Materials Literature
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Results from a detailed investigation on the structural, optical, electrical and magnetic properties of polycrystalline bulk samples of La1-xCaxMnO3 (x=0, 0.3, 0.5 and 0.7) synthesized by solid state reaction method are presented. The Rietveld analysis of the X-Ray diffraction (XRD) profiles clearly indicated that the…
Ti-6Al-4V compact bulk was fabricated by Spark plasma sintering (SPS) with initial pressure of 1.7 MPa, holding pressure of 50 MPa, heating rate of 100 °C/min, and holding time of 5 min at different sintering temperature. The fracture morphology of the specimen sintered at different temperatures was observed to invest…
Partial discharge (PD) monitoring is an established technique used to assess the condition of AC gas insulated switchgears (GIS). The growing application of High Voltage Direct Current (HVDC) transmission systems has triggered research projects focusing on the measurement and interpretation of PD signals in DC GIS. In…
Summary This research is to study the potential of using polystyrene nanoparticles and chitosan solution to increase the anti‐bacterial activity on cotton fabrics prepared by a conventional pad‐dry‐cure method. Firstly, cotton fabrics were coated with chitosan solutions at the concentrations of 0.1, 0.5, and 1.0 (%w/v…
A new method to determine the resistance of the breakdown channel, current, and characteristic time is based on the measurements of the breakdown current pulse in a wide range of parameters of the measurement circuit. A problem with time-dependent resistance of the breakdown channel is numerically solved. An experimen…
Wettability is one of the important performance measuring the hydrophobicity of metal surface. There has important relationship between microstructures and surface wettability. In this paper, square pillar microarrays with different geometrical parameters were processed on hydrophilic metal substrates by high-speed mi…
Silicene, a monolayer of silicon atoms arranged in a honeycomb lattice, has been undergoing rapid development in recent years due to its superior electronic properties and its compatibility with mature silicon-based semiconductor technology. The successful synthesis of silicene on several substrates provides a solid f…
This paper presents the results of investigations of the ordering of Jahn-Teller distorted MnO6 octahedra in lightly doped single crystals of the composition La1 − x Sr x MnO3 (0.12 < x < 0.175) using the complex technique including measurements of elastic moduli and damping of high-frequency acoustic waves (700 MHz),…
Results of investigations having the purpose to evaluate different spaces suitable for PD signal separation, are presented in this paper. Signals recorded during tests performed on real objects where the number of PD sources were a-priori known, have been projected in different spaces and the same procedure based on O…
AIM: Alumina nanowell based disposable diagnostic biosensor for detecting and quantifying levels of prostate-specific antigen (PSA) from human serum has been designed, fabricated and tested. MATERIALS & METHODS: The biosensors were designed by integrating nanoporous alumina membranes onto printed circuit board platfor…
E Ortel, L Pellutie, F Pellegrino, V Maurino, J Mielke, B Powierza, I Hausler, W Osterle, V-D Hodoroaba; Shape Recognition of Nanoparticles by High-Resolut
As the nuclear radiation has started to be used in a variety of different fields, it is important to be protected from it, and thus the radiation measurement becomes vital. The quality of the performance of a detection system, used for the energy measurements, is important. It is characterized by the width of the puls…
Bending-induced phase transition in monolayer black phosphorus is investigated through first principles calculations. By wrapping the layer into nanotubes along armchair and zigzag directions with different curvatures, it is found that phase transitions of the tubes occur when radius of curvature is smaller than 5 Å i…
IEC standard for the design and qualification of the insulation system of inverter-fed motors controlled by power electronics refers to the measurement of partial discharge inception voltage (PDIV) or repetitive partial discharge inception voltage (RPDIV). This is, however, not a simple testing procedure when carried…
A study concerning the effect of TiO 2 on duck eggshell membrane as separator in supercapacitor applications. Concentration of TiO 2 on duck eggshell membrane are 1 %wt, 5 %wt and 10 %wt respectively. Construction capacitor cell is shaped sandwich system. Membrane separator placed in the midst of the two carbon electr…
Experiments on measuring the conductive properties in a series of “thin” (10–12 µm) and “thick” (170–250 µm) film samples of unplasticized and plasticized PVC previously subjected to thermolysis (partial dehydrochlorination in solution) simulating the thermal aging of polymer PVC insulation in electrical cables and co…
There is a need to develop materials with controlled electrical resistivity, reduced space charge accumulation, higher thermal conductivity, higher dielectric strength and enhanced voltage endurance to cope with DC stresses in High Voltage Direct Current (HVDC) transmission systems in addition to HVAC requirements. If…
A novel methacrylate modified thiophene (TE-MA) was synthesized, and the electrochemical method resulted in the formation of the polymer (PTE-MA). Structure characterization and tests of PTE-MA, including FT-IR, morphology, electrochemical, spectroelectrochemical and electrochromic properties, were systematically expl…
Christian Lang, Matthew Hiscock, James Holland, Susumu Yamaguchi, David Joyce, Georgia Vatougia; New Developments in Automated Particle Analysis in the Ele
Organic cotton, which is produced without any chemical fertilizers and pesticides, is playing a vital role in creating a less harmful environment. An investigation of the properties of weft knitted fabrics produced from organically made cotton vis-à-vis regular cotton knitted fabric is reported. The yarn is made with…