Materials Literature
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Abstract MnAs thin films were grown by molecular beam epitaxy on InP substrates. The samples were in‐situ annealed at different temperatures of 340 °C, 380 °C and 420 °C in an As4 atmosphere. High‐resolution X‐ray diffraction (XRD) measurements showed that zinc‐blende type (zb‐) and NiAs type (n‐) MnAs co‐exist. The X…
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Semiconductor nanocrystals, or quantum dots, offer unique properties due to their mesoscopic sizes. The best understood system, cadmium selenide, has been rigorously analyzed; however, the toxicity of this material prohibits biological implementation or commercialization. Thus, the characterization of other systems mu…
Abstract DFT calculations
Abstract The crystal structures of the new borates (IV), (VII), and (IX) are determined by single crystal XRD.
Abstract Reaction of Na2S with α‐HfNBr at 750 °C in a sealed glass tube leads to the formation of α‐Hf2N2S in which the α‐type [Hf2N2] layers are topochemically cross‐linked with sulfur.
Galactose derivatives were explored as chiral dopants, effective for inducing chiral nematic liquid crystal (LC) phases. Galactose bearing O-isopropylidene substituents at the C3 and C4 and butoxybiphenyl substituents at the C2 and C6 positions exhibits a high helical twisting power (HTP) value of −74.4 μm−1. Such a h…
Abstract Tetrahedrite Cu12Sb4S13 nanocrystals are prepared from mixtures of CuCl, SbCl3, oleylamine, oleic acid, and 1‐octadecene (vacuum, 190 °C) followed by injection of bis(trimethylsilyl)sulfide.
Abstract The layered compound δ‐(MoO2)2P2O7 is synthesized by heating MoO2HPO4·H2O (560 °C, 6 min).
The possibility of improving the quality of plasma coating of TiC-Ni-Cr system, deposited on titanium alloy (α+β), through high-temperature diffusion annealing is considered in the paper. Some results of researches in the field of tribology are given. The main objective of the research is improving physical, mechanica…
Abstract X‐ray absorption near edge structure (XANES) spectra in soft X‐ray region were utilized for the characterization of Zn1‐xMgx O films. Zn L ‐edge XANES spectra of Zn1‐xMgx O films changed as increasing Mg composition x, suggesting that local structure of the Zn atom in ZnO was influenced by the alloying with M…
We report on the first demonstration of p-type doping in large area few-layer films of (0001)-oriented chemical vapor deposited (CVD) MoS2. Niobium was found to act as an efficient acceptor up to relatively high density in MoS2 films. For a hole density of 4 x 1020 cm-3 Hall mobility of 8.5 cm2V-1s-1 was determined, w…
We report the preparation of bulk Cr tips for scanning tunneling microscopy by direct current drop-off etching, and we detail the role of $ex$-$situ$ fabrication parameters on the tip apex geometry. We present a new strategy to evaluate the tunneling characteristics of the Cr tips using cleaved crystal planes, circumv…
Modern co-extrusion manufacturing of flexible multilayer polymeric packaging materials is considered as multiproduct and, in some cases, limited. Most readjustments require the change of feedstock composition. This affects the temperature profile of extruder, backpressure and requires prompt adjustment of technologica…
Abstract One of the mechanisms to cause the Josephson effect between two superconductors through a normal conductor is virtual traversal of electrons and holes through Andreev bound states. The spin Hall effect, on the other hand, disturbs the formation of Cooper pairs at the interfaces through the discrimination of u…
In the thesis an analysis and design of characteristic elements of the load-bearing structure for the selected multi-story building was undertaken. The building is located in Ljubljana and is a constituent of a building complex. Buildings are detached by expansion joints so one can be addressed separately. Load-bearin…
В роботі наведено результати дослідження зносостійких азотованих покриттів на сталях комбінованою лазерною і хіміко-термічною обробкою. Досліджено вплив вторинної структурної гетерогенності поверхні, що виникає у процесі лазерної дискретної обробки, на зносостійкість. Установлено, що попередня лазерна обробка суттєво…
In the present investigation, High Strength Low Alloy Steel (HSLA) was subjected to Intermediate Quench (IQ) heat treatment process at four different intercritical temperatures to obtain Dual Phase(DP) steels of varying percentages of ferrite-martensite microstructure The intercritical holding temperatures were 730oC,…
以过硫酸铵为引发剂，以乙二胺四乙酸四钠（Na4EDTA）为助剂合成了新型有机-无机杂化高分子絮凝剂聚合氯化铝-聚二甲基二烯丙基氯化铵（PAC-PDMDAAC）.实验考查了DMDAAC单体质量分数、引发剂用量、反应温度以及反应时间对杂化絮凝剂合成的影响.结果表明杂化高分子絮凝剂的最佳合成条件为单体质量分数30%，引发剂质量分数0.7%，反应温度60 ℃，反应时间5 h.傅里叶红外光谱（FTIR）、热重分析（TGA）以及扫描电镜（SEM）测试结果表明，杂化聚合物PDMDAAC链端有SO42-离子存在，其与带正电荷的羟基铝粒子以离子键形式键合.扫描电镜结果显示杂化絮凝剂具有更大的比表面积，易于发挥吸附架桥作用.采用Al-Ferron逐时…
A series of anisothermal multipass hot torsion tests were carried out to simulate hot rolling on two low-carbon steels with different compositions and designed for pipeline construction. The evolution of austenite microstructure and precipitation state during rolling were characterized and the effects of cooling rate…