Materials Literature
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The photoconductive characterization of hot-wall-deposited MnAl2Se4 layers was investigated as a function of temperature. By measuring the photocurrent (PC) spectroscopy, we identified PC peaks corresponding to an intrinsic transition, i.e., a band-to-band transition. According to the selection rule, the crystal field…
Multinary I-III-VI2 group semiconductor nanocrystals, such as CuInS2, Cu(InGa)Se2, AgInS2 and their solid solutions with ZnS, have been attracting increasing attention due to their low toxicity, wide range of absorption from UV to visible or near-infrared regions, and tunable energy gap. In this review, we introduce r…
本研究通过添加氧化铈的方法，研究了氧化铈的添加量和烧结制度对氧化铈/氧化钇复合材料微观结构、物相组成以及力学性能的影响。结果显示，添加少量氧化铈能够有效的促进氧化铈/氧化钇复合材料的烧结、抑制晶粒的长大。当氧化铈含量为9.1 mol%时，试样的晶粒最小，密度较高。随着氧化铈含量的进一步提高，虽然试样的密度没有明显变化，但是其晶粒尺寸变大；烧结温度对复合材料的烧结具有很大影响，当加热温度由1400℃提高到1600℃时，试样的相对密度由大约60%提高到97%；氧化铈添加量小于33.3 mol%时，氧化铈/氧化钇复合材料的硬度和断裂韧性随着氧化铈添加量的增加而逐渐提高。 In this paper, the effect of ceri…
Polarization beam splitters, devices that separate the two orthogonal polarizations of light into different propagation directions, are one of the most ubiquitous optical elements. However, traditionally polarization splitters rely on bulky optical materials, while emerging optoelectronic and photonic circuits require…
Metal Oxide (CuO, ZnO and CdO) Nanoparaticles were synthesized by Co-Precipitation Method Using PVP as Optimizer and same concentration of the precursors. The Formation of (CuO, ZnO and CdO) Nanoparticles were confirmed by XRD, UV -Visible, FT-IR and FESEM Studies. The Average particle size have been found to be about…
This research study is mainly targeted on fabrication and characterization of antibacterial poly(e-caprolactone) (PCL) based fibrous membrane containing silver chloride particles. Micro/nano fibres were produced by electrospinning and characterized with TGA, DSC, SEM and mechanical analysis. It was found that addition…
Zn 2 GeO 4 1,2 , 3 , 1 , 1 , 1 , 2 (1. , 611130; 2. , 130012; 3. , 130012) : 5 m Zn 2 GeO 4 Zn 2 GeO 4 FE-SEMTEMXRD UV-Vis , 6:2, 170, 10 min, 3.604 g, Zn 2 GeO 4 Zn 2 GeO 4 13 m 2 /g, , 3.76 mmol/(hg)
Anatase Ce/TiO2 materials were synthesized by using collagen as a template, cerium nitrate as cerium source, and titanium sulfate as titanium source. The structure of Ce/TiO2 was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric and differential thermal analysis (TG–DTA) a…
By processing with different high pressure torsion procedures, we obtained ultrafine-grained structures in medium-carbon steel and pure iron with different microstructural features. The UFG carbon steel exhibited a better balance of tensile strength and ductility in comparison with the UFG pure iron. The higher streng…
Nanomedicine has vastly improved the treatment and diagnosis of many cardiovascular conditions such as atherosclerosis, myocardial ischemia, myocardial infarction, restenosis, and thrombosis. A few nanoparticle drug delivery systems that are currently being tested and used in clinical trials include lipid-based drug d…
Semiconductor nanomaterials are poised to revolutionize the field of electronics.Their lowcost synthesis and unique optoelectronic properties are aligned to the needs of modern industry.The miniaturization of semiconductor electronic components can achieve higher performance in a smaller volume, and the easily tailore…
A numerical model describing the liquid-liquid phase transformation of the nucleation, the diffusional growth, Ostwald coarsening and macro-transport phenomena was established based on Euler-Euler method. The microstructure development of Al-Bi alloys in different solidification rate has been simulated by coupling the…
Surface and inside of silicon (Si) spheres prepared by a powder melting method were investigated. The lattice constant of the inside of Si spheres was larger than that of the surface of Si spheres, which was due to interstitial atoms trapped at gettering sites. To obtain the evidence for existence of the impurities, c…
In the past decades, electronic devices are getting smaller and more powerful, following the Moore’s Law. Nevertheless, silicon-based field effect transistors are rapidly approaching their scaling limit. Thus, exploring new channel materials as well as novel device architectures are highly demanded for the further min…
Stearic acid was applied to modify the VO2 nanopowders, and the influence of modified medium, dosage of modifier, amount of activator, time of modification on the surface modification effect were studied. The modification parameters such as modifying agent and the conditions were optimized. The changes of Surface grou…
CoPt-C films were fabricated on silicon substrate by dc reactive magnetron sputtering followed by vacuum annealing. The effects of C additions and annealing temperature on the microstructure and magnetic properties were investigated. The as-deposited films had flat, compact surfaces and face-centered cubic structure,…
Exciton dissociation energy was obtained based on the comparison of thickness of the space charge region estimated from the measurement of capacitance of prepared Schottky diode and from the measurement of photovoltage spectra. While the capacitance measurements provide information about the total width of the space c…
Shuttle-like CuO has been synthesized by treating commercial Cu(OH)2 powder at room temperature for an appropriate time. As anode material of lithium-ion batteries, shuttle-like CuO exhibits high specific capacity, high stability, and good rate performance, superior to commercial CuO powder. The shuttle-like CuO exhib…
Les prothèses existent depuis plusieurs milliers d’années. Initialement, il s’agissait de matériaux de suppléance pour remplacer des membres (jambe, pied, main) ou pour la chirurgie (fil de suture). Les matériaux utilisés ont évolué mais ils n’avaient pas été initialement créés pour des applications médicales. Récemme…
Using the method of few-body physics, the solutions of ground state and some low-lying excited states [such as 1s -1s , 1s -1p and 1s -1d ] of electron pair in a semimagnetic quantum dot have been obtained. The dependence of the confined energies of the electron pair in a semimagnetic quantum dot is studied as a funct…