Materials Literature
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In this paper, a flexible ultrathin metamaterial absorber has been presented in X-band frequency range. Teflon substrate has been used as a dielectric, hence the proposed absorber offers flexibility and elastic nature. Simulated single-band absorptivity of 99.7% has been achieved at 10.28 GHz frequency with 188 MHz ha…
In order to study the temperature rise of winding hot spot when the oil-immersed transformer is started at different ambient temperature, the transient temperature field of transformer cold start under different temperature conditions is calculated based on the finite element simulation method. The relationship betwee…
Nowadays, oily wastewater is increasing along with the growth of various industries. So, wastewater treatment is necessary in order to protect the environment. In this study, a mullite ceramic membrane was prepared. Then, oily wastewater treatment with 200 mg L-1 concentration was investigated by the response surface…
Pillar[5]arene derivatives containing 3,3′-iminodipropanoic acid, its hydrazide, and amide fragments have been synthesized for the first time. The spectral characteristics (IR, 1 H NMR) of the synthesized macrocycles have been analyzed.
With device length approaching sub-10nm region in present day transistors, the coherent nature of electron cannot be overlooked, in this paper, we investigate the coherent electron transport under phonon dephasing for Armchair Graphene Nanoribbon (AGNR) which is a possible candidate material for future electronics.
Present study focuses on high aspect ratio Thru Mold Via (TMV) fabrication using nanosecond laser drill tool. Epoxy mold compound (EMC) with 25um filler size is used to demonstrate 50um diameter TMV. Smaller via size with increase in high I/O count and thinner packages are key platforms for system in package (SIP) and…
Abstract The behavior of a material upon deformation and subsequent heating is related to the stagewise development of the structure and is determined by the structure-forming processes developing under specific deformation conditions. The effect of the following relaxation processes on the thermal stability of the de…
We studied and demonstrated high-performance Ag epoxy composites. A variety of shaped Ag particles were teste to optimize the electrical properties and mechanical reliability. The resulting Ag epoxy composites containing flake-shaped Ag particles showed less than 5×10-7Ω·m electrical conductivity and about 20mΩ series…
Abstract Multilayer graphene has been obtained by ultrasonic splitting of graphite microparticles in a surface-active solvent that is a mixture of nonane and water and a surface-active surfactant, which provides dispersion of graphene in hydrophilic systems, has been selected. The chemical structure of the obtained ma…
Abstract This study investigates the effect of water vapor and hydrogen on the conductivity of perovksite-like cuprates Y(Pr)Ba2Cu3Oy and Sr2CuO3 at t = 20–150°С. It is demonstrated that the interaction of cuprates with a hydrogen-containing atmosphere results in intercalation of hydrogen or water into the structure o…
Various auxiliary-particle approaches to treat electron correlations in many-electron models are analyzed. Applications to copper-oxide layered systems are discussed. The ground-state magnetic phase diagrams are considered within the Hubbard and $$s$$ – $$d$$ exchange (Kondo) models for square and simple cubic lattice…
The chemical composition and origin of major REE minerals of aegirine, aegirine–arfvedsonite, arfvedsonite, and annite–riebeckite–arfvedsonite granites are studied for the Katugin Ta–Nb–Zr–Y deposit with cryolite in the southwestern part of the Aldan Shield. The REE mineralization of granites includes two types: (i) d…
This paper describes the development of a highly stretchable and durable textile electrode fabricated by simple stencil and screen printing methods. It specifically investigated the effects of an interface layer as a planarization layer between the conductive electrode and the textile on the durability of the textile…
Polyurethane shape memory polymer (SMP) are comparatively low in modulus. Hence, there is a need for incorporation of chopped strand mat glass fibers as reinforcing materials for the development of SMP composites (SMPC). In this study, glass fibers in different volume fractions which are 0%, 5%, 10%, 15% and 30% were…
Two-dimensional (2D) tunnel heterojunctions with an H-shaped energy barrier could serve as ultrathin memory selectors with good symmetry, non-linearity, and high endurance. Atomically thin 2D layered materials can potentially deliver high on-state tunneling current density. We explore the design space for H-shaped mem…
Abstract A modified Z-scan method for determining the nonlinear refractive index of colloidal quantum dots in the near-IR spectral range in the resonant excitation mode is proposed. It is demonstrated that the thermal effects related to heating of the solution due to strong light absorption can be mitigated by reducin…
Abstract The paper presents results of investigations on surface properties of transparent semiconducting thin films based on (Ti-Cu)oxide system prepared using multi-magnetron sputtering system. The thin films were prepared using two programmed profiles of pulse width modulation coefficient, so called V- and U-shape…
Abstract Centrifugation is used in fabricating, e.g., films with large areas and/or thicknesses of several micrometers. However, it has yet to be widely employed for chalcogenide compounds, due to their relatively weak solubility in most solvents. Determining the optimum conditions for preparing solutions of chalcogen…
Corresponding data set for Tran-SET Project No. 17CLSU08. Abstract of the final report is stated below for reference: "Reinforced Concrete (RC) structures are vital to the US’s civil infrastructure for their strength and versatility. Unfortunately, RC elements deteriorate rapidly when exposed to corrosive environments…
Abstract The adsorption and protective properties of the corrosion inhibitors SolIng IK-2, IK-3, and IK-4(A) are studied by the method of electrochemical impedance spectroscopy. It is found that these inhibitors efficiently protect against corrosion in 1 M HCl solution. The calculated degrees of surface filling indica…