Permittivity
View article: New Electromagnetic Shielding Materials Based on Viscose/Maghemite/Goethite/Polysiloxane
New Electromagnetic Shielding Materials Based on Viscose/Maghemite/Goethite/Polysiloxane Open
In this study, we present a convenient approach for the preparation of viscose, maghemite, goethite, and poly(methylhydro-dimethyl)siloxane hybrid materials possessing electromagnetic shielding properties, thermal stability, strong magneti…
View article: Frequency-Dependent AC Conductivity and Dielectric Studies of PPy/WO₃ Nanocomposites for Frequency-Tunable Dielectric Devices
Frequency-Dependent AC Conductivity and Dielectric Studies of PPy/WO₃ Nanocomposites for Frequency-Tunable Dielectric Devices Open
In this study, polypyrrole/tungsten trioxide (PPy/WO₃) nanocomposites were synthesized by chemical oxidative polymerization and systematically analyzed for their frequency-dependent AC conductivity and dielectric properties. …
View article: Quantum tunneling and barrier hopping in MgTi2O5 nanoparticles: a study of AC/DC conductivity and dielectric response
Quantum tunneling and barrier hopping in MgTi2O5 nanoparticles: a study of AC/DC conductivity and dielectric response Open
The electrical conductivity and dielectric characteristics were investigated across a frequency range of 200–5 MHz and a temperature range of 318 K to 433K for MgTi 2 O 5 nanoparticles (NPs). The electrical conductivity data displayed two …
View article: Suplementary Note F_I v0.1
Suplementary Note F_I v0.1 Open
NOTE F_I – HU Leírás (HU)A Supplementary Note F_I a Spirálkozmológia elektromágneses alapmodelljét vezeti le a fonatszerkezetű térszövetből kiindulva. A dokumentum bemutatja, hogy az elektromos tér a fonat transzverzális deformációja, míg …
View article: Electrical and antimicrobial studies of multifunctional ZrO2 doped borate glasses and glass ceramics
Electrical and antimicrobial studies of multifunctional ZrO2 doped borate glasses and glass ceramics Open
In this study, borate-based glass and glass–ceramics doped with varying concentrations of ZrO 2 were synthesized, followed by controlled heat treatment for crystallization. X-ray diffraction, density, Fourier-transform infrared spectroscop…
View article: Texturing (Na0.5Bi0.5)TiO3-KNbO3-SrTiO3 Electrostrictive Ceramics by Templated Grain Growth Using (Na0.5Bi0.5)TiO3 Platelets
Texturing (Na0.5Bi0.5)TiO3-KNbO3-SrTiO3 Electrostrictive Ceramics by Templated Grain Growth Using (Na0.5Bi0.5)TiO3 Platelets Open
Electrostriction is an intriguing behaviour of dielectric materials, characterized by stable electrostrain with minimal hysteresis. (Na0.5Bi0.5)TiO3-based ceramics show promising electrostrictive behaviour, particularly the 0.90(Na0.5Bi0.5…
View article: Frequency-Dependent AC Conductivity and Dielectric Studies of PPy/WO₃ Nanocomposites for Frequency-Tunable Dielectric Devices
Frequency-Dependent AC Conductivity and Dielectric Studies of PPy/WO₃ Nanocomposites for Frequency-Tunable Dielectric Devices Open
In this study, polypyrrole/tungsten trioxide (PPy/WO₃) nanocomposites were synthesized by chemical oxidative polymerization and systematically analyzed for their frequency-dependent AC conductivity and dielectric properties. X-ray diffract…
View article: An Aerial-Ground Collaborative Framework for Asphalt Pavement Quality Inspection
An Aerial-Ground Collaborative Framework for Asphalt Pavement Quality Inspection Open
To overcome the limitations of conventional methods, this study developed a novel aerial-ground collaborative framework for multi-dimensional quality assessment of asphalt pavement. The quality inspection of asphalt pavement in the whole c…
View article: Suplementary Note F_I v0.1
Suplementary Note F_I v0.1 Open
NOTE F_I – HU Leírás (HU)A Supplementary Note F_I a Spirálkozmológia elektromágneses alapmodelljét vezeti le a fonatszerkezetű térszövetből kiindulva. A dokumentum bemutatja, hogy az elektromos tér a fonat…
View article: Unusual sign-changing Faraday effect in nanometer-thick magnetic films
Unusual sign-changing Faraday effect in nanometer-thick magnetic films Open
It is generally believed that the magneto-optical Faraday effect appears in the the bulk of a magnetic material and its sign is fully determined by the sign of the non-diagonal permittivity element. Here we reveal an additional contributio…
View article: Metasurface-based multifunctional composites with ultra-robust broadband microwave absorption up to 1000 °C
Metasurface-based multifunctional composites with ultra-robust broadband microwave absorption up to 1000 °C Open
The metamaterials offer methodology and infinite possibilities for ultra-broadband microwave absorption (MA). However, maintaining stable broadband MA under extreme high-temperature environments remains one of the most cutting-edge challen…
View article: Structure, optical, thermal, dielectric, hardness behaviors of l-histidine barium nitrate (LHBN): a metal-organic crystal for optoelectronic applications
Structure, optical, thermal, dielectric, hardness behaviors of l-histidine barium nitrate (LHBN): a metal-organic crystal for optoelectronic applications Open
In the search for advanced materials for photonics and optoelectronic device fabrications, l -histidine – based metal – organic crystals have shown a remarkable contribution due to their nonlinear optical properties. However, the comprehen…
View article: Tuning optical and dielectric properties of strontium-zinc ferrite nanomaterials through structure-cation engineering
Tuning optical and dielectric properties of strontium-zinc ferrite nanomaterials through structure-cation engineering Open
View article: Cr2O3/\b{eta}-Ga2O3 Heterojunction Diodes with Orientation-Dependent Breakdown Electric Field up to 12.9 MV/cm
Cr2O3/\b{eta}-Ga2O3 Heterojunction Diodes with Orientation-Dependent Breakdown Electric Field up to 12.9 MV/cm Open
We report the fabrication of Cr2O3/\b{eta}-Ga2O3 heterojunction diodes using reactive magnetron sputtering of Cr2O3 on highly doped \b{eta}-Ga2O3 bulk substrates along (100), (010), (001), (110), and (011) orientation dependence of high el…
View article: The enhanced dielectric response of (Ba, Sr)TiO3-Y2/3Cu3Ti4O12/TiO2 composite ceramics
The enhanced dielectric response of (Ba, Sr)TiO3-Y2/3Cu3Ti4O12/TiO2 composite ceramics Open
Ba 1-x Sr x TiO 3 -Y 2/3 Cu 3 Ti 4 O 12 /TiO 2 composite ceramics (x = 0, 0.1, 0.2, 0.3, 0.4) were successfully synthesized via solid-state reaction an…
View article: Influence of secondary phases and Ni doping on the dielectric properties of Cu1-xNixMoO4 ceramics sintered at ultra-low temperature
Influence of secondary phases and Ni doping on the dielectric properties of Cu1-xNixMoO4 ceramics sintered at ultra-low temperature Open
Ultralow-temperature sintered ceramics (ULTCCs) are attracting increasing attention due to their excellent dielectric properties, low processing temperatures, and unique microstructures that enable low dielectric loss in high-frequency app…
View article: Multiscale Methods for wave propagation in materials with sign-changing coefficients
Multiscale Methods for wave propagation in materials with sign-changing coefficients Open
From a mathematical perspective, the extraordinary properties of metamaterials are often reflected in the coefficients of the governing partial differential equations (PDEs). These coefficients may fall outside the assumptions of classical…
View article: Frequency–Temperature Characteristics of the Cellulose—Insulating Oil–Water Nanodroplet Nanocomposite Components for Diagnostic Evaluation of Power Transformer Insulation
Frequency–Temperature Characteristics of the Cellulose—Insulating Oil–Water Nanodroplet Nanocomposite Components for Diagnostic Evaluation of Power Transformer Insulation Open
We determined the reference characteristics of the loss tangent and the real component of the complex permittivity of the cellulose-insulating oil–water nanodroplet nanocomposite with a moisture content of 5.17% by weight in pressboard. Su…
View article: Microstructure-dependent dielectric breakdown in PVDF–BTO composites: A coupled electro-thermo-mechanical phase-field study
Microstructure-dependent dielectric breakdown in PVDF–BTO composites: A coupled electro-thermo-mechanical phase-field study Open
Ferroelectric composites are excellent candidates for multifunctional applications owing to the advantages of the synergy between the high polarization of ceramics and the high breakdown strength of polymers. A typical example of them is t…
View article: High-κ dielectric van der Waals integration on 2D semiconductors for three-dimensional complementary logic systems
High-κ dielectric van der Waals integration on 2D semiconductors for three-dimensional complementary logic systems Open
The integration of high-κ dielectrics with two-dimensional (2D) semiconductors has long been limited by the low reactivity of their dangling-bond-free surfaces and the scalability issues of conventional deposition techniques. Here, we repo…
View article: Multiscale Methods for wave propagation in materials with sign-changing coefficients
Multiscale Methods for wave propagation in materials with sign-changing coefficients Open
From a mathematical perspective, the extraordinary properties of metamaterials are often reflected in the coefficients of the governing partial differential equations (PDEs). These coefficients may fall outside the assumptions of classical…
View article: Unusual sign-changing Faraday effect in nanometer-thick magnetic films
Unusual sign-changing Faraday effect in nanometer-thick magnetic films Open
It is generally believed that the magneto-optical Faraday effect appears in the the bulk of a magnetic material and its sign is fully determined by the sign of the non-diagonal permittivity element. Here we reveal an additional contributio…
View article: Enhancement of the Ferroelectric and Ferromagnetic Characteristics of Composite Multiferroics to Facilitate Broadband Electromagnetic Wave Absorption
Enhancement of the Ferroelectric and Ferromagnetic Characteristics of Composite Multiferroics to Facilitate Broadband Electromagnetic Wave Absorption Open
Multiferroic composites of xNi0.8Zn0.2Fe2O4/(1 − x)BaTiO3 (x = 0, 0.1, 0.3, 0.5, labeled NZFO/BTO) with ~100 nm particle size were synthesized via high-energy ball milling and thermal annealing. The X-ray diffraction shows a co-existence o…
View article: Dielectric Modulation Based on TiO <sub>2</sub> Phase Transition Engineering
Dielectric Modulation Based on TiO <sub>2</sub> Phase Transition Engineering Open
Phase transition engineering has been considered an effective means to modulate the dielectric properties of electromagnetic materials, endowing them with tunable properties. However, research on the specific mechanism by which phase trans…
View article: Features of Synthesis, Crystal Structure, Thermal and Electrical Properties, XPS/NEXAFS Study of Pyrochlore-Type Bi2Cr0.5Co0.5Nb2O9+Δ
Features of Synthesis, Crystal Structure, Thermal and Electrical Properties, XPS/NEXAFS Study of Pyrochlore-Type Bi2Cr0.5Co0.5Nb2O9+Δ Open
The phase-pure cubic pyrochlore of the Bi2Cr0.5Co0.5Nb2O9+Δ composition can be successfully synthesized by a modified sol–gel method (Pecini method-PM) and a traditional solid-phase method (SPM). A feature of the solid-phase synthesis meth…
View article: Effect of Metal Oxide Nanoparticles on the Breakdown Voltage of Transformer Oil Containing Cellulose Particles
Effect of Metal Oxide Nanoparticles on the Breakdown Voltage of Transformer Oil Containing Cellulose Particles Open
Failures are sometimes attributed to the deterioration of insulating oil, with contamination by cellulose particles. Such contamination lowers the dielectric strength of the oil. This study investigates the effect of cellulose contaminatio…
View article: Enhanced physical properties and antimicrobial activity of PEG-4000 capping on CoxCu1-xFe2O4 nanoparticles for technological applications: Synthesis and characterization
Enhanced physical properties and antimicrobial activity of PEG-4000 capping on CoxCu1-xFe2O4 nanoparticles for technological applications: Synthesis and characterization Open
This research presents an in depth study of the electrical and antibacterial activity of Co x Cu 1-x Fe 2 O 4 and their polymer nanocomposites. The citrate precursor auto-combustion method was successfully used to synthesize the nanostruct…
View article: Nature of the Dielectric Anomaly in Na0.5Bi0.5TiO3–Based Ferrolectrics
Nature of the Dielectric Anomaly in Na0.5Bi0.5TiO3–Based Ferrolectrics Open
The temperature–frequency dependence of dielectric permittivity in Na0.5Bi0.5TiO3 (NBT) -based compositions displays a diffused, frequency-independent maximum along with a frequency-dependent shoulder below this maximum. This behavior devi…
View article: Influence of the chain length on the thermal and dielectric properties of thermotropic liquid crystals
Influence of the chain length on the thermal and dielectric properties of thermotropic liquid crystals Open
View article: Barium Strontium Titanate Thin Film for Electrically Tunable THz Metasurface
Barium Strontium Titanate Thin Film for Electrically Tunable THz Metasurface Open
Barium strontium titanate (BST) thin films are distinguished for their ferroelectric behavior which makes them highly promising for optical and microwave applications, but there is a lack of studies in the important terahertz (THz) frequen…