Article
Chemistry, Multidisciplinary
Xiang Yu, Tianyu Yang, Ruoshui Liu, Di'an Wu, Daming Tian, Tianshi Zhou, Haitao Yan, Shuli He, Hao Zeng
Summary: In this study, the efficiency of alternating current magnetic field and near-infrared heating is enhanced by co-doping Zn and Co in magnetite nanoparticles. Optimum magnetic anisotropy is achieved by tuning the doping concentration to maximize the loss power under each magnetic field. The specific loss power of the nanoparticles greatly exceeds previous levels, making it a promising nanoplatform for multi-modal local hyperthermia therapy.
Article
Engineering, Electrical & Electronic
Zulfiqar, Saeed Ur Rahman, Tahirzeb Khan, Rajwali Khan, Gulzar Khan, Shaukat Khattak, Nasir Rahman, Shahid Ali, Tang Hua
Summary: Different nanoparticles (NPs) were prepared using the co-precipitation route, with Co and Ni incorporated into the SnO2 matrix. The XRD data showed a reduction in crystallite size and an increase in oxygen vacancies concentration with higher Co content. The dielectric properties were strongly influenced by doping, with S4 NPs exhibiting the highest values for dielectric loss factor and AC conductivity.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Renpeng Yang, Xiaogang Yu, Heng Li, Chao Wang, Chengwei Wu, Wei Zhang, Weihong Guo
Summary: Mg2+ substitution can increase the Curie temperature and specific saturation magnetization of the nanoparticles within a certain range, leading to improved heating efficiency and low cytotoxicity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Mohamed A. Gabal, Dina F. Katowah, Mahmoud A. Hussein, A. A. Al-Juaid, Ayman Awad, A. M. Abdel-Daiem, Abdu Saeed, Mahmoud M. Hessien, Abdullah M. Asiri
Summary: Nanocrystalline metal ferrites (CoFe2O4, M = Co, Ni, Cu, Mg, and Zn) were successfully synthesized using egg white via autocombustion synthesis. Characterization through XRD, FTIR, and TEM showed different structural properties and magnetic behaviors influenced by the metal ions, with semiconducting characteristics observed. The obtained low dielectric constant values suggest potential high-frequency applications for the synthesized ferrites.
Article
Materials Science, Multidisciplinary
Soumyaditya Sutradhar, Atul Bandyopadhyay
Summary: Cu-substituted Co-Zn ferrite nanoparticles were prepared by the sol-gel method and incorporated into a mullite matrix, showing high magnetic orderings and dielectric permittivity in the nanocomposites, indicating potential applications in various magneto-dielectric devices.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Rajinder Kumar, P. B. Barman, Ragini Raj Singh
Summary: The newly developed Direct Non-Aqueous method efficiently prepares Co-doped Ni-Zn spinel ferrite nanoparticles with excellent properties for various applications, such as targeted drug delivery and magnetic applications.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
Zaizhi Yang, Pengbo Wang, Zhentao Wang, Juan Liu, Lei Zhang, Sujuan Zhong, Bin Tang, Dong Xu
Summary: In this study, the challenge of high-temperature and long-time sintering of (Zn, Ta) co-doped TiO2 ceramics is successfully solved using flash sintering technology. Flash sintered samples demonstrated high permittivity and low dielectric loss, supporting the prospect of green preparation of co-doped TiO2 giant dielectric ceramics.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Khalid Mujasam Batoo, Muhammad Hadi, Ankush Chauhan, Ritesh Verma, Mahavir Singh, Omar M. Aldossary, Gagan Kumar Bhargava
Summary: In this study, single-phase nanoparticles of Bi3+-doped cobalt zinc ferrite were successfully synthesized and their magnetic and dielectric properties were investigated. The magnetic studies showed that the saturation magnetization and magnetocrystalline anisotropy of the samples decreased due to the spin canting effect caused by the Bi ions. Meanwhile, the dielectric constant decreased and the permeability increased with the substitution of Bi3+ ions.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Gurkan Kavuran, Turan Gurgenc, Fatih Ozkaynak
Summary: This study proposes a methodology of electrochemical capacitor modeling using fractional-order impedance equation for porous electrodes fabricated with pure and Ag-doped SnO2 nanoparticles. The study demonstrates the advantages of fractional-order modeling in simulating real systems and highlights the improved electrical performance of Ag-doped SnO2 electrodes.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Physics, Multidisciplinary
C. L. Valente-Rodrigues, Richard J. Caraballo-Vivas, Evelyn C. S. Santos, Surender K. Sharma, Flavio Garcia
Summary: This study focuses on controlling the Curie temperature (TC) in the range of 42-46°C in magnetic hyperthermia therapy. By synthesizing Zn-Co nanoparticles with precise Cr3+ ion tuning, the self-regulation of TC can be achieved. The composition Zn0.54Co0.46Cr0.4Fe1.6O4 shows excellent magnetic hyperthermia effects, with the potential to automatically activate self-regulation in the safe temperature range.
Article
Multidisciplinary Sciences
N. M. Basfer, Nuha Al-Harbi
Summary: Ce-doped cobalt-magnesium ferrite nanophotocatalysts prepared by the combustion approach show high efficiency in degrading harmful dyes. The hue of methylene blue can be faded from blue to nearly colorless with a degradation efficiency of 95.49% in 60 minutes.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Punit Kumar Sharma, O. P. Pandey
Summary: In this study, CdS heterostructures doped with Zn and co-doped with (Y, Zn) CeO2 were successfully synthesized using co-precipitation method. The structural and morphological properties of the synthesized samples were characterized, and their photocatalytic activity was investigated. The results showed that CdS heterostructures synthesized with Zn-doped CeO2 exhibited efficient removal of crystal violet dye under UV-visible illumination.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Electrical & Electronic
Zein K. Heiba, Mohamed Bakr Mohamed, Noura M. Farag, Sameh Ahmed
Summary: In this study, Zn and Mn co-doped nano-NiFe2O4 (NFO) system was prepared and characterized, revealing significant effects of co-doping on the crystal structure and optical properties of NFO. The results showed that the nanocomposite samples emitted UV, violet, blue and green colors with photoluminescence intensity dependent on the amount of ZMO doping in the matrix.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Pedro Victor Valadares Romanholo, Thiago Eduardo Pereira Alves, Jhilmil Swapnalin, P. Banerjee, A. Franco Jr
Summary: Zinc substituted cobalt, magnesium and nickel ferrites were prepared using combustion reaction techniques. Zinc substitution led to an increase in crystal parameters and band shift in FTIR spectra. Magnetic measurement results showed that zinc substitution mainly occurred in tetrahedral site, and maximum saturation magnetization and anisotropy value were observed for the Co-CoZn pairs.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Physics, Condensed Matter
W. Akbar, I. Elahi, M. Zulfiqar, S. Nazir
Summary: Ab-initio calculations were used to explore the possibility of ferromagnetism in SnO2 through (Fe,TM= Sc, Ti, V, Cr, Mn, and Co) co-doping strategy. Results showed stable FM ground states in (Fe,Sc), (Fe,V), (Fe,Cr), (Fe,Mn), and (Fe,Co) co-doped SnO2 materials, with the highest magnetic transition temperature (Tc) of 884 K observed in the (Fe,Mn) co-doped system. Of particular interest is the half-metallic behavior exhibited in the (Fe,V) co-doped structure with a Tc of 207 K, making it a promising candidate for applications in magnetic memory devices.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Engineering, Electrical & Electronic
Rajwali Khan, Sattam Al Otaibi, Abdulrahman. J. J. Babqi, Nasir Rahman, Mohammad Sohail, Rabbim Mixlievich Yusupov, Sherzod Shukhratovich Abdullaev, Alamzeb Khan, Shahid Iqbal, Tommaso Del Rosso, Tahir, Quaid Zaman, Aurangzeb Khan
Summary: The influence of Ce and Co co-doping on the structural, dielectric, and magnetic properties of ZnO nanoparticles was investigated. The addition of Ce and Co improved the crystallinity and maintained the preferred orientation. The dopants had no influence on the morphology of the particles but reduced their size.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Rajwali Khan, Naveed Ur Rehman, Nasir Ilyas, Nourreddine Sfina, Mohamed Barhoumi, Alamzeb Khan, Khaled Althubeiti, Sattam Al Otaibi, Shahid Iqbal, Nasir Rahman, Mohammad Sohail, Asad Ullah, Tommaso Del Rosso, Quaid Zaman, Abid Ali Khan, Sherzod Sh. Abdullaev, Aurangzeb Khan
Summary: Electronic devices with biomimetic behavior, such as electronic synapses and neurons, have led to a new era in information and humanoid robotics technologies. A nickel-doped zinc oxide (NZO)/Au-based memristor is fabricated for artificial nociceptor applications, exhibiting various nociceptive functions depending on the external stimuli. This NZO-based device produces a multifunctional nociceptor performance that is essential for applications in artificial intelligence systems.
Article
Physics, Condensed Matter
Qianhui Mao, Yingying Xu, Ruixue Li, Yuan Wang, Haidong Li, Lisha Xue, Haoshan Hao, Rajwali Khan, Bin Chen, Jinhu Yang
Summary: The magnetic properties, magnetic entropy change, and critical behavior of Mn1/4+delta NbS2 single crystals were investigated. Two magnetic phase transitions were observed, and the effective magnetic moment and saturation moment were deduced. The magnetic entropy change exhibited two series of peaks, and the critical exponents were analyzed, indicating competing magnetic couplings in the crystal.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Engineering, Electrical & Electronic
Mudasser Husain, Nasir Rahman, Mongi Amami, Tahir Zaman, Mohammad Sohail, Rajwali Khan, Abid Ali Khan, Saima Ahmad Shah, Aurangzeb Saeedullah, Aurangzeb H. Khan, Ali Reshak, Nora Hamad Al-Shaalan, Sarah A. Alharthi, Saif A. Alharthy, Mohammed Amin, Vineet Tirth
Summary: In this study, the structural, optoelectronic, and mechanical properties of germanium based AGeF(3) (A = Ga and In) halides Perovskites were predicted for the first time using density functional theory computational approach. The compounds were found to have good structural stability, semiconductor nature, and potential for optoelectronic applications.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Physics, Multidisciplinary
Nasir Rahman, Mudasser Husain, Mohammad Sohail, Rajwali Khan, Tahir Zaman, Riadh Neffati, Ghulam Murtaza, Aurangzeb Khan, Abid Ali Khan, Zaffar Iqbal
Summary: In this study, the structural, optoelectronic, elastic, and thermoelectric properties of NaMF3 (M = Si and Ge) ternary halide perovskite compounds were investigated using first-principle modeling within the DFT framework. The results showed that these compounds are structurally and thermodynamically stable in the cubic phase. They exhibit favorable mechanical properties and are semiconductors with direct band gaps. The compounds also demonstrate strong optical conduction and absorption coefficients, making them suitable for high-frequency UV devices and potential applications in solar cells.
Article
Physics, Multidisciplinary
Mudasser Husain, Nasir Rahman, Mohammad Sohail, Rajwali Khan, Tahir Zaman, Riadh Neffati, Ghulam Murtaza, Ahmed Azzouz-Rached, Aurangzeb Khan
Summary: This work is based on the prediction of two new materials (InXF3 where X = Be and Sr) for high energy applications. The compounds possess a cubic crystal structure with an indirect band gap. This study opens new opportunities for further exploration in this field.
Article
Crystallography
Muhammad Adil Mahmood, Rajwali Khan, Sattam Al Otaibi, Khaled Althubeiti, Sherzod Shukhratovich Abdullaev, Nasir Rahman, Mohammad Sohail, Shahid Iqbal
Summary: The impact of Co and Gd on the structural, magnetic, and dielectric properties of ZnO nanotubes synthesized by co-precipitation is studied. The results show that incorporating Co and Gd into ZnO decreases crystallinity while maintaining optimum orientation. Co and Gd doping does not affect the morphology of the nanotubes. Decreasing the frequency and concentration of Gd co-dopant leads to an increase in dielectric constant and loss values. The presence of doping results in an inversely proportional relationship between dielectric constant and ac electrical conductivity response. Co and Gd co-doped ZnO nanotubes exhibit ferromagnetic properties at 300K, with an increase in ferromagnetic response as Gd doping increases to 3% and a decrease with further Gd co-doping. Electrical conductivity of the same sample is superior to pure and low Gd doped ZnO, suggesting potential applications in spin-based electronics.
Article
Engineering, Electrical & Electronic
Mudasser Husain, Nasir Rahman, Nourreddine Sfina, Nora Hamad Al-Shaalan, Sarah Alharthi, Saif A. Alharthy, Mohammed A. Amin, Vineet Tirth, Rajwali Khan, Mohammad Sohail, Ahmed Azzouz-Rached, Shaukat Ali Khattak, Muhammad Yaqoob Khan
Summary: In the search for energy generation and storage materials, metal halide perovskites have emerged as a promising option. With their exceptional optical and electronic properties, they show great potential for various optoelectronic applications. The research findings suggest that these materials could be utilized in energy generation and storage devices.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Physics, Multidisciplinary
Mudasser Husain, Hind Albalawi, Maryam Al Huwayz, Noor alhuda Al Saqri, Rajwali Khan, Nasir Rahman
Summary: In this research, ternary non-centrosymmetric chloroperovskite compounds (ABCl3, where A = Rb, B = Be, Mg) were extensively investigated using DFT incorporated in WIEN2K code. The findings reveal that these compounds possess a cubic, non-centrosymmetric, and stable crystalline structure. The mechanical properties indicate the ductility and mechanical stability of RbBeCl3 and RbMgCl3. Electronic properties, including band structures and density of states, were examined, and RbBeCl3 was found to exhibit semiconducting behavior while RbMgCl3 was identified as an insulator. The study also explored the optical properties of these compounds, revealing potential applications in modern photovoltaic technologies within the ultraviolet range.
Article
Chemistry, Multidisciplinary
Kashif Safeen, Rehan Ullah, Akif Safeen, Muhammad Kabeer, Rajwali Khan, Hayat Ullah, Abid Zaman, Khawaja Shafique Ahmad, Muhammad Zia Ullah Shah, Hosam O. Elansary, Ihab Mohamed Moussa, Ryan Casini, Eman A. Mahmoud
Summary: This research investigates the effect of calcination temperatures on the structural phases and properties of cobalt-doped TiO2 nanoparticles. The results show that the calcination temperature affects the structural phase and properties of the nanoparticles, and cobalt doping and crystalline phase are important parameters for optimizing the photocatalytic activity of TiO2.
JOURNAL OF SAUDI CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Mudasser Husain, Hind Albalawi, Maryam Al Huwayz, Rajwali Khan, Nasir Rahman
Summary: Using DFT method, this study investigates the properties of LaXSi (X = Pt, Pd) half-Heusler compounds. The stability of the compounds is ensured by employing the Birch-Murnaghan equation of state and negative formation energy. The elastic constants evaluation is crucial in determining the mechanical stability, while the analysis of electronic and optical properties suggests potential applications in high-frequency UV devices. The thermoelectric properties also indicate the materials' suitability as exceptional thermoelectric materials.
Article
Chemistry, Multidisciplinary
Nasir Rahman, Mudasser Husain, Vineeth Tirth, Ali Algahtani, Hassan Alqahtani, Tawfiq Al-Mughanam, Abdulaziz H. Alghtani, Rajwali Khan, Mohammad Sohail, Abid Ali Khan, Ahmed Azzouz-Rached, Aurangzeb Khan
Summary: By using first-principles techniques based on density functional theory, this study investigates the lithium-based halide perovskites LiRCl3 (where R = Be and Mg) using the WIEN2K code. The research confirms the structural stability and transparency of LiMgCl3 and LiBeCl3, suggesting their potential use in optoelectronic devices.
Article
Chemistry, Multidisciplinary
Nasir Rahman, Abdur Rauf, Mudasser Husain, Nourreddine Sfina, Vineet Tirth, Mohammad Sohail, Rajwali Khan, Ahmed Azzouz-Rached, Ghulam Murtaza, Abid Ali Khan, Shaukat Ali Khattak, Aurangzeb Khan
Summary: In this study, the optoelectronic, structural, thermoelectric, and elastic characteristics of M2LiCeF6 (M = Rb and Cs) double perovskite compounds were investigated using ab initio modeling. The compounds were found to be structurally stable and possess mechanical stability, anisotropy, and toughness. They also showed narrow band gaps and exhibited transparency in the low incident photon energy range, making them suitable for high-frequency UV devices. Furthermore, the materials exhibited high electrical conductivity, power factors, and figures of merit (ZT), making them effective thermoelectric resources.
Review
Chemistry, Multidisciplinary
Basmah H. Alshammari, Maha M. A. Lashin, Muhammad Adil Mahmood, Fahad S. Al-Mubaddel, Nasir Ilyas, Nasir Rahman, Mohammad Sohail, Aurangzeb Khan, Sherzod Shukhratovich Abdullaev, Rajwali Khan
Summary: Nanomaterials and nanoparticles are rapidly growing fields in research and technology, with a wide range of applications. Nanoparticles are categorized based on their size, shape, and structure, and have been widely used in engineering and semiconductor device production. ZnO is a stable semiconductor material that is used in various products, from batteries to biomedical sensors. Different growth methods have been developed to synthesize ZnO nanostructures at low temperatures. This review focuses on recent advancements in fabricating semiconductor devices using nanostructured materials and discusses the challenges and prospects in this research field.
Review
Biochemistry & Molecular Biology
Guo Hongfang, Rajwali Khan, Ahmed A. El-Mansi
Summary: This study explores the role of miR-181a in adipogenesis through literature review and bioinformatics analysis. It provides insights into the regulatory functions of miR-181a in fat tissues and its association with adipogenesis, lipid metabolism, obesity, and obesity-related syndromes.
MOLECULAR BIOTECHNOLOGY
(2023)