Article
Materials Science, Multidisciplinary
Li-Yan Hu, Li-Fang Yu, Huan Yang, Xian Xu, Fang Wang, Xiao-Hong Xu
Summary: Two-dimensional VSe2 and V1-xFexSe2 nanosheets were synthesized using a high-temperature organic solution method, with tunable thickness and room-temperature ferromagnetism. The enhancement of magnetization in V0.8Fe0.2Se2 nanosheets is attributed to the coupling interaction of 3d orbits between V and Fe atoms, showing 5 times higher coercivity and magnetization compared to pure VSe2 nanosheets.
Article
Chemistry, Multidisciplinary
Rajwali Khan, Ihab Shigidi, Sattam Al Otaibi, Khaled Althubeiti, Sherzod Shukhratovich Abdullaev, Nasir Rahman, Mohammad Sohail, Alamzeb Khan, Shahid Iqbal, Tommaso Del Rosso, Quaid Zaman, Aurangzeb Khan
Summary: In this study, the co-precipitation approach was used to synthesize ZnO, Zn0.96Gd0.04O, and Zn0.96-xGd0.04CoxO nanotubes. The effects of gadolinium and cobalt doping on the microstructure, morphology, and optical characteristics of ZnO were investigated. It was found that gadolinium and cobalt doping did not affect the morphology of the nanotubes, but reduced the crystallinity of the samples. The doping also resulted in changes in the optical characteristics and electrical conductivity of the nanotubes.
Article
Engineering, Electrical & Electronic
T. A. Taha, Emad M. Ahmed, Asmaa I. El-Tantawy, A. A. Azab
Summary: In this study, single-phase Fe/ZnO nanostructures were synthesized using a direct sol-gel method to investigate the compatibility of zinc oxide for spintronic applications. The samples were characterized using various techniques including X-ray diffraction, transmission electron microscopy, X-ray photoelectron spectroscopy, UV-Vis spectroscopy, and vibrating sample magnetometer. The results showed that Fe-doped ZnO exhibited weak ferromagnetism at room temperature, with an expansion in lattice unit volume and a decrease in energy gap. Dielectric measurements also indicated a decrease in dielectric constant and AC conductivity with increasing Fe content.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Multidisciplinary
Qinglin Jiang, Jiang Zhang, Zhongquan Mao, Yao Yao, Duokai Zhao, Yanhua Jia, Dehua Hu, Yuguang Ma
Summary: This study successfully demonstrates room-temperature ferromagnetism in organic semiconductors with high Curie temperatures through the fabrication of PDI powders containing radical anion aggregates. The findings offer a new optional approach to create room-temperature magnetic semiconductors.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
S. Kaya, O. Ozturk, L. Arda, F. Bulut
Summary: Iron (Fe) doping can enhance the crystal structure, optical behavior, and magnetism of ZnO nanorods. The intensity of near band edge emissions and magnetic properties increase with Fe concentration. There is a clear correlation between the concentration of crystal defects and ferromagnetic parameters.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Xingguo Wang, Ce Bian, Yixiang He, Jie Guo, Peng Zhang, Lixuan Liu, Yi Wei, Lingjia Meng, Huaning Jiang, Bixuan Li, Anmin Nie, Lihong Bao, Yongji Gong
Summary: A phase-selective synthesis of ultrathin FeTex crystals was achieved using a facile CVD approach, providing opportunities for constructing complex devices such as ferromagnet/antiferromagnet, magnet/superconductor heterostructures.
Article
Physics, Applied
Anup Debnath, Tuhina Mondal, Gouranga Mahapatra, Arijit Kapuria, Shyamal K. Saha
Summary: This article reports an easy and cost-effective chemical synthesis method for producing free-standing 2D Cr2S3 nanosheets and nanoparticles, and investigates their magnetic properties. The 2D Cr2S3 nanosheets exhibit ferrimagnetic ordering with high coercivity, while the nanoparticles show negligible coercivity. This synthesis technique can be applied to achieve other non-van der Waals type 2D magnetic materials.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Chemistry, Physical
You Li, Xing Cheng, Yibin Zhao, Mingyan Liu, Fang Li, Chengxi Huang, Lun Dai, Yi Wan, Erjun Kan
Summary: A one-step chemical vapor deposition method was proposed to prepare Mn-substituted MoS2 monolayers, which exhibit robust magnetism. The microscopic origin of magnetism in Mn-MoS2 was revealed through first-principles calculations, demonstrating potential applications in spintronic devices and next-generation memory components.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Physics, Condensed Matter
S. Kaya, O. Ozturk, L. Arda
Summary: The hydrothermal method was used to grow zinc oxide nanorods doped with different Europium concentrations on a glass substrate. The effects of Eu doping on the structural, optical, and magnetic properties were systematically investigated. The results showed that Eu doping induced soft room temperature ferromagnetism in the samples, while the undoped sample exhibited diamagnetic behavior.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Chemistry, Physical
Liang Cai, Vincent Tung, Andrew Wee
Summary: Room-temperature ferromagnetic atomically thin transition metal chalcogenides (TMCs) provide a novel platform for discovering new physical phenomena in the 2D limit and developing next-generation spintronic applications. However, the research on room-temperature ferromagnetism in TMC semiconductors and metals faces challenges, including the inconsistency between density functional theory (DFT) calculations and experimental results.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Shubhankar Mishra, Amritendu Roy, Aditi Sahoo, Biswarup Satpati, Anirban Roychowdhury, P. K. Mohanty, Chandan Kumar Ghosh, Dipten Bhattacharya
Summary: Observation of surface-defect-induced room-temperature multiferroicity-surface ferromagnetism, ferroelectricity, and significantly large magnetoelectric coupling is reported in nanorods of double perovskite Y2NiMnO6 compound. The surface oxygen vacancies in the nanorods cause long-range magnetic order and ferroelectricity through exchange coupling and spin-orbit coupling. The sharp drop in ferroelectricity under a magnetic field indicates strong cross coupling between magnetism and ferroelectricity.
Article
Multidisciplinary Sciences
Wei Hu, Chao Wang, Hao Tan, Hengli Duan, Guinan Li, Na Li, Qianqian Ji, Ying Lu, Yao Wang, Zhihu Sun, Fengchun Hu, Wensheng Yan
Summary: Embedding Cobalt atoms in graphene lattice can achieve robust room-temperature ferromagnetism, facilitated by the formation of square-planar Co-N-4 moieties and local magnetic moments provided by atomically dispersed Co atoms.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
S. Kaya, O. Ozturk, L. Arda
Summary: Zn1-xNdxO (x = 0.00, 0.01, 0.03, 0.05, 0.07) nanorods (NRs) are grown vertically using a hydrothermal method with Nd3+ ions successfully substituted into the crystal lattice of ZnO. Significant changes are observed in the morphological and optical properties of the Nd substituted ZnO NRs. The magnetic parameters are found to be independent of Nd concentration, while a correlation is found between the morphological properties and the H-c value of Nd substituted ZnO NRs.
CURRENT APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Huimin Zhang, Qinxi Liu, Liangzi Deng, Yanjun Ma, Samira Daneshmandi, Cheng Cen, Chenyu Zhang, Paul M. Voyles, Xue Jiang, Jijun Zhao, Ching-Wu Chu, Zheng Gai, Lian Li
Summary: We report the epitaxial growth of 2D non-van der Waals ferromagnetic bilayer FeSb on SrTiO3(001) substrates stabilized by strong coupling to the substrate, which exhibits in-plane magnetic anisotropy and a Curie temperature above 390 K. Our results open a new avenue for further exploring emergent quantum phenomena from the interplay of ferromagnetism and topology for application in spintronics.
Article
Multidisciplinary Sciences
Yi Zhou, Qing He, Fei Zhou, Xingqi Liao, Yong Liu, Zhonghong Lai, Mingqing Liao, Tianyi Han, Yudong Huang, Jingchuan Zhu
Summary: A dilute magnetic semiconductor based on perovskite niobates has been reported, showing stable local ferromagnetism at room temperature with the addition of Co doping. The material exhibits strong saturation magnetization, remnant magnetization, and small coercive field, indicating potential for practical applications.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Article
Energy & Fuels
Sunil Kumar, Hyun Min Park, Tej Singh, Manjeet Kumar, Yongho Seo
Summary: In this study, the stability of Ti3C2Tx MXene was investigated under different conditions, including in liquid form, dried form, and as conducting electrodes in a smart window application. The results showed that MXene exhibited good stability in all these situations.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Materials Science, Characterization & Testing
Tej Singh, Vedant Singh, Lalit Ranakoti, Sunil Kumar
Summary: This research aims to study the effect of weighting methods in multi-attribute decision-making and develop a framework for selecting the best natural fiber-reinforced friction composite for automobile braking. Sixteen friction composites with varying weight amounts of different fibers were evaluated, and their tribological properties were considered for selecting optimal composition. The EDAS approach was used, with different weighting methods, to identify the best alternative, and the result showed that the composite with 5 wt% ramie fiber exhibited optimal tribological properties.
Article
Chemistry, Multidisciplinary
Preeti Aneja, Prabhat Negi, Shivali Aneja, Suyog Rajendra Garad, Sunil Kumar
Summary: The developments and optimization of pH-sensitive liposomes as drug delivery systems were studied and evaluated. The effects of various factors on the entrapment efficiency were revealed through experimental design and response surface modeling. Pre-clinical studies demonstrated that pH-sensitive liposomes of carboplatin hold promise as a targeted approach for tumor tissue.
MAIN GROUP CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Vishwa Bhatt, Sanjay Sahare, Manjeet Kumar, Shern-Long Lee, Sunil Kumar, Ju-Hyung Yun
Summary: The pyro-phototronic effect is demonstrated for the first time in n-Si/MoO3-x heterostructures, showing its significant role in UV photodetection. The vertically grown 2D-MoO3-x microstructures exhibit a centrosymmetric structure, which is normally associated with the absence of pyroelectric polarization. However, this study shows the presence of a synergetic effect in the centrosymmetric MoO3-x-based heterojunction.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Mayank Kumar Malik, Vipin Kumar, Jaspal Singh, Pankaj Bhatt, Raghav Dixit, Sunil Kumar
Summary: The phosphorylation of alkali extracted mandua starch was found to decrease its digestibility and increase its resistant starch content. The chemically modified starch showed improved thermal stability and internal structure. This modified starch has potential applications in the development of food and pharmaceutical formulations.
Article
Chemistry, Physical
Sunil Kumar, Monu Kumar Shukla, Iqra Ali, Faheem Abbas, Rachna Verma, Girish Chandra, Deepak Kumar
Summary: The study focused on repurposing FDA-approved triazole-based drugs for lung cancer treatment. Deferasirox and Posaconazole showed potential as anticancer agents based on in silico and in vitro studies, including docking-based virtual screening and NRU assay.
MOLECULAR SIMULATION
(2023)
Article
Mathematics, Applied
Sunil Kumar, Shashikant Kumar, Sumit
Summary: This article presents a numerical analysis of a class of singularly perturbed delay Volterra integro-differential equations with multiple boundary layers. The problem is discretized using an implicit difference scheme for the differential term and a composite numerical integration rule for the integral term. The analysis of the discrete scheme consists of two parts: an a priori error estimate for robust convergence on specific meshes, and a maximum norm a posteriori error estimate involving difference derivatives of the approximate solution. Numerical experiments confirm the theoretical findings.
NUMERICAL ALGORITHMS
(2023)
Article
Mathematics, Applied
Aishwarya Jaiswal, Shashikant Kumar, Sunil Kumar
Summary: In this work, a system of Volterra integro-differential equations with initial conditions is considered. The derivative term in the equations is multiplied by distinct small positive parameters, leading to overlapping layers. A numerical scheme is proposed that avoids the extra condition on the problem's data required by a previous scheme. A priori and a posteriori error bounds for the proposed scheme are derived, and shortcomings in the a posteriori error estimation of the previous scheme are rectified. Numerical results in the form of graphs and tables are presented to validate the proposed theory.
COMPUTATIONAL & APPLIED MATHEMATICS
(2023)
Article
Engineering, Mechanical
Pooja Kadian, Sunil Kumar, Monika Sangwan
Summary: The purpose of this study is to investigate disturbances in a rotating microelongated thermoelastic solid half-space with two temperature and temperature dependent properties. The problem was modeled using Lord-Shulman and Green-Lindsay theories. The impact of inclined mechanical load on the microelongated thermoelastic half-space was explored using the normal mode technique, and analytical expressions for the displacement components, stresses, temperature fields, and microelongation were obtained. Numerical solutions were carried out for an aluminum epoxy-like material to illustrate the analytical results. Theoretical and numerical results showed the significant dependence of physical fields on rotation, elongation parameter, temperature dependent properties, two temperature parameter, and inclination angle. The results were compared with previously published results for validation.
JOURNAL OF VIBRATION ENGINEERING & TECHNOLOGIES
(2023)
Review
Chemistry, Multidisciplinary
Jayalakshmi Jayan, Namitha Chandran, Amrutha Chandran Thekkantavida, Mohamed A. Abdelgawad, Mohammed M. Ghoneim, Mohamed E. Shaker, Prerna Uniyal, Feba Benny, Subin Mary Zachariah, Sunil Kumar, Hoon Kim, Bijo Mathew
Summary: The monoamine oxidase enzyme (MAO) inhibitors are potential therapeutic targets for neurodegenerative diseases, and piperine, a compound found in black pepper, has been identified as a potent MAO inhibitor.
Article
Chemistry, Physical
Van Huy Nguyen, Minwook Kim, Cao Thang Nguyen, Muhammad Suleman, Dinh Cong Nguyen, Naila Nasir, Malik Abdul Rehman, Hyun Min Park, Sohee Lee, Sung Youb Kim, Sunil Kumar, Yongho Seo
Summary: A novel fabrication method is developed to prevent device contamination from air impurities and obtain atomically clean interfaces using an Argon shielding gas environment. Large-area graphene encapsulated with hexagonal boron nitride is fabricated, and high graphene mobility up to 600,000 cm2V-1s-1 is achieved at room temperature.
APPLIED SURFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Sunil Kumar
Summary: This review focuses on environmentally friendly, fluorine-free techniques for MXene synthesis and explores mechanisms and recent breakthroughs in various etching strategies. Fluorine-free MXene synthesis improves surface chemistry and electronic properties, expanding their applications. In addition, this review delves into novel fluorine-free methods for tailoring MXene properties.
Article
Chemistry, Multidisciplinary
Manish Taunk, Sunil Kumar, Amit Aherwar, Yongho Seo
Summary: This study investigates the structural and optical properties of doped CuI nanocrystals synthesized using a facile chemical method. X-ray diffraction and X-ray photoelectron spectroscopy were employed to characterize the crystal structure, morphology, and dopant incorporation.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2024)
Review
Materials Science, Multidisciplinary
Sikandar Aftab, Muhammad Zahir Iqbal, Sajjad Hussain, Fahmid Kabir, Sunil Kumar, H. H. Hegazy, Burragoni Sravanthi Goud
Summary: Organic solar cells have advantages over inorganic solar cells, but also face challenges. MXenes, a type of 2D material, show great potential in energy storage and conversion. Their high conductivity makes them ideal for electronic devices, especially in photovoltaic technology.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Physical
Prayaga Rajappan Krishnendu, Sonu Benny, Sunil Kumar, Jayalakshmi Jayan, Vaishnav Bhaskar, Leena. K. Pappachen, T. P. Aneesh, Mohamed A. Abdelgawad, Mohammed M. Ghoneim, Orazio Nicolotti, Subin Mary Zachariah, Bijo Mathew
Summary: Anti-inflammatory medications are commonly used over-the-counter drugs due to their relation to inflammation and pain caused by various diseases. Extensive research is required to develop effective and safe anti-inflammatory therapies. A 3D-QSAR model was built using a pharmacophore hypothesis, and virtual screening was used to identify potential compounds for COX-2 inhibition.
JOURNAL OF MOLECULAR STRUCTURE
(2024)
