Article
Materials Science, Ceramics
Sh M. Khaliullin, A. A. Koshkina
Summary: Iron oxide nanopowders were synthesized via a Solution Combustion Synthesis (SCS) method using sol-gel compositions with iron nitrates and soluble organic reducing agents. The combustion regime was found to affect phase formation, morphology, color, and dielectric properties of the powders, with preferred morphology and high dielectric properties achievable using urea as a fuel.
CERAMICS INTERNATIONAL
(2021)
Article
Physics, Applied
Guangxiu Liu, Long Zhou, Bowen Zhou, Xubin Ye, Dabiao Lu, Xudong Shen, Shijun Qin, Zhiwei Hu, Yi-Ying Chin, Hong-Ji Lin, Chien-Te Chen, Xiaohui Yu, Youwen Long
Summary: The A-site ordered but B-site disordered quadruple perovskite oxide PbMn3Cr3MnO12 was synthesized using high-pressure and high-temperature methods. The compound shows three antiferromagnetic phase transitions at approximately 155K, 81K, and 74K, respectively, due to complex spin interactions. Introducing Mn4+ ions into the B site increases the A-site spin-related ordering temperature significantly.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Yicong Ye, Ziqi Ni, Kaijia Hu, Yahao Li, Yongqian Peng, Xingyu Chen
Summary: With the advancement of communication technology, the need for microwave dielectric ceramics has become increasingly urgent. Perovskite ceramics, with a wide range of dielectric constant, hold great potential for various applications. However, existing methods for predicting dielectric constant have limitations in universality and predictability, hindering the rational design of microwave dielectric ceramics. This research aims to develop a simple method using machine learning to accurately predict the dielectric constant of perovskite ceramics based on their elemental composition. The predicted results from our model align with experimental data, but differ significantly from those calculated using the C-M equation.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Physics, Applied
Shreyas J. Kashyap, Ravi Sankannavar, G. M. Madhu
Summary: In this paper, the synthesis and physicochemical properties of various composite oxide samples were studied. The samples showed the presence of multiple phases, uneven shape, and aggregation. In addition, specific vibrations and optical properties were observed.
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM
(2022)
Article
Nanoscience & Nanotechnology
Aditi Sahoo, Tufan Paul, Soumen Maiti, Rupak Banerjee
Summary: 2D CsPb2Br5 synthesized through chemical precipitation method exhibits high dielectric constant and low dielectric loss, showing great potential in energy harvesting and storage devices.
Article
Chemistry, Multidisciplinary
Ben-Hao Kang, Shuang-Feng Li, Jinlong Yang, Zhong-Ming Li, Yan-Fei Huang
Summary: In this study, an asymmetrical PVDF-PZT composite solid-state electrolyte (CPE) was prepared to address the limitations of conventional polymer/ceramic CPEs in inhibiting lithium dendrite growth and meeting the contradictory requirements of anodes and cathodes. The incorporation of high dielectric PZT nanoparticles in the CPE formed a dense thin layer on the anode side, attracting lithium ions for homogeneous plating and suppressing dendrite growth. The PVDF-enriched region on the cathode side ensured intermediate contact with positive active materials, leading to superior cycling performance and low interfacial impedances.
Article
Optics
Meng Xu, Xinyue Wang, Jiexin Weng, Jingling Shen, Yanbing Hou, Bo Zhang
Summary: This paper studies a UV-NIR broadband optical detector based on MAPbBr3 single crystal, which shows good response in the near-infrared region. The optical response of the device is mainly attributed to the photoelectric effect in the visible light band, while it is mainly caused by the thermal effect in the near-infrared band.
Article
Optics
Fuyang Tay, Swati Chaudhary, Jiaming He, Nicolas Marquez Peraca, Andrey Baydin, Gregory A. Fiete, Jianshi Zhou, Junichiro Kono
Summary: Investigated the THz response of La0.875Sr0.125MnO3 single crystal and observed significant magnetic field-induced changes in THz resistance and capacitance. Discussed the possible mechanisms for the coexistence of colossal THz magnetoresistance and magnetocapacitance. This study enhances our understanding of colossal magnetoresistance in THz technology.
Article
Materials Science, Ceramics
C. Murugesan, K. Ugendar, L. Okrasa, Jun Shen, G. Chandrasekaran
Summary: In this study, nanocrystalline Mn-Zn ferrites were synthesized through a solvent-free combustion reaction method and characterized using various techniques. The results showed that Zn substitution affects the crystallite size and electrical properties of the samples, but does not significantly alter the ionic states. The Zn-substituted manganese ferrite nanoparticles hold promise for high-frequency electronic device applications.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Sandhya Suresh, P. S. Vindhya, S. Devika, V. T. Kavitha
Summary: Nanocrystalline perovskites, La1-xSrxMnO3 (x = 0, 0.3, 0.5, 0.7), were synthesized via the combustion method using citric acid as fuel. XRD and SEM analysis confirmed the formation of desired compositions with smaller crystallite size as Sr doping concentration increased. Optical analysis showed increased absorbance and optical bandgap energy with Sr doping concentration. Dielectric and conductivity analysis revealed the influence of Sr doping concentration on refractive index, dielectric constant, and ac conductivity.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Ceramics
Weibai Bian, Jiqiang Jia, Ruixuan Zhang
Summary: Pt/SrTiO3(STO)/LaNiO3(LNO) and Pt/STO/Pt structures were fabricated on Si substrates using sol-gel method. Dielectric tunability characteristics of these two structures are investigated over temperature range of 300-80 K. STO prepared on LNO exhibits better crystallinity and dielectric tunability than that prepared on Pt. Furthermore, LNO/STO/LNO structure exhibits similar tunability, lower tan delta, higher figure-of-merit (FOM) values, and better tunability symmetry compared with Pt/STO/LNO structure, demonstrating the better performance of LNO electrode than conventional inert metal electrodes.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Khouloud Moualhi, Wael Chouk, Youssef Moualhi, Abdelhak Othmani, Mouldi Zouaoui
Summary: In this study, the GdCa2Cu3O delta (GdCCO) compound was synthesized using the solid-state reaction method, and its crystal structure and dielectric properties were investigated. The results showed that the prepared ceramic material exhibited excellent dielectric performance and temperature stability, making it a potential candidate for high-temperature capacitors.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Article
Engineering, Environmental
Bing Xie, Tongtong Wang, Jinxia Cai, Qiuyu Zheng, Zhiyong Liu, Kun Guo, Pu Mao, Haibo Zhang, Shenglin Jiang
Summary: Polymer-based nanocomposites with high εr ceramic fillers embedded in a high-Eb polymer matrix are extensively studied for their potential as flexible dielectrics in high-Ue film capacitors. By designing core-shell structured PZT@SiO2 nanofillers, the paradox between εr and Eb is effectively resolved, resulting in improved Ue and high discharging efficiency.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
M. Sahu, S. Hajra, J. Bijelic, D. Oh, I. Djerdj, H. J. Kim
Summary: A modified aqueous sol-gel reaction was used to synthesize Sr3Co2WO9 compound, which exhibits polycrystalline microstructure. Triboelectrification is a promising energy scavenging method, and triple perovskite shows excellent properties for TENG applications.
MATERIALS TODAY ENERGY
(2021)
Article
Chemistry, Physical
Shohaib Abass, Anita Bagri, Khalid Sultan
Summary: The properties of Nd2NiMnO6 have been modified by doping divalent Sr and introducing oxygen vacancies. The structural disorder and mixed valence of Ni and Mn have been confirmed through various spectroscopy techniques. Dielectric and electrical studies show the dependence of these properties on frequency and temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Marzieh Nadafan, Mohammad Reza Tohidifar, Maryam Karimi, Rasoul Malekfar, Gholamhossein Khorrami
CERAMICS INTERNATIONAL
(2018)
Review
Materials Science, Ceramics
Boshra Ghanbari Shohany, Ali Khorsand Zak
CERAMICS INTERNATIONAL
(2020)
Article
Materials Science, Ceramics
R. Mastan, A. Khorsand Zak, R. Pilevar Shahri
CERAMICS INTERNATIONAL
(2020)
Article
Materials Science, Multidisciplinary
A. Khorsand Zak, H. Shirmand, S. Mohammadi, S. M. Banihashemian
MATERIALS RESEARCH EXPRESS
(2020)
Article
Chemistry, Analytical
M. Roeinfard, M. Zahedifar, M. Darroudi, A. Khorsand Zak, E. Sadeghi
Article
Biochemical Research Methods
M. Roeinfard, M. Zahedifar, M. Darroudi, A. Khorsand Zak, E. Sadeghi
Summary: GQDs decorated with Eu, Ag, and Se at different ratios were synthesized at varying temperatures, with surface passivation using PEG to enhance photoluminescence intensity. GQDs synthesized at 180 degrees C and decorated with Se (0.3%) exhibited the highest PL intensity and long-lasting afterglow, making them a promising candidate for photodynamic therapy applications.
JOURNAL OF FLUORESCENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
M. Roeinfard, M. Zahedifar, M. Darroudi, K. Sadri, A. Khorsand Zak
Summary: The novel radiotracer featuring Graphene quantum dots (GQDs) decorated with selenium (Se) and modified with Polyethylene glycol (PEG), successfully labeled with (99m)Technetium (Tc-99m). In vivo experiments demonstrated the high stability and radioactivity of Tc-99m-GQDs, with prominent distribution in the kidneys, suggesting potential for kidney labeling and rapid clearance from the body within 24 hours.
JOURNAL OF CLUSTER SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Sh Tabatabai Yazdi, M. Mousavi, Gh H. Khorrami
Summary: V2-xCoxO5 nanoparticles with Co concentrations up to x = 0.2 were synthesized via a sol-gel route in gelatin medium. The synthesized particles mainly consist of crystalline alpha-V2O5 phase, with the particle size increasing from about 34 to 49 nm as the Co content rises. These nanoparticles are found to be direct band gap semiconductors with band gap energies controlled by surface and interface effects rather than chemical composition, and the ferromagnetic nature is influenced by Co substitution.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Gh. H. Khorrami, M. Nadafan, Z. Dehghani, A. Izadi-Darbandi, Gomaa A. M. Ali
Summary: In this study, the effect of MnO doping on the optical properties of MgO was investigated, and it was found that increasing MnO content alters the crystal structure and morphology, decreases the band gap, and enhances nonlinear optical response. This material shows promising potential for photonics and optical devices.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Ali Khorsand Zak, Abdul Manaf Hashim
Summary: The present study developed a wet chemical method to decorate GO nanosheets with Au nanoparticles (AuNPs/rGO). Optical characterizations, including UV-vis, FTIR, and XPS, were used to analyze the samples. XRD, TEM, and FESEM techniques were applied to investigate the structural and morphological characteristics. The toxicity of GO nanosheets increased after decoration with Au nanoparticles, as evidenced by the inhibited growth of Neuro2A cells.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Ali Khorsand Zak, Abdul Manaf Hashim, Abd Manaf Hashim
Summary: Nano- and micro- Ba1-xCaxTiO3 powders were synthesized using sol-gel and solid-solution-reaction methods to investigate the effects of synthesis methods and Ca concentrations on the structural and dielectric properties of BCT samples. XRD analysis revealed a tetragonal phase for the samples. Higher Ca concentrations resulted in increased uniform and non-uniform strains, with significantly greater non-uniform strain observed in BCT-nano samples compared to BCT micro samples. Particle and grain morphologies were studied using field emission scanning electron microscopy and transmission electron microscopy. The relative permittivity variation of prepared pellets was measured and analyzed, showing a change from ferroelectric to relaxor behavior for BCT5.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
M. Nadafan, Gh. h. Khorrami, M. Arab, Z. Dehghani, A. Kompany
Summary: Zn(1-x)CrxAl2O4 (x = 0.00, 0.05, 0.10, 0.20) nanoparticles were synthesized using gelatin as a polymerization agent. The structure and morphology were analyzed by X-ray diffraction and scanning electron microscopy. The results showed that the samples were polycrystalline and crystallized in a cubical spinel phase. Increasing the percentage of Cr led to a decrease in crystallite size and energy bandgap. The Z-scan approach was used to study the nonlinear absorption coefficient and refractive index of the samples.
Article
Materials Science, Multidisciplinary
Ali Khorsand Zak, Abdul Manaf Hashim, Javad Esmaeilzadeh
Summary: Gelation-based sol-gel method was used to synthesize (ZnO)1-x/(SnO2)x nanocomposites. X-ray diffraction analysis (XRD) were used to investigate the structural characteristic. Ultraviolet-Visible (UV-vis) and X-ray photoelectron spectroscopies (XPS) were carried out for the optical characterizations. SnO2 nanocrystals growth beside the ZnO nanocrystals resulted in (ZnO)1-x/ (SnO2)x nanocomposites. The transparency of the samples increased.
Article
Materials Science, Multidisciplinary
A. Jalaukan, S. M. Aldowaib, A. S. Hamed, B. Ghanbari Shohany, R. Etefagh, A. Khorsand Zak
IRANIAN JOURNAL OF MATERIALS SCIENCE AND ENGINEERING
(2019)
Article
Chemistry, Multidisciplinary
F. Kordi, Ali Khorsand Zak, Majid Darroudi, M. Hazrati Saedabadi
Article
Nanoscience & Nanotechnology
Spyridon G. Kosionis, Emmanuel Paspalakis
Summary: In this study, we theoretically investigate the pump-probe response and the four-wave mixing spectrum in a hybrid system composed of a semiconductor quantum dot and a spherical metal nanoparticle. Using a density matrix methodology, we calculate the absorption/gain, dispersion, and four-wave mixing spectra, and analyze their spectral characteristics. We also apply the metastate theory and the dressed-state picture to predict the positions of the spectral resonances.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
L. S. Lima
Summary: This study investigates quantum correlation and entanglement in the non-Hermitian Hubbard model. By analyzing quantum entanglement measures such as entanglement negativity and entropy, the effect of non-Hermitian imaginary hopping on the system is explored. It is found that in the large... limit, the non-Hermiticity reverses the behavior of the ground state energy and low-lying excitations.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Nam-Chol Ri, Chung-Sim Kim, Sang-Ryol Ri, Su-Il Ri
Summary: By decreasing the lattice thermal conductivity of GNR through chemical derivation and strain, enhancing the thermoelectric properties of the electron part can be an important method to approach PGEC. This paper proposes synthesized hybrid systems formed by chemical derivation in the middle parts of b-AGNRs, and investigates the band structures and thermoelectric properties of the electron part under different strains. The results show that the band gaps of the systems significantly increase under different strains.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Le T. T. Phuong, Tran Cong Phong
Summary: This study investigates the effects of gas molecules adsorbed on /312-borophene on its electronic heat capacity and thermal Schottky anomaly. The results show that the adsorbed gas molecules have different impacts on the electronic heat capacity, leading to the generation of various new energy levels.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Tianyan Jiang, Jie Fang, Wentao Zhang, Maoqiang Bi, Xi Chen, Junsheng Chen
Summary: This paper investigates the adsorption and sensing properties of transition metal-doped WSSe gas-sensitive devices towards H2, CO, and CO2 gases related to thermal runaway in Li-ion batteries using density functional theory. The results show that Ti, Mn, and Mo dopants preferentially bind to the S-surface of the WSSe monolayer, and all three monolayers exhibit significantly improved sensing characteristics, with chemisorption towards CO. Band structure analysis suggests that the Ti-WSSe monolayer has the potential to be used as a resistive CO detection sensor. Recovery time calculations indicate the reuse capabilities of the gas-sensitive devices. Mn-WSSe monolayer shows potential for H2 detection, while Mo-WSSe monolayer is more suitable for CO2 detection. This work lays the foundation for potential gas-sensitive applications of WSSe monolayer in thermal runaway scenarios, advancing research in gas sensing domains.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Olga A. Alekseeva, Aleksandr A. Naberezhnov, Ekaterina Yu. Koroleva, Aleksandr Fokin
Summary: This study investigates the temperature dependence of crystal structure and dielectric response in a nanocomposite material containing porous glasses and embedded sodium nitrate. The results reveal a crossover point in the temperature dependence of the order parameter of the structural transition in sodium nitrate nanoparticles, as well as a decrease in activation energy of sodium ions hopping conductivity during heating.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Lijun Cheng, Fang Cheng
Summary: This paper investigates the effects of electric and magnetic fields on the Goos-Hanchen (GH) shift in a semi-Dirac system. The results show that the magnitude and direction of the GH shift depend on various factors such as incidence angle, electric barrier height and width, and magnetic field. It is observed that there is a saltus step in GH shifts at the critical magnetic field, which decreases with increased potential barrier thickness. Additionally, the GH shift can be significantly enhanced by applying an electric field in the III region. These findings are important for the development of semi-Dirac based electronic devices.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Alexander K. Fedotov, Uladzislaw E. Gumiennik, Julia A. Fedotova, Janusz Przewoznik, Czeslaw Kapusta
Summary: The study conducted an improved analysis of carrier transport in single-layer graphene and hybrid structures, showing the coexistence of negative and positive contributions in magnetoresistive effect. Various models were used to analyze the dependences on temperature and magnetic field, providing insights into the behavior of electrical resistance in the structures.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Xuhui Peng, Tao Chen, Ruotong Chen, Shizheng Chen, Qing Zhao, Xiaoping Huang
Summary: In this study, a novel method was proposed to design and fabricate optoelectronic devices with highly precise controlled photorefractive liquid crystal structures. By utilizing quantum dots and electric tuning, a regular periodic grating was formed in a quantum dot-doped liquid crystal volume illuminated by a laser standing evanescent wave field. The obtained optical diffraction pattern showed equally spaced light spots and high diffraction efficiency, indicating a significant change in the refractive index of the nanostructured device.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Kai-Hua Yang, Xiao-Hui Liang, Huai-Yu Wang, Yi-Fan Wu, Qian-Qian Yang
Summary: In this work, a theoretical model is proposed to achieve the controllability of quantum interference and decoherence. The effects of intralead Coulomb interaction, interdot tunneling, and electron-phonon interactions on differential conductance are investigated. The results show the appearance of destructive interference, Fano interference, and negative differential conductance in strong dot-lead tunneling regions, while a characteristic pattern of positive and negative differential conductances appears in the weak dot-lead tunneling regime.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Xueying Wang, Qian Ma, Qi Zhang, Yi Wang, Lingyu Li, Dongheng Zhao, Zhiqiang Liu
Summary: Porous double-channel alpha-Fe2O3/SnO2 heterostructures with tunable surface/interface transport mechanism were successfully fabricated by electrospinning and calcination. These heterostructures exhibited a large specific surface area, providing more active sites and enhanced adsorption capacity. The optimal composite materials showed the highest response value and the fastest response/recovery times to DMF, along with good cycling performance, long-term stability, and high gas selectivity.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Donglin Guo, Zhengmeng Xu, Chunhong Li, Kejian Li, Bin Shao, Xianfu Luo, Jianchun Sun, Yilong Ma
Summary: Using full electron-phonon interactions and the Boltzmann transport equation, this study investigates the phonon scattering channel and electrical properties of graphene under anharmonic phonon renormalization (APRN). The results show that the APRN reduces the phonon frequency and three-phonon phase space with increasing temperature, affecting the acoustic branch more than the optical branch. The thermal conductivity of graphene decreases after considering three- and four-phonon scattering, and the primary scattering channels are identified. Furthermore, the APRN increases the strength of electron-phonon coupling and leads to an increase in n-type electric resistance at room temperature.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Hongping Zhao, Man Zhao, Dayong Jiang
Summary: The study proposes a broadband photodetector with high response, high sensitivity, and controllable band by integrating quantum dots and highly conductive materials. The PD composed of ZnO film/PbS quantum dots heterostructure shows excellent photoresponse performance in the UV-Vis-NIR range, with the peak responsivity increased by 550%, accompanied by significant red shift, faster response, and recovery speed. By using RF magnetron sputtering to prepare ultra-thin ZnO film, the impact of PbS quantum dots on the photoelectric properties of ZnO film is comprehensively and systematically discussed.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Ye Xuan Meng, Liwei Jiang, Yisong Zheng
Summary: Manipulating magnetism by electrical means is an effective method for realizing ultra-low power spintronic-integrated circuits. In this study, it is demonstrated that the two-dimensional semiconductor material InO monolayer can be tuned to a half-metallic state by applying a gate voltage, providing theoretical guidance for adjusting two-dimensional magnetic semiconductors.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
Article
Nanoscience & Nanotechnology
Anusha Kachu, Aalu Boda
Summary: In this research, we investigated the impact of confinement nature on a neutral hydrogenic donor impurity in a quantum dot. The study demonstrated intriguing behavior in response to changes in potential shape, quantum dot parameters, and spin-orbit coupling strengths. The findings provide valuable insights into the fundamental physics of quantum dots and impurities and can aid in the design and optimization of QD-based technologies.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2024)
