Materials Literature
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Fibers and fiber lasers are widely used in photonics as well as in medical applications. Hence, research on fiber lasers utilizing glasses activated with rare-earth (RE) ions has been of great interest. One of the most studied fiber laser glass is Erbium-doped silicate glasses. However, low solubility of Er3+ ions in…
Cable sealing is the key to cables installed in sub-vehicles. The existing cable sealing materials include rubber, polytetrafluoroethylene (PTFE), graphite, etc., among them polyurethane shows high potential of changing property. In this paper, we analyse the physical and chemical properties of three materials used in…
采用密度泛函理论计算了Hg、HgCl、HgCl2在CeO2（111）表面的吸附构型、吸附能和态密度。结果表明，Hg在CeO2（111）表面属于弱化学吸附。HgCl与CeO2（111）表面为强化学吸附，是反应的重要中间体。HgCl2在CeO2（111）表面是物理吸附，易发生解离，脱除。氯对于汞的吸附和氧化产生较强的影响，这与实验结果相一致。基于计算结果，得到汞在CeO2（111）表面的反应机理。
In recent years, the optimization of the imaging stations at research reactors and especially the further development of the neutron detectors allowed the measurement of hydrogen distributions with increasing spatial and temporal resolution at lower detection limits at the same time. Hydrogen has compared to iron a hi…
At room temperature, Mn2+ can exist stably in an aqueous solution containing extra ammonia. Subsequently, the Mn2+ can be directly oxidated to form Mn3O4 by feeding oxygen. Compared with conventional methods, our preparation method does not generate the intermediate of Mn(OH)2. Most importantly, the traditional oxidat…
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…
A novel halogen-free flame retardant of polyphosphonate (PDDP), has been synthesized by the melt polymerization. The structure of PDDP has been characterized by fourier transform infrared spectroscopy and nuclear magnetic resonance spectra. Results of vertical burning (UL-94), limiting oxygen index (LOI), and the cone…
Desde su aparición, la nanotecnología ha irrumpido como área puntera de investigación ofreciendo beneficios significativos a la sociedad a través de aplicaciones y desarrollos tecnológicos que han revolucionado diversas áreas de la ciencia. En el sector salud, el empleo de la nanotecnología (nanomedicina), ha benefici…
Artificial ferroelectric (FE) heterostructures show unique electrical properties compared to bulk and single-crystal and thin film FEs. The internal built-in electrical fields due to heterogenoeuos nature of the structure gives rise to unique electrical properties. Dielectric and electrothermal (pyroelectric and elect…
Earlier cancer detection and diagnosis is essential to prevent cancer mortality in nanomedicine and nanotechnology. Fluorescence and magnetic signals provide a way for earlier detection through imaging systems. Magnetic iron oxide nanoparticles have a superparamagnetism feature that allows them to act as contrast agen…
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…
Objectives. The aim of the study is to develop a construction design that increases the intensity of heat exchange between media and optimises the energy and mass dimensions of the instrument indicators. Methods. A method for the theoretical investigation of thermoelectric heat transfer intensifiers is used, which, by…
This thesis describes experiments to characterize defects in two-dimensional materials and understand their effect on electrical conductivity. Defects limit the electrical conductivity through a material by scattering electrons. Understanding the physics of defects is therefore essential to building materials and stru…
The paper considers the influence of elevated temperatures in the range from 20 C to 200 C in the mechanical properties of the concrete: the thermal expansion, elastic modulus, shear deformation coefficient, strength.Functions describing the dependences of the mechanical characteristics of concrete on temperature as w…
This article shows ten special stiffened plates. With the help of high transient non-linear numerical software LS-DYNA, air blast wave load can impulse on stiffened plates. Overpressure of air blast wave distributes on the stiffened plates with different kinds of forms. The overpressure distributions are effected by t…
The study and optimization of emitter zinc oxide/crystalline silicon heterointerface with a focus on recombination has been identified as the most important issue to fully utilize the potential of ZnO/Si heterojunction solar cell [1]. ZnO/Si interface properties are very crucial to the performance of solar cell due to…
Comparative corrosion inhibition of mild steel in 0.5 H 2 SO 4 by the total alkaloids and tannins extracted from Parkia biglobosa seed bark and Jatropha curcas stem bark was investigated using gravimetric method at 30 0 C. Results showed that these phytocompounds inhibit the corrosion process of mild steel in the test…
Electrospinning is a fiber production method that has gained a special attention due to the simple setup and potential for the industry scale up to produce nanoregime polymer fibers. However, elect ...
Diese Arbeit untersucht den Einfluss von lokalen Anregungen durch ultrakurze Laserpulse auf stark korrelierte Manganate anhand ihrer Transporteigenschaften und betrachtet dabei die Nichtlinearitäten, mithilfe derer sich Rückschlüsse auf die Korrelationen zwischen den Elektronen und den Phononen und damit dem Gitter zi…
Magnesium oxychloride cement-cornstalk is an environmentally friendly composite, the major constituent of which is magnesium oxychloride cement(MOC) and cornstalk fibers. In order to obtain composites with excellent performance, phosphoric acid and cornstalk fibers was adopted to MOC modification. The results show tha…