Materials Literature
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This paper proposes a modeling method of the temperature characteristics of Preisach theory. On the basis of the classical Preisach hysteresis model, the Curie temperature, the critical exponent and the ambient temperature are introduced after which the effect of temperature on the magnetic properties of ferromagnetic…
The thin film of Sb2Se3 was deposited by thermal evaporation method and the film was annealed in N2 flow in a three zone furnace at a temperature of 290oC for 30 min. The structural properties were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and…
The advancement of nanotechnology has enabled the miniaturization of electronic components to the extent of several nanometres, thus leading to heat dissipation issues which often result in device failure. This thesis involves a fundamental study on phonon and electron transport in semiconductor materials commonly use…
The cost optimisation of 1‐GW offshore wind farms is investigated in this study. The feasibility of combining AC collector platforms and an HVDC converter platform to form a combined platform is assessed. The evaluation of different electrical connection topologies is undertaken for a wide range of different electrica…
We provide design and fabrication of robust GMR devices operating in the 3–15 µm spectral range. Optimized reflectors are designed with inverse numerical methods. Preliminary experimental spectra agree qualitatively with theory.
Significant progress has been made over the past years in order to better understanding of the materials used in nanoscience and nanotechnology. In addition, due to the development in additive manufacturing [1] and laser lithography, based on the photon polymerization of a variety of UV-curable photoresist it is now p…
This paper deals with the deformation of precision seamless tubes during the cold drawing process, using Finite Element Methods. The value of strain obtain by stereology measurement of degree grain boundaries deformation are compared with simulation result for each drawing pass. The material chosen was the E235 and E3…
Environmental compatibility of green composites has become an important characteristic as the need to reduce environmental hazards is increasing worldwide. Mechanical development, which replaces the non-sustainably based materials by biomass-based ones would be the assignment forced on researchers and designers of the…
Based on equal channel angular extrusion (ECAE), NiTiFe shape memory alloy (SMA) was subjected to severe plastic deformation in order to obtain the refined microstructures. Finite element method (FEM), electron backscattered diffraction (EBSD) analysis and transmission electron microscopy (TEM) were used to investigat…
Ionische gating is een techniek die een eenvoudige methode biedt voor toegang tot tweedimensionale elektrische transportsystemen door het vormen van een elektrische dubbellaag. Het is mogelijk om de geleidbaarheid van halfgeleiders en zelfs metalen effectief af te stemmen. In dit proefschrift is een nieuw type magneti…
The ability of a macrophage to engulf and break down invading cells and other targets provides a first line of immune defense in nearly all tissues. This defining ability to ‘phagos’ or devour can subsequently activate the entire immune system against foreign and diseased cells, and progress is now being made on a dec…
The uniqueness of iron is not only that it is one of the most common elements, and the production of its derivative (steel) «exceeds the production of other metals by 14 times», not only in its polymorphism, but also in the following: «conversion of BCC α-Fe (К = 8) into a denser FCC γ-modification (K = 12) with heati…
The report analyzes the results of the experimental-theoretical investigation of the response of brittle media (fine-grain concrete, fiber-reinforced concrete, ceramic brick, gabbro-diabase and limestone) to dynamic loading. To determine the properties of the studied materials under dynamic strain rates, the tradition…
Many flexible constitutive equations have been proposed in the last two decades for sheet forming simulations, but their use in forming industry is limited. The main reason is that various mechanical tests are required to determine the multiple parameters needed for such models. To solve this bottleneck, a polycrystal…
An alternative, friendlier methodology for the determination of the average manganese valence () of manganese oxides (mainly pure and doped spinels) is presented. This methodology is based on the facile determination of the concentration of Mn 2+ and Fe 2+ ions by atomic absorption spectrometry (AAS) and molecular abs…
With growing interest on ceramic fiber reinforced ceramic matrix composites (CMC) for accident tolerant fuel, the need for mechanical characterization of ceramic composite arises. It has been of particular interest to non-destructively evaluate the mechanical performance of these composites. Impulse excitation (IE) is…
The rubber-brass adhesion is influenced by the chemical composition and thickness of the interfacial layer. The effects of inorganic compounds at the interface consisting of CuxS, ZnS and ZnO on the adhesion phase have been investigated. The CuxS has been formed by the reaction between brass and sulfur, being highly n…
DFRCCの引張特性のばらつきの評価を目的として，マトリックス内の繊維分散を考慮した引張応力－ひび割れ幅関係（架橋則）の構築を試みた。ケイ酸ナトリウム水溶液（水ガラス）を用いた繊維の可視化実験で得られた繊維撮影画像を基に繊維の分散性をポアソン分布で評価し，架橋則へ導入した。モンテカルロ・シミュレーションによりポアソン分布に基づいた分散性を与え，架橋則における最大引張応力（架橋強度）のばらつきを確認した。さらに，それらの架橋則をトリリニアモデルに変換して断面解析を行い，PVA繊維を用いたDFRCCの4点曲げ載荷試験結果と比較した結果，繊維の分散性に起因する強度のばらつきを推定できる可能性を示した。
Methylammonium lead triiodide (CH 3 NH 3 PbI 3 ) perovskite films were generated by chemical conversion of PbO 2 layers electro-deposited over NiO hole selective contact, by simple immersion in CH 3 NH 3 I isopropanol solution under ambient conditions. 2.4 μm charge carrier diffusion lengths were measured by surface p…
Discover how to take your existing web development skills and learn how to create desktop applications for macOS, Windows, and Linux, using GitHub's Electron. Learn how to combine the power of Node.js and Chromium to provide a powerful development platform for creating web applications that break free from the browser…