Materials Literature
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We show that band topology can dramatically change the photophysics of two-dimensional semiconductors. For systems in which states near the band extrema are of multicomponent character, the spinors describing these components (pseudospins) can pick up nonzero winding numbers around the extremal k point. In these syste…
Poplar wood (Populus euramericana cv. “I-214”) was impregnated by pulse dipping at 0.7 MPa to 0.8 MPa for 30 min with a catalyst Ln∼SO42−/TiO2–SiO2, itaconic acid, and silica sol. Then, the modifier was cured within the wood micropores during in situ polymerization via kiln drying. The treated wood exhibited increased…
calcineurin (CaN) is a serine/threonine phosphatase that regulates a variety of physiological and pathophysiological processes in mammalian tissue. The CaN regulatory domain (RD) is responsible for regulating the enzyme’s phosphatase activity, and is believed to be highly-disordered when inhibiting CaN, but undergoes…
Abstract Epitaxial strain and chemical substitution have been the workhorses of functional materials design. These static techniques have shown immense success in controlling properties in complex oxides through the tuning of subtle structural distortions. Recently, an approach based on the excitation of an infrared a…
Polylactide (PLA) is an important biodegradable, biocompatible and renewable material that has been studied for many years for biomedical applications such as tissue scaffolding and surgical sutures. The research project described in this Thesis focused on the synthesis of polylactide-block-polylysine (PLA-b-PLy) amph…
Abstract The partitioning of calcium between liquid silver and liquid iron at 1823 K and 1873 K (1550 °C and 1600 °C) was studied experimentally using a closed molybdenum container. The calcium potential in the container was controlled by the composition of the alloys in equilibrium. The results agreed well with previ…
No abstract provided.
We successfully produced carbon nanotubes (CNTs) using a quartz chamber and thermal Chemical Vapor Deposition (CVD) method. The main goal of this study was to grow CNTs in a uniformly aligned array on a silicon wafer coated with a thin layer of a metal catalyst by controlling the flow rates of acetylene (source for ca…
Topological crystalline insulator SnTe is a promising material for future spintronics applications because of the strong spin-orbit coupling and surface states protected by the mirror symmetry of the crystal. In this paper, using a high-quality epitaxial (001)-oriented Fe/SnTe/CdTe/ZnTe heterostructure grown on GaAs,…
Van der Waals structures based on two-dimensional materials have been considered as promising structures for novel nanoscale electronic devices. Two-dimensional SnO films which display intrinsic p-type semiconducting properties were fabricated recently. In this paper, we consider vertically stacked heterostructures co…
We report the measurements of de Haas-van Alphen (dHvA) oscillations in the noncentrosymmetric superconductor BiPd. Several pieces of a complex multisheet Fermi surface are identified, including a small pocket (α∼40 T) which is three dimensional and anisotropic. From the temperature dependence of the amplitude of the…
مصرف کامپوزیتهای شامل دو یا چند فلز، با هدف بهبود بهرهوری در صنایع مختلف، در سالهای اخیر افزایش یافته است. در این تحقیق، ریختهگری کامپوزیت دوفلزی آلومینیم- مس در حالت ذوبریزی مذاب آلومینیم درون بوش جامد مسی به ابعاد، ارتفاع 40 میلیمتر و قطر داخلی و خارجی 79 و 84 میلیمتر، در سرعت دوران 1480 دور بر دقیقه و دماهای…
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Pengelasan gesek stir welding merupakan metode penggabungan dengan memanfaatkan panas yang disebabkan gesekan antara benda kerja dan pin. Pengelasan ini menggunakan beberapa parameter seperti kecepatan alat rotasi, kecepatan pengelasan, dan kedalaman pemakanan. Tujuan dari penelitian ini adalah untuk mengetahui pengar…
Caractérisation et modélisation de l'évolution de la microstructure de matériaux isolants pour câbles sous fort champ électrique continu Le sujet de cette thèse porte sur la compréhension et la modélisation du comportement électrique de système d'isolation soumis à un fort champ électrique continu. Les propriétés élec…
Thermoelectric generators are solid state machines used to convert temperature gradients into electrical energy. They are formed by several thermoelectric units connected electrically in series and thermally in parallel. These units are made by creating a junction between a p-type and an n-type conductor. This investi…
Abstract The fluorescence‐enhancement phenomenon of fluorophores positioned near metal nanostructures (metal‐enhanced fluorescence, MEF) is the result of the interaction between the fluorophores and the localized surface plasmon resonance (LSPR) of the nanostructures. This enhancement phenomenon can contribute to the…
\n\t\t\t\t\tPrecipitation behaviour in Ti-Mo microalloyed steels during isothermal holding has been investigated to understand the effect of the microalloying elements on the precipitation process. Advanced characterisation using atom probe tomography reveal a positive correlation between the precipitate and steel Mo…
ZBLAN glass shows great potential in the application of long-haul telecommunication cables. However, during processing in the fibre-drawing temperature region, the material tends to crystallize, resulting in large transmission losses. In this study, ZBLAN glass was processed with different cooling rates to discern how…
We present an experimental demonstration of a subwavelength diffraction grating performing spatial differentiation of the transverse profile of a 3D optical beam. The experimental results are in agreement with the presented analytical model suggesting that the differentiation is performed in transmission at oblique in…