Materials Literature
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The work presents numerous research findings on the stressstrain state of a building within the “base–basement–construction” system under a seismic load. The soil array was considered as volumetric nonlinear elastic viscose and plastic environment with a new computed behavioral pattern. The latter accounts for peculia…
In present work the influence of anodizing process parameters on PAOT geometric parameters for optimizing and increasing ETA-cell efficiency was studied. During the calculations optimal geometrical parameters were obtained. Parameters such as anodizing current density, electrolyte composition and temperature, as well…
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A series of Tm3+/Ho3+ sensitized 65GeO2-7BaF2-10B2O3-4Al2O3-4ZnO2-10Na2O glass samples were synthesized using high temperature melting method. The spectral properties were systematically studied when Ho3+ concentration was 0.1, 0.3, 0.5 mol% and Tm2O3 changed from 0.3 mol% to 2.5mol%. Differential thermal analysis sho…
Furnace annealing and pulse laser treatments, including nanosecond laser treatments (KrF laser 248 nm wavelength, 20 ns pulse duration and XeCl laser 308 nm wavelength, 10 ns pulse duration) and femtosecond laser treatments (Tisapphire laser, 800 nm wavelength, <30 fs pulse duration) were applied for crystallization o…
The simulation results of different devices based on carbon nanotubes (CNT) and graphene are described in the paper. The combined numerical model of hybrid integrated structures including resonant tunneling diode and field-effect transistor (RTD-FET) is proposed. Simulation of RTD-FET based on CNT of different types (…
The behavior of the absorbance profiles of free-base 5,10,15,20–tetraphenylporphyrin (TPPH2) and zinc 5,10,15,20-tetraphenylporphyrinate (ZnTPP) under exposure to HCl vapors was investigated to establish in detail the mechanism of protonation of these porphyrinic compounds and their potential for use as HCl sensors. W…
Hydrogels have proven their ability to respond to changes in the local environment [1-6]. While the results obtained by many researchers highlight the promising nature of hydrogels in biomedical sensors, work has yet to be done to demonstrate the ability of hydrogels to maintain a response after being stored for an ex…
The molecular structures of four conformers [cone (CONE), partial cone (PACO), 1,2‐alternate (12A), and 1,3‐alternate (13A)] of benzoylmethoxythiacalix[4]arene 1 and the corresponding alkali metal ion complexes were optimized by using a mPW1PW91/6‐31G(d,p) (hybrid Hartree–Fock density functional) calculation method. T…
Piroliz oksijensiz ortamda organik maddelerin yüksek sıcaklıklarda ısıtılması sonucu termal olarak bozunması işlemidir. Ömrünü tamamlamış lastiklerin geri kazanımında kullanılan piroliz yöntemi, son yıllarda ilgi çekici bir konu olmaktadır. Ömrünü tamamlamış lastiklerin piroliziyle, aktif karbon imalatında ve yol katr…
Yttrium oxide (Y2O3) films have been successfully deposited with yttrium-ethylenediaminetetraacetic acid (EDTA・Y・H) complexes prepared by various milling techniques. The effects of the properties of the EDTA・Y・H complex on the properties of the deposited Y2O3 films have been analyzed. Seven different types of the raw…
Questa tesi e stata sviluppata presso il Laboratorio di Meccanica delle strutture biologiche (Labs) del Politecnico di Milano nell'ambito del dottorato di ricerca in Bioingegneria. Il tema principale di questo lavoro e l'analisi a fatica di dispositivi cardiovascolari in Nitinol, tramite un approccio combinato numeric…
This paper presents educational experiments, in which propagation and interference of elastic waves with a frequency of 25–30 kHz in thin plates are analysed. For obtaining these waves a magnetostriction radiator and an ultrasonic generator are used. The described devices are available for production in an educational…
We have studied the physical properties of Li -doped compound Fe 2 As , which is isostructural to the famous iron-based superconductor LiFeAs . The results indicate that both a-axis and c-axis of Li x Fe 2-x As increases with the increase in Li content when it is less than 0.2. The Néel temperature of Li x Fe 2-x As d…
GaAs nanowires were grown on the semi insulating undoped GaAs (111)B wafer by using metal organic chemical vapor deposition, MOCVD. The growth follows the vapor-liquid-solid method by applying nanoparticle gold colloid as a catalyst to forms a eutectic liquid alloy with the wafer substrate. The GaAs wafer were first d…
Refractive indices of the highly polar compounds are evaluated by computation from first principles combined with molecular dynamics simulation. The molecular polarisability is obtained by density functional theory (DFT) using the B3LYP potential; the equilibrium density in the liquid phase is calculated utilising the…
Holograms recorded in dichromated gelatin (DCG) are usually sealed with a glass plate cemented with an epoxy glue to protect the holograms from moisture in the environment. An investigation of the wavelength properties of sealed DCG holograms had been carried out paying attention to holograms which were exposed to dif…
First-principles study of chemical-edge-doping effect on transport properties of armchair-edge graphene nanoribbons, Nishida, Yasutaka, Yoshida, Takashi, Aiga, Fumihiko, Yamazaki, Yuichi, Miyazaki, Hisao, Kajita, Akihiro, Sakai, Tadashi
In this paper we study the process of plasma enhanced chemical vapor deposition (PECVD) of carbon nanostructures in the form of a film, the pillars, the flakes at a temperature of 100-350 °C from the vapor-gas mixture H2+CO+Ar. Also in the paper presents the structural features of the carbon nanopillars obtained at 25…
Au nanorod arrays were fabricated using a focused gallium (Ga) ion beam ( fib Au_NRs) with various levels of Ga ion energy. The formation of AuGa 2 on fib Au_NRs was controlled by adjusting the level of Ga ion energy and subsequent heat treatment in order to increase the effect of surface-enhanced Raman scattering (SE…