Materials Literature
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This paper aims to apply a thermal treatment of beech and spruce sawdust dried to 10% moisture in order to determine the mass loss and to obtain pellet sets. This paper considers the colour change of the treated material during the treatment, as function of time and temperature increase. It also highlights the changes…
In this study, we investigated the electrical, optical and structural properties of aluminum-doped ZnO (AZO) thin films by RF magnetron sputtering under different working pressure of 5 - 40 mTorr. Optimization of the prepared thin films shows low resistivity of 6.11 × 10-4Ω-cm, mobility of 4.295 cm2/V-s and carrier co…
Abstract A 31‐inch FHD (1920times1080) AM‐OLED TV was developed by using a‐IGZO TFTs. Co‐planar type of a‐IGZO TFT was fabricated at Gen 4.5 glass substrate with IGZO (1:1:1) AC sputtering system for AM‐OLED. We also used Fine Metal Mask (FMM) for R,G,B sub‐pixel arrangement.
Ultrathin Cu(In,Ga)Se2(CIGS) films were deposited by 1-stage, 2-stage and 3-stage co-evaporation processes. In situ, real time spectroscopic ellipsometry (RTSE) was used to study the growth dynamics of the ultrathin CIGS films. Time dependent surface roughness layer (ds) and bulk layer (db) thicknesses were extracted…
Based on a modified form of Archard’s wear theory, significant data were obtained using the finite element analysis code DEFORM during the process of warm extrusion, including instantaneous interface temperature, sliding velocity, and interface pressure distribution of every node. From the acquired data, the wear of t…
Cuprous oxide is deposited on various substrates such as stainless steel (SS), Cr-Au (20-100 nm) coated SS, fluorine doped tin oxide on glass (FTO-G), Cr-Au (20-100 nm) coated FTO-G and Ga doped ZnO (GZO) through potentiostatic electrodeposition method. A wide range of potential is used for deposition and all the resu…
The need for photovoltaic coverglass coatings that are both broadband antireflective and omni-directional has led to the development of biomimetic moth-eye type graded index of refraction surfaces. In this study, we evaluate generic nanostructured coatings derived using both top-down and bottom-up approaches. It is fo…
Investigation on polycrystalline electroceramics involves the synthesis, the consolidation and the analysis of the electrical behavior, along with careful evaluation of the final microstructure. The synthesis of ceramic powders with controlled characteristics is crucial in the study of materials with optimized propert…
Abstract Diatoma polonica, a species first observed in samples from the Western Carpathians river systems in southern Poland, is described as a species new to science. The new species status resulted from the fact that the dimensions of cells found did not fit any of the diagnoses given in the literature for the Europ…
We investigate the mechanism of off-leakage current in InGaZnO thin-film transistors using a two dimensional device simulator. In order to reproduce the magnitude of experimental data, deep donor-like trap states probably originating from the oxygen vacancies are introduced in IGZO channel, which significantly affect…
The process of obtaining a uniform dispersion of nanosized powders by applying two step process of mixing and adjusting viscosity was studied. The mixed paste was used as the electrode of direct ethanol fuel cells (DEFC). And power density of the fuel cells was measured. A high power density was realized by addition o…
As a result of investigating low temperature isomerization of n -hexane at 130, 140, 150, 160°C in a flow reactor with a fixed bed of catalyst of the Al 2 O 3 /ZrO 2 /SO 4 /Pt type a ratio of components in the catalyst system was selected and process conditions were defined, which allow to obtain highly branched high-…
This paper proposes a novel voltage control method for single-phase shunt active power filter (SAPF) using the space vector pulse-width modulation (SVPWM). The method provides compensation for harmonics and reactive power and has an excellent dynamic performance. A detailed analysis is presented for the principle of s…
This paper presents a control scheme for piezoelectric actuators (PEAs) in high-speed triangular trajectory scanning applications. Nonlinear hysteresis is compensated using a Maxwell resistive capacitor model. Based on the frequency response of the identified linear model, the feedforward compensation is proposed. Thi…
The molar volume of fcc phase in the Ni-Cr-Mo system has been evaluated by means of the CALPHAD approach based on experimental data from the literature. The molar volumes of the non-stable fcc Cr and Mo were determined by extrapolating volume data from several stable solid solutions combined with the first-principles…
Electromigration has been a dominant failure mechanism for interconnects in ULSI. Extensive research works on the understanding of electromigration and methodologies to enhance interconnect EM lifetime are being proposed. While the ultimate goal of all these studies are to extend the interconnect lifetime in ULSI, all…
The compressive properties of foamed polyethylene (PE) film with a closed cell for electronic devices have been investigated. A commercial closed cell foamed PE film with a density of 330 kg/m3 was used. Quasi-static testing was carried out at strain rates of 10−3 to 10−1 s−1. The strain rate of the impact test was ap…
In this investigation, we have synthesized pure and copper decorated tin oxide nanostructures with a facile yet environment-friendly hydrothermal route. The sensing materials are characterized by X-ray diffraction, field emission scanning electron microscopy, and energy dispersive X-ray spectroscopy. Thick-film gas se…
Confocal photoluminescence scans of monocrystalline CdTe/MgCdTe double heterostructures epitaxially grown on lattice-matched InSb substrates reveal very low twin defect density, below 1 × 105cm-2. Room-temperature Shockley-Read-Hall (SRH) lifetimes of these samples are determined in the range of 35 ns to 86 ns using t…
Abstract An organic semiconductor, expressed as a quadrupolar linear conjugated system (DPP Linear‐c), consisting of a 1,4‐diketopyrrolo[3,4‐c]pyrrole (DPP) central unit and two quaterfluorenylphenyl arms at the 3‐ and 6‐positions of the DPP fragment, is studied in organic field‐effect transistors (OFETs). The strong…