol-gel method. The nanocrystals had sizes ranging from 30 to 39 nm as determined by X-Ray Diffractometry (XRD). The morphology and surface characteristics of the samples were analyzed using Field Emission Scanning Electron Microscopy (FE-SEM) and energy dispersive spectroscopy (EDS). The magnetic properties of the samples exhibited antiferromagnetic and paramagnetic behaviors, while the electrical properties showed polarization-electric loops, dielectric constant changes, and dielectric loss through frequency and temperature. The band gap energy of YFeO3 and ScFeO3 was calculated to be 2.97 and 3.07 eV, respectively, using diffuse reflectance spectroscopy analysis.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Merve Zeyrek Ongun, Sibel Oguzlar, Salih Alper Akalin, Serdar Yildirim
Summary: Barium stannate (BaSnO3) particles were synthesized using one-step flame spray pyrolysis (FSP) and investigated for their structural, morphological, and optical properties. The synthesized particles were in the submicron size range and exhibited an optical bandgap value of 3.14 eV. The particles also showed emission bands in the visible and near-infrared region of the electromagnetic spectrum.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Tamanna Sharma, Maneesha Garg
Summary: In this study, ZnO nano powder was synthesized using the Sol-gel technique and characterized by various techniques. The results showed that the synthesized ZnO nano powder exhibited excellent chemical and thermal stability, consistent crystallite size, making it suitable for optoelectronic devices in both UV and visible regions.
Article
Materials Science, Multidisciplinary
Willians Lopes de Almeida, Nilson S. Ferreira, Fabiano Severo Rodembusch, Vania Caldas de Sousa
Summary: ZnO nanoparticles were successfully synthesized using cassava starch as a chelating agent. Analysis through XRD, FTIR, and TEM revealed the properties and structures of the synthesized nanoparticles. The results showed that the average size of the nanoparticles increased with the rise in calcination temperature, and the optical properties were affected accordingly.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Physics, Multidisciplinary
Ravindra N. Chikhale, S. A. Kanade, Pushpinder G. Bhatia
Summary: In this study, nanoparticles of Co0.75Ni0.25Fe2-zDyzO4 were prepared using the sol-gel auto-combustion method. The cation distribution and structure of the samples were confirmed, and the size and magnetic properties were investigated. The results showed that lattice strain affects the crystallite size and the nanoferrite exhibited ideal magnetic properties.
Article
Chemistry, Physical
Ivana Panzic, Ivana Capan, Tomislav Brodar, Arijeta Bafti, Vilko Mandic
Summary: Pure and Al-doped ZnO nanorods were prepared using a two-step method, showing a minute change in morphology upon doping. Al doping significantly increased the conductivity of ZnO nanorods, with different electric conduction mechanisms observed at higher voltages. Consideration of the geometry change of Al-doped ZnO nanorods is important for their overall electric transport properties in future applications.
Article
Engineering, Electrical & Electronic
Edgar R. Lopez-Mena, Sergio J. Jimenez-Sandoval, Omar Jimenez-Sandoval
Summary: Zinc oxide thin films doped with samarium were prepared by the Sol-gel technique in a simple and efficient way, resulting in nanocrystalline films with potential applications in optoelectronic devices.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Divyarajsinh Zala, Davit Dhruv, Faizal Mirza, Neeta A. Bhammar, Hardik Gohil, Himanshu Dadhich, Alpa Zankat, K. N. Rathod, Sanjay Kansara, A. D. Joshi, P. S. Solanki, N. A. Shah
Summary: In this study, CdO-ZnO core-shell nanoparticles were successfully synthesized and characterized using various techniques including XRD, FESEM, HRTEM, UV-Visible spectroscopy, Raman spectroscopy, and impedance spectroscopy. The results showed that the synthesized nanoparticles had a uniform structure, stable morphology, and specific optical and electrical properties.
Article
Materials Science, Multidisciplinary
Tulay Yildiz, Nida Kati, Busra Gul
Summary: CuO-CdO nanomaterials were synthesized through sol gel spin coating and hydrothermal methods. Thin films and nanopowders of undoped CdO and 0.2%, 0.5%, 1%, and 2% CuO doped CdO were produced and analyzed for their structural, optical, and electrical properties. The results showed that both the thin films and nanopowders had polycrystalline face-centered cubic structures. The thin films exhibited homogeneous and dense rod-shaped structures, while the nanopowders had urchin-like structures composed of spherical nanoparticles.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Materials Science, Ceramics
R. Pena-Garcia, Y. Guerra, S. Castro-Lopes, Y. M. Camejo, Joao M. Soares, A. Franco, E. Padron-Hernandez, M. Cabrera-Baez
Summary: This study analyzed the effects of Sr and Ni doping on the morphological, electronic, and magnetic properties of ZnO nanoparticles, revealing differences in particle shapes, lattice structure changes, and magnetic contributions.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Rohi Zahra, M. Anis-ur-Rehman
Summary: The structural, electrical and dielectric properties of lithium doped magnesium ferrite nanoparticles were studied. The results showed that the doped samples exhibited improved conductivity and stability, making them suitable for applications in environmental, industrial and biomedical fields.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Multidisciplinary
Muhammad Zahid, Hasan M. Khan, Aziz Ur Rehman, Abdul Waheed, Imran Sadiq, Ehsan Mazhar, Mohammed A. Assiri, Muhammad Imran, Muhammad Inam Ur Rehman, Mujahid Mustaqeem
Summary: In this study, chromium-doped M-type hexaferrites were prepared using sol-gel auto-combustion technique and characterized using XRD and SEM. The results showed that lattice parameters, crystallite size, and cell volume decreased with increasing Cr3+ concentration, while dielectric constant increased gradually. These samples are suitable for high frequency applications.
Article
Chemistry, Physical
N. H. Alonizan
Summary: Pure and Al-doped ZnO nanoparticles were synthesized using hydrothermal technique. The structural and phase analysis showed that Al doping increased the crystallite size and caused compressive stress formation in the material network. Other studies investigated the impact of different Al doping ratios on powder morphology, optical bandgap, and electronic defects localized in the material band-gap.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Ahmed Fattah Abdulrahman, N. M. Abd-Alghafour, Sabah M. Ahmed
Summary: In this study, ZnO nanorods were grown on glass substrates using the CBD method and the effects of SILAR process cycles on their properties were investigated. Different SILAR cycles led to increased size and length of ZnO NRs, affecting their growth rate and crystal size. The fabricated ZnO NRs showed good optical properties and potential applications for UV detectors.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Jannat Hammouche, Kais Daoudi, Soumya Columbus, Rania Ziad, Krithikadevi Ramachandran, Mounir Gaidi
Summary: The study investigated the photocatalytic degradation of organic dyes using nickel doped zinc oxide decorated silicon nanowires, showing that nickel doping slightly enhances the degradation efficiency. The developed structure stands as promising candidates as efficient, cost-effective and reusable photocatalytic systems.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Polymer Science
Tengku Nur Atiqah Bt Tengku Ab Mutalib, Soo Jin Tan, Kai Loong Foo, Yun Ming Liew, Cheng Yong Heah, Mohd Mustafa Al Bakri Abdullah
Summary: Polyaniline/graphene oxide (PANI/GO) composites with different weight percentages of GO were prepared via solution method. The presence of PANI and GO characteristics, as well as the interactions between them in the composites at different GO loadings, were confirmed based on FT-IR, XRD and SEM results. The decrease in conductivity was attributed to the weak pi-pi interactions or agglomeration of GO, causing disruption in electron movement within the composites.
Article
Energy & Fuels
Muhammad Kashif, Erdawaty Jafaar, Siti K. Sahari, Foo W. Low, Nguyen D. Hoa, Awais Ahmad, Anees Abbas, Zainab Ngaini, Muhammad Shafa, Ahsanulhaq Qurashi
Summary: Introducing a new organic compound K-Azo enhances the electrical and optical performance of graphene oxide and reduced graphene oxide nanostructured films. The presence of the organic sensitizer significantly improves the conductivity of the thin films, offering potential applications in photovoltaic solar cells. The long-range pi-electron delocalization in the organic sensitizer contributes to the improved conductivity of the graphene oxide and reduced graphene oxide films.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Inorganic & Nuclear
Ong Huey Li, Liew Yun-Ming, Heah Cheng-Yong, Ridho Bayuaji, Mohd Mustafa Al Bakri Abdullah, Foo Kai Loong, Tan Soo Jin, Ng Hui Teng, Marcin Nabialek, Bartlomiej Jez, Ng Yong Sing
Summary: The properties of amorphous geopolymer with silica fume addition after heat treatment were rarely reported. Geopolymer with 2% silica fume did not show significant improvement in compressive strength, while 4% decreased it. However, geopolymer with 2% silica fume retained higher compressive strength at 1000 degrees C.
Article
Chemistry, Multidisciplinary
Muhammad Kashif, Erdawaty Jaafar, Poonam Bhadja, Foo Wah Low, Siti Kudnie Sahari, Shahid Hussain, Foo Kai Loong, Awais Ahmad, Tahani Saad AlGarni, Muhammad Shafa, Humaira Asghar, Saad A. Al-Tamrah
Summary: This study investigated the effect of Potassium Permanganate (KMnO4) on the properties of graphene oxide (GO), particularly its electrical properties. Different amounts of KMnO4 oxidizing agent were found to affect the conductivity, morphology, optical properties, and crystalline structure of the GO thin films. The results suggest that GO has potential for use in electrical and electronic devices.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
A. L. Teoh, M. A. A. Mohd Salleh, D. S. C. Halin, K. L. Foo, N. R. Abdul Razak, H. Yasuda, K. Nogita
Summary: This study investigated the microstructure, thermal behaviors, and joint strength of Sn-0.7Cu-1.5Bi solder alloy on electroless nickel immersion gold (ENIG) surface finish. The addition of 1.5 wt% Bi resulted in a decrease in size of primary (Cu,Ni)(6)Sn-5 intermetallic compounds (IMCs) and increased shear strength of the solder joint. The results indicated that microstructural changes, especially the reduction in size of IMCs, in Sn-0.7Cu-1.5Bi/ENIG had a significant impact on joint strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Chemical
K. Foo, Y. Y. Liang, C. K. Tan, G. A. Fimbres Weihs
Summary: This study used CFD to simulate the effect of different spacer profiles and configurations on flux enhancement generated by unsteady shear strategies, and found that combining a submerged spacer with forced-slip resulted in the largest flux increase.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Usman Bashir Tayab, Junwei Lu, Fuwen Yang, Tahani Saad AlGarni, Muhammad Kashif
Summary: The concept of microgrid integrates conventional generators, different renewable energy resources, and energy storage systems to meet specific load demands. However, the intermittent nature of renewable energy causes a variance in output, leading to an imbalance between power generation and demand. An energy management system is needed to manage the flow of electricity among different energy resources, while ensuring cost-effective operation.
Article
Materials Science, Multidisciplinary
Ooi Wan-En, Liew Yun-Ming, Heah Cheng-Yong, Mohd Mustafa Al Bakri Abdullah, Long-Yuan Li, Li Ngee Ho, Foo Kai Loong, Ong Shee-Ween, Ng Hui-Teng, Ng Yong-Sing, Nur Ain Jaya
Summary: This study investigates the effects of different solid alkali activators on one-part geopolymers, finding that the choice of activator significantly affects the properties and microstructural changes of the OPGs. Despite the differences, all the OPGs studied are suitable for building material applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Analytical
Ramesh Thevendran, Kai Loong Foo, Mohd Hazwan Hussin, Emmanuel Jairaj Moses, Marimuthu Citartan, Haarindraprasad Rajintra Prasad, Solayappan Maheswaran
Summary: The study developed an efficient DNA biosensor for the detection of AML caused by FLT3-ITD mutations. The biosensor demonstrated high sensitivity and stability, making it a promising tool for rapid and low-cost diagnostic applications.
Article
Crystallography
Muhammad Kashif, Norah Salem Alsaiari, Erdawaty Jaafar, Foo Wah Low, Cheen Sean Oon, Siti Kudnei Sahari, Nayef S. Almuaikel
Summary: A modified Hummer's method was used to synthesize graphene oxide (GO) in a reaction-time-dependent manner, and the drop-casting method was used to coat GO films on a glass substrate. Various techniques were employed to study the morphological, structural, optical, and electrical properties of GO. It was found that the amount of oxygen functional groups and the resistivity of the as-deposited films increased with increasing reaction time. Based on morphological and optical data, the optimized reaction time was determined to be 48 hours.
Article
Physics, Multidisciplinary
Eli Danladi, Muhammad Kashif, Thomas O. Daniel, Christopher U. Achem, Matthew Alpha, Michael Gyan
Summary: Replacing liquid electrolyte with copper (I) thiocyanate (CuSCN) can enhance the performance of dye sensitized solar cells. By optimizing input parameters, higher power conversion efficiency, short circuit current density, and open circuit voltage can be achieved.
EAST EUROPEAN JOURNAL OF PHYSICS
(2022)
Article
Energy & Fuels
Eli Danladi, Muhammad Kashif, Andrew Ichoja, Bikimi Bitrus Ayiya
Summary: This study performed numerical modeling and simulation of hole transport material (HTM)-free perovskite solar cells (PSCs) based on methyl ammonium tin triiodide. The effect of different parameters on the photovoltaic performance of the device was explored and optimized. The optimized device showed significant improvements in power conversion efficiency, short-circuit current density, and open circuit voltage compared to the unoptimized device.
TRANSACTIONS OF TIANJIN UNIVERSITY
(2023)
Proceedings Paper
Nanoscience & Nanotechnology
Farehanim Syukhairiyah Mohd Akhir, Foo Kai Loong, Tan Soo Jin, Uda Hashim, Chun Hong Voon, Mohamad Azman Abu Hassan
Summary: The study introduced a method for fabricating highly uniform IDEs devices using conventional photolithography, and characterized their structure optically using high power microscope and scanning electron microscope. Electrical measurements were conducted on the fabricated IDEs devices at different pH values, with the highest current of 96 nA observed at pH 10. This study establishes a correlation between the structural and electrical properties of Al IDEs thin films with varying pH levels.
2021 IEEE INTERNATIONAL CONFERENCE ON SENSORS AND NANOTECHNOLOGY (SENNANO)
(2021)
Article
Nanoscience & Nanotechnology
Phey Yee Foong, Chun Hong Voon, Bee Ying Lim, Mohd Khairuddin Md Arshad, Subash C. B. Gopinath, Kai Loong Foo, Ruslinda A. Rahim, Uda Hashim
Summary: This study proposed the use of multiwalled carbon nanotubes as susceptors for microwave welding of high-density polyethylene. The research found that the joint strength increased with the heating duration up to 8 seconds, but decreased at 10 seconds due to the formation of voids at the joint interface. Additionally, the joint strength increased with the concentration of multiwalled carbon nanotubes in the dispersion up to 0.75 wt%, but decreased with a concentration of 1.00 wt% due to the presence of an unwelded nanotube layer at the joint interface.
NANOMATERIALS AND NANOTECHNOLOGY
(2021)
