Materials Literature
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Two types of RTSAs are presented, which spectrally decompose a broadband electromagnetic signal in space in real-time. The first system is based on an array of LWA fed using an array of phasers, where the dispersion of the phasers in conjunction with the natural frequency scanning of the leaky-wave antenna enable the…
Lead magnesium niobate—lead titanate (PMN-PT) exhibits exceptional electromechanical properties, considered as a highly efficient transduction material for vibration energy harvesting and acoustic sensing applications. It is reported in the literature that the PMN-PT undergoes structural phase transitions with changes…
The paper proposes a new type of the synchronous AC machine operated on a principle of the electric field effect. The proposed machine has smaller size and lighter weight than the standard electromagnetic synchronous machines with the same rated parameters. Another important advantage is a simple structure of the mach…
A hybrid silica nanoreactor framework with poly(ethylene oxide) (PEO)-perforated silica walls is designed to prepare hollow MnO nanoparticles with different nanocomposite architectures under highly controlled conditions, by X. Li, J. Wang, and co-workers on page 5269. The resultant hollow nanoparticles are integrated…
The world is facing the global challenge of developing energy “sources” which are both sustainable and environmentally friendly, while keeping the same “energy services”. Fusion of light nuclei (such as the hydrogen isotopes Deuterium and Tritium) is such an option. The talk will outline first the physics background f…
This paper investigates the film instability and structural evolution of solvent‐annealed polystyrene‐block‐poly(4‐vinylpyridine), P(S‐b‐4VP), as thin films of initially monolayer thickness on bare substrates (SiOx/Si) and substrates coated with end‐grafting PS (PS–SiOx/Si) under tetrahydrofuran vapor. At an early sta…
Abstract The properties that make diamonds so spectacular as precious gems also give them incredible applications in quantum technology. A Research Unit is investigating the basic characteristics of diamond in quantum physics and opening up new avenues in semiconductor technology, quantum information processing and me…
Voltage dips are one of the most important power quality problems. The major disadvantage in studying this phenomenon is the difficulty to obtain the necessary data. This disadvantage is to the fact that the phenomenon is random and monitoring must be carried out for long periods of time. In these conditions the paper…
Plasmonics has attracted many researchers by its enourmous possibilities. However, the plasmonic materials of interest are mostly precious metals such as gold and silver. In this work, plasmonic properties of various sized non-precious metallic nanodisks are studied. Our calculations show that the non-precious metals…
Abstract We present some approaches for modulation of light by hybrid liquid crystal materials. Mixtures of liquid crystals with chiral ionic liquids are used for modulating the incident light amplitude by alternative electric field. Hybrid cells of liquid crystals with inner surfaces, being modified by metallic and s…
Abstract We investigated the electrical performance of TiO x ‐IZO Thin‐Film Transistor (TFT) changing the target composition ratio of IZO, and Radio‐Frequency (RF) power of Titanium target. Titanium and IZO target were co‐sputtered by using RF magnetron co‐sputtering system. The samples were postannealed in the air, a…
The development of smart, nano-scale, low-power-consumption spintronic-based devices has been made possible through recent advances in modern fabrication and characterization nanomagnetism technologies. Dimensionality and interfacial effects promote much of the new properties observed in complex multi-layered nanostru…
This research was conducted to investigate the effect of nano-wollastonite and the use of polymers polyvinyl chloride and heavy polyethylene on the fire resistance of particleboard with three layers made of pepper stalk and industrial wood particles. Urea-formaldehyde adhesive with concentration of 12% containing nano…
Abstract Recently, the display technologies using colloidal quantum dot (QD) materials have become one of the most important technologies in the display industry. But, the organic charge transport layer for quantum dot‐light‐emitting diode (QD‐LED) can cause the device stability issues. In this article, we describe th…
The purpose of this paper is to characterize the performance of a novel dual-stator six slot four pole (6/4) flux switching permanent magnet machine. The proposed dual-stator 6/4 topology eliminates even order harmonics in the flux linkage and back electromotive force, which are present in the conventional single stat…
E apresentada uma breve revisao sobre a sintese e propriedades de nanocompositos de poli metacrilato de metila (PMMA) com argilas montmorillonitas (MMT) organicamente modificadas via polimerizacao in situ assistida com agitacao por ultrassom. Os resultados das dessas polimerizacoes foram comparados e discutidos, assim…
This paper designs two six-phase hybrid-excited flux-switching (HEFS) machines with E-core and C-core stator laminations, respectively, for electric vehicles (EVs). The iron bridges are adopted in stators to simplify the manufacturing process. First of all, focused on the flux-regulation capabilities, the steady-state…
The effect of the external magnetic field on microwave response from composites containing CoFeSiBCr amorphous wires has been demonstrated by measuring S-parameters in free space in the frequency band of 0.9-17 GHz. Two types of composites made of lattices of continuous and short -cut wires are considered to employ di…
Artificial media with effective refractive index can be built by inserting small metal inclusions in a bulk dielectric material. The possibility and effect of including such a material in a periodic structure realized in stripline technology have been investigated. It has been shown that the electromagnetic band-gaps…
The domains of propagation, the phase characteristics and the lower and upper cut-off frequencies of the circular waveguide, containing a thin central dielectric cylinder, surrounded by a thick latching ferrite toroid, magnetized azimuthally to remanence, are studied for the normal TE01mode, assuming equal values of t…