Materials Literature
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Two new complexes, namely [Cu(L1)(NO 3 )(bipy)] (1) and [Cu 2 (L2) 4 (H 2 O) 2 ] (2) (HL1= 2-ethoxynicotinic acid, HL2= 2-methoxynicotinic acid and bipy=4,4′-bipyridine) have been synthesised and structurally characterised by single-crystal diffraction analysis. The structure of complex 1 is a ladder-like chain, which…
This study was computationally investigated the effects of EGR and boost pressure to confirm the mechanisms for extending operation range and reducing NOx emission of a HCCI engine fueled with natural gas. The CHEMKIN-PRO was used to perform the numerical analysis. To set boundary of operating range, boost pressure wa…
A circuit is described that enables the output of a thermoelectric generator (TEG) to be boosted to around 5V over a TEG open circuit voltage range of 60 to 400mV. The topology has a JFET and MOSFET start‐up system which operates sequentially to charge a reservoir capacitor. When the capacitor is charged, the topology…
This paper suggests a dc analysis of an amorphous silicon based Metal-Insulator-Semiconductor (MIS) structure for solar cells applications. Since it has been reported that biasing the cell was one of the techniques that improves conversion efficiency of MIS transistor-based solar cells, it tries to get accurate compre…
Alloying elements such as Fe, Zr and Mg in Cu were added by direct addition of powders and by feeding of cored alloy wire filled with alloying element powder in a lab scale furnace. The yield of Fe was the highest for both addition methods. Cored wire feeding was significantly more effective than the direct powder add…
The thermomechanical stability of nanostructured (NS) commercially pure titanium is studied in the temperature range of 20–600°C using the method of dynamic mechanical analysis. It has been found that the maxima observed in the temperature dependence of the loss angle tangent (t = 350–600°C for the analyzed cyclic loa…
We report a highly efficient linear electrooptic (EO) effect of a tight-pitch ferroelectric liquid crystal (FLC) in a microchannel architecture where the FLC molecules are vertically aligned on the surrounding surfaces. Due to the topographic confinement in a large surface-to-volume configuration, the competing anchor…
In this paper, a single layer Rosen type piezoelectric transformer is produced using a hard PZT piezoelectric ceramic. It is then tested. A theoretical understanding of its operation is developed through 1D analysis based on an analytical solution of a linear system of equations that represents boundary conditions. Th…
In this paper, a real-time Digital Signal Processing (DSP) architecture is proposed to generate and process multi-frequency signals for eddy currents testing. This architecture was implemented on a dedicated instrument whose processing core is a Field-Programmable Gate Array (FPGA) for DSP purposes. Stimulus generatio…
The super-filling of high aspect ratio through silicon vias (TSVs) is a technical challenge for 3D integration. For optimizing the super-filling, the numerical simulation models of copper electro-deposition with suppressor and accelerator are founded. The arbitrary Lagrange-Eulerian (ALE) method for solving moving bou…
Novel preparation methods for preparing (hydroxy modified) PBI monofilament fiber and PBI resin are investigated and developed by the co-polycondensation of new AA-monomer 1,2,4,5-tetraaminobenzene tetrahydrochloride (TAB•4HCl) respectively with BB type monomers 2,5-dihydroxyterephthalic acid (2,5-DHTA), hydroxytereph…
CrN coating was deposited on 3Cr2W8V alloy by PVD and then processed with electron beam surface alloying process. The pulsed times of HCPEB was changed from 1 to 25 to prepare different specimens. Microstructures were investigated by optical metallurgical microscopy (OM), results show that the particles located in sur…
M-ZrO2 nanoparticles with a diameter range of about 10 nm are successfully synthesized with zirconium nitrate as zirconium source and stronger ammonia water as precipitant at 210 °C for 48 h via the easy hydrothermal method. The phase, the morphologies and optical absorption properties of the samples have been charact…
Cast-resin dry-type transformers are widely used in high power applications. Long-term operation increases the extent of damages if no proper safeguards are taken. The major cause of transformer damages is insulation deterioration, which is correlated with partial discharge (PD) occurrence. Recent PD research studies…
In-situ characterization of the mechanical behavior of geckos spatula has been carried out in detail using multi-mode AFM system. Combining successful application of a novel AFM mode, i.e. Harmonix microscopy, the more detail elastic properties of spatula is brought to light. The results obtained show the variation of…
A model of the magnetization distribution in thin ferromagnetic films that are in the so-called supercritical state has been considered. The model makes it possible to take into account the real distribution of the magnetization more precisely in ferromagnetic films than open and closed models. The theoretical results…
Temperature tunable photonic crystals were fabricated based on liquid-infiltrated inverse opal films which were prepared by Tb3+doped SiO2with a sol-gel method. The photoluminescence was investigated with the photonic band gap shift tuned by temperature. The results show that obvious suppression of spontaneous emissio…
A comparative study of the effect of low-energy treatment with Ar ions, high-energy implantation with Ti ions, and subsequent deposition of bioactive nanostructured Ti-Ca-P-C-O-N coating on structure and properties of the polytetrafluoroethylene (PTFE) surface was carried out. The fcc phase based on titanium carbonitr…
In this paper, a facial skin condition estimation function was developed on a smartphone. Skin image was captured by the image module of smartphone. An algorithm based on gradient operators was used to quantify the facial skin conditions by providing results as an index. Linear regression was applied to model the rela…
Gold nanometallic structures have been prepared by application of square wave potential regime to a platinum electrode in a 1.0 × 10 −3 M HAuCl 4 + 0.5 M H 2 SO 4 solution. Formation of gold particles onto the platinum surface has been followed by cyclic voltammetry, energy-dispersive X -ray spectroscopy, and scanning…