Materials Literature
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Abstract The structures and second‐order nonlinear optical (NLO) properties of a series of chlorobenzyl‐ o ‐carboranes derivatives ( 1 – 12 ) containing different push‐pull groups have been studied by density functional theory (DFT) calculation. Our theoretical calculations show that the static first hyperpolarizabili…
Special consideration is necessary choosing materials and selecting design for dynamic cables due to the mechanical stress, sometimes in combination with a wet design, experienced by the cable. For high voltage cables (>;36 kV) this is mainly related to the required (IEC 60840) metallic water barrier and for wet solut…
Micromagnetism of dense permalloy antidot lattices from anodic alumina templates, Gawroński, Przemysław, Merazzo, Karla J., Chubykalo-Fesenko, Oksana, Asenjo, Agustina, del Real, Rafael P., Vázquez, Manuel
The specific effect of the interplay of defects such as vacancies, ripples and impurities on the electronic properties of graphene is investigated using the tight-binding Hamiltonian. While the transport gap increases with the vacancy concentration, the incorporation of impurities enhances the resonant states in the v…
The influence of the number and position of air gaps on the maximum withstand voltage of a typical 735-kV ice-covered station post insulator under DC voltage was investigated both experimentally and numerically. Numerical results obtained by the Finite Element Method (FEM) with the presence of a water film on the ice…
This paper presents a model for a theoretical maximum efficiency of a thermoelectric generator integrated with a Brayton-cycle engine. The thermoelectric cycle is presented in two configurations as a topping cycle and a preheating topping cycle. For the topping cycle configuration, the thermoelectric generator receive…
Copper–zinc–tin–chalcogenide (CZTSSe) with earth abundant elements has attracted increasing attention due to large absorption coefficient and band gap of ∼1.5 eV which is near the optimum band gap of single-junction photovoltaic devices. In this study, we used commercially available precursors to produce wurtzite Cu 2…
Abstract The microstructures and magnetic properties of Ce 32.15 Co 49.36 Cu 9.84 Fe 9.65 magnet sintered at the temperatures ranging from 1005 to 1105 °C were investigated. The results on scanning electron microscopy and X‐ray diffraction analysis indicate that the remanence B r of the magnets is mainly influenced by…
Defect free diamond films have tremendous potential in a variety of areas including optoelectronics and have been the focus of several studies. Before diamond growth, a seeding treatment to substrate is mandatory, which itself is a source of contamination and degrades the quality of diamond. In the present study, diam…
The present work deals with the use of a carbon fiber fabric for electrochemical purposes. To carry out such investigation, suitable working electrodes of C, Pt/C and Pt/PANI/C were manufactured. Two types of electrodes were made from: Yarns pulled out from the woven textile (CYEs) and strips, 1 cm x 2 cm area, cut fr…
Optically transparent anodic aluminum oxide (AAO) nanostructure thin film has been successfully fabricated from lithographically patterned aluminum on indium tin oxide (ITO) glass substrates for the first time, indicating the feasibility to integrate the AAO nanostructures with microdevices or microfluidics for a vari…
The authors describe a facile procedure for size-controlled synthesis of gold nanoparticles based on the reduction of Au3+ (HAuCl4) using Preyssler heteropolyacid (H14[NaP5W30O110]) under UV irradiation. Preyssler plays the role of green reducing agent and also efficient stabilizer. This method allows the synthesis of…
In this paper we demonstrate the design and development of a family of low-cost, self-powered, wireless sensor solutions utilizing both analog and digital principles. The sensors will utilize Graphene-based thin films integrated directly into the structure. For an immediately deployable digital sensing solution compat…
We present an electrical tunable spiral inductor design and simulation results. By integrating (011) oriented single crystal ferroelectric substrate [Pb(Mg1/3Nb2/3)O3](1−x)-[PbTiO3]x (PMN-PT, x ≈ 0.32) with tunable and switchable remanent strain property, the tunability of such magnetoelectric microwave inductor can r…
Thin films of tin sulphide (SnS) were deposited onto glass substrates using the thermal evaporation method. The substrate temperature, T s was varied in the range, 280–360 °C, keeping other growth parameters constant and the effects on the chemical and physical properties of the layers deposited were investigated. The…
We show that the radially anisotropic zero-index metamaterials can be used to realize spatial power combination within fan-shaped regions. When the radial component of the permittivity or permeability tensor tends to zero, the coherent omnidirectional radiations will occur when sources are within the fan-shaped metama…
This paper discusses the role of high voltage direct current (HVDC) voltage waveforms on partial discharge (PD) activity in paper/oil insulation systems. A variety of voltages were simulated by the PSIM software and synthesized using a high voltage amplifier. Kraft paper sheets were used to create defects incepting PD…
Noble metal nanostructures of different aspect ratios were synthesised and optically characterised at individual nanorod level. Rayleigh scattering spectroscopy/scanning electron microscopy measurements were performed to uniquely correlate optical signatures with nanorod size and shape. Scattering spectra of nanorods…
A silicide material with a good n-type thermoelectric property has been discovered. This silicide possesses a composition of Mn3−xCrxSi4Al2 (0 ≤ x ≤ 0.7) and hexagonal CrSi2 structure. The a- and c-cell parameters decrease with increasing the amount of Cr substitution. The absolute values of Seebeck coefficient and el…
Gemcitabine liposome injection (stealth liposomes) has facilitated the targeting of gemcitabine for cancer treatment. We systemically review liposome-based drug-delivery systems, which can improve pharmacokinetics, reduce side effects and potentially increase tumor uptake, for pancreatic cancer therapy. A novel liposo…