Materials Literature
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Germanium is living a renaissance in the field of silicon photonics, where it is used as absorption element in waveguide photodetectors. Since a moderate reverse bias is enough to deplete the Ge absorber, pushing the carriers in the velocity saturation regime, we discuss here the main challenges involved in the three-…
(ZnPc) N-. , , , ZnPc, (MgO).
本論文は，コンクリート構成則について，その基本挙動を大規模有限要素法解析に適するよう再構築した研究を受けて，それを実際に大規模有限要素法ソフトウェアに実装し，解析が実用可能であることをスケーラビリティの観点から示すものである．その際，破壊解析との併用を前提とした上記構成則を，引張により発生するクラックの影響を考慮できるように拡張する．まず，本拡張について実装上のアルゴリズムを整理した．次に，ソリッド要素をベースにモデル化した仮想的な原子炉建屋に対して地震応答解析を実施し，そのスケーラビリティを示すことで，大規模RC構造での実用性を示した．
Experimentally is confirmed that helically coiled carbon nanotube (HCCNT) could be used as a small solenoid for generating spatially localized magnetic field. Current distribution during diffusive electronic transport likewise the inductivity of this quantum conductor depends on electric field. Despite slightly lower…
This thesis presents new advanced methods for the spectral analysis of time-varying waveforms in power systems. First, the main non-parametric, parametric and hybrid methods are presented in details under an analytical review of the state of the art, stressing both their advantages and their weaknesses. Then, a new ad…
International audience
Foam formation on the surface of deep pit swine manure storages poses a safety concern for both humans and animals. Although current research has provided significant insight into both the causes and mechanisms of foam formation, thus far few practical, easily implemented treatment practices are available to help miti…
The demand for fleet portable energy has risen in the past decade. The article explores the usage of Thermoelectric Modules to generate low-voltage current in order to power small scale utilities such as Smartphones, Remotes, Flash-Lights, Watches etc. Common application is the use of thermoelectric generators on gas…
This Thesis aims to study nanoparticles (NPs) synthesised via condensation from the gas phase. The advances achieved with this technique, first of all the development of a controlled reactive atmosphere and in situ capabilities, are presented. With the set-up developed, it is possible to synthesise NPs of a variety of…
Common aerospace primary structures with non-axisymmetric cross-sections made from carbon fiber composites can be reinforced using braided preforms. They adapt well to complex geometries and offer a good level of mechanical properties. Various braiding models were developed to predict the process parameters to manufac…
Siam Photon Source, the Thailand synchrotron light source, has received several upgrades in recent years. Most important of which are the improvement of the positional stability of the stored electron beam, and the installation of 2 IDs, i.e. a 2.2 T hybrid multipole wiggler and a 6.5 T superconducting wavelength shif…
Aeronautic composite parts made with 3D interlock woven reinforcements benefit from near net shape design capabilities and good damage tolerance. Mastering this complex automated process is critical in order to challenge the conventional construction of composite parts using laminated 2D fabrics. This study aims at un…
There are numerous potential causes of traumatic brain injury (TBI) and concussions, including traffic accidents, contact during sports and falls. Protection from these injuries is paramount because of the problems that result from TBI, such as loss of thinking and memory capability. Head impact from falls, especially…
A new finding of ferdowsiite, ideally Ag8Sb5As3S16, from the Monte \nArsiccio mine, Apuan Alps, Tuscany (Italy) is reported. Ferdowsiite \noccurs as black euhedral crystals, up to 0.3 mm in size, associated with \narsiccioite, boscardinite, and chabournéite in small vugs of baryte + \ndolomite veins embedded in the p…
The work aimed was the characterization of gene expression of the expansins family in C. procera plants subjected to water stress. Plants at five months were subjected to drought stress for 30 days. Were collected leaves and roots, which were washed, frozen in liquid N 2 and stored in a freezer at -80C, until the conc…
People often believe that power factor/dissipation factor testing at power frequency (50/60 Hz) usually exhibits a flat response as a function of test voltage if the insulation is in good condition. Dielectric Frequency Response, DFR is the extension of power factor testing except that the measurement is performed fro…
Microfluidic controlled multistep thermal-polymerization by Capillary-Furnace under LED irradiation (TPCFL) synthesis procedures used as a novel way for synthesis of series of anthracene-based microporous polymers (AMPs) in terms of improved product control, reproducibility and automation. The majority of microfluidic…
Si-based anode materials in Li-ion batteries (LIBs) suffer from severe volume expansion/contraction during repetitive discharge/charge, which results in the pulverization of active materials, continuous growth of solid electrolyte interface (SE!) layers, loss of electrical conduction, and, eventually, battery failure.…
As vessels are being asked to perform over longer service lives and under more intensive operational tempos, it is becoming more pertinent that the effects of structural aging be accounted for. Fatigue is an important aspect of structural aging of a vessel. Currently, fatigue analyses are conducted in order to determi…
III-Mn-V dilute ferromagnetic semiconductors (DFSs) have been treated as a candidate material for semiconductor spintronics due to their intrinsic ferromagnetism mediated by holes. In this thesis, three different Mn doped III-V DFSs, (In,Mn)As, (Ga,Mn)As, and (Ga,Mn)P, have been produced by ion implantation and pulsed…