Materials Literature
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Titanium Oxide (TiOx) is a material that can be used as optical spacer and injection/transport layer in organic devices as OLEDs and OPDs, as well as a high relative dielectric constant, (high-k), dielectric for organic thin film transistors, (OTFTs). For this last application, a low temperature and low cost depositio…
We propose an analytical model of the bi-omega particle consisting of two opposite-oriented and spaced omega resonators. Properly placing the two omega particles very close to each other, the coupling effect between them contributes to shift down the resonant frequency, achieving a simple and deeply electrically small…
A series of composites of Polyaniline (PANI) and Polybenzobisoxazole (PBO) nanocomposites were prepared with different PANI compositions. The methanesulfonic acid (MSA) was used as dopant and solvent. The structures and morphology of the obtained nanocomposites were fully characterized by FT-IR, TGA, SEM and TEM. The…
The paper presents the experimental research on concretes and in-situ research on existing reinforced concretes elements, using “Pulse Velocity Method”. The “Pulse Velocity Method” it is an acoustical method which uses the ultra-sounds with 20 to 200 kHz frequency. The in-situ acoustic results are used to establish th…
The research used activated carbon fiber (ACF) as adsorbent to remove atrazine, a kind of herbicide. It set a series of static adsorption experiments under different solution temperature, pH value and initial concentration to get a optimum adsorption condition. The experiment shows that the optimum pH for the removal…
A scheme for production of a nanocomposite—functional carbon nanotube (FCNT)/noncovalently added diamine—is proposed. The nanocomposite is investigated by thermomechanical analysis and infrared spectroscopy. It is found that the epoxy binder curing by the nanocomposite results in a higher heat resistance of the epoxy…
In this paper the magnetostrictive material considered is Terfenol-D. Its hysteresis is modeled by applying the DPM whose identification procedure is performed by using a neural network procedure previously publised [. The neural network used is a multiplayer perceptron trained with the Levenberg-Marquadt training alg…
A novel MgO-filled rectangular carbon nanocapsules was fabricated by pyrolyzing acetonitrile with the assistance of MgO and a small quantity of Fe3+. The nanocapsules were analyzed by powder X-ray diffraction, transmission electron microscopy, and energy dispersive X-ray spectroscopy. The lengths of the rectangular na…
The hot-dip coatings containing Zn-Al-Mg-Ce were prepared through congruent melting. The anti-corrosion performance of the coatings was researched using the weight loss rate by the neutral salt spray testing. The reasons of the effects of the elements Al, Mg, Ce on the anti-corrosion performance promoting were researc…
Ultrafine TiC powders with a grain size of about 25 nm were synthesized from nanoanatase TiO2/carbon black mixtures by mechanical activation-assisted vacuum carbothermal reduction (MCR) reaction. The effects of mechanical activation and carbon sources on TiO2 carbothermal reduction (CR) were also investigated. Results…
The hydrophilic modification of poly (ethylene terephthalate)(PET) fabric is significant for industrial production. Its studied by ultraviolet radiation, nanoTiO2, H2O2 and NaOH. The results show the best condition is 3%nanoTiO2, 5%H2O2 and 3%NaOH, under 1000W UV radiation. With only about 30~35 minutes irradiation th…
We report the integration of one selection diode and one resistive-switching memory element (1D1R) structure based on a GaAs diode on germanium-on-insulator on a Si substrate integrated with Cr/TaOx/Al memory element. The 1D1R device showed unipolar resistive-switching with an ON/OFF resistance ratio of over 102 withi…
This paper proposes a multiphase control strategy for a high dynamic brushless DC linear motor as an alternative for conventional three-phase field-oriented control. Analysis of the magnetic field waveforms shows that three-phase control is not optimal for the 6-slot 7-pole motor topology. Therefore, a multiphase cont…
Background Monoamine oxidase B (MAOB) is a mitochondrial outer membrane protein that degrades monoamines such as dopamine. Thus, MAOB inhibitors are used to treat for instance Parkinson’s disease patients. MAOB inhibitors, however, have neuroprotective properties that are independent on the monoamine-degrading capabil…
The nanosecond lasing performance of core-shell and alloyed CdSe/ZnS colloidal quantum dots is reported. Low amplified spontaneous emission and laser oscillation thresholds of 0.55mJ/cm2and 0.9mJ/cm2are demonstrated for, respectively, thin-films and distributed-feedback cavity structures.
The machining at elevated workpiece temperatures has many technological advantages and was intensively addressed in research within the last 20 years. Hot machining is foremost applied for difficult to cut materials, such as stainless steels. The key reason of the advantages of hot machining of steels is a reduction o…
Este trabalho envolveu a caracterização microestrutural, vibracional e das propriedades dielétricas da hexaferrita de bário obtida pelo método cerâmico. A hexaferrita de bário (BaFe12O19) foi processada por moagem de baixa energia seguida de tratamento térmico. A caracterização estrutural indicou que amostras calcinad…
Fuel cells heat dissipation and cooling is a vital part of PEMFC heat management. This paper used pure water as the coolant to control the temperature distribution inside fuel cells. Established cooling channels geometrical model and simulated the temperature distribution in the steady state by using software SINDA/FL…
Forsterite single crystals doped with chromium and lithium and exposed to ionizing radiation have been studied using multifrequency electron paramagnetic resonance (EPR) spectroscopy. It has been found that ionizing irradiation up to a dose of 10 8 rad does not lead to a significant change in the concentration of sing…
In this paper, an analytical density of states modeling and simulation study was performed for 3m, 3m+1 and 3m+2 armchair-edge graphene nanoribbon under smaller tensile uniaxial strain. It has been discovered that the irregular variation in DOS as a function of energy when the tensile uniaxial strain is increased from…