Materials Literature
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With the full time-domain electromagnetic simulation technique, the time-domain propagation properties such as the temporal pulse waveform, the pulse compression and the electric field distribution inside the material are comparably investigated by transmitting the time-reversal pulsed electromagnetic wave and the pul…
Plasma-sprayed scandia-doped oxide cathode is prepared by doping a small amount of scandia into the triple carbonates and employing the air plasma spraying technique. In the preparation process, a small amount of scandia is added in the shaping process of mixing the triple carbonates with an additional 12%22% of BaCO3…
A Ni/n-Si Schottky barrier diode was produced by electrodeposition technique from the electrolyte containing nickel ions under galvanostatic control. The deposition was carried out in a three-electrode cell at room temperature. The electrical characteristics of the Schottky diodes have been investigated using current-…
Using classical density functional theory (DFT) in a modified mean-field approximation we investigate the fluid phase behavior of quasi-two dimensional dipolar fluids confined to a plane. The particles carry three-dimensional dipole mo-ments and interact via a combination of hard-sphere, van-der-Waals, and dipolar int…
"We use an infinite-range Maier-Saupe model, with two sets of local quadrupolar variables and restricted orientations, to investigate the global phase diagram of a coupled system of two nematic subsystems. The free energy and the equations of state are exactly calculated by standard techniques of statistical mechanics…
We present a flexible method that can calculate Bloch modes, complex band structures, and impedances of two-dimensional photonic crystals from scattering data produced by widely available numerical tools. The method generalizes previous work which relied on specialized multipole and finite element method (FEM) techniq…
The polarizability of a nanostructure is an important parameter that determines the optical properties. An exact semi-analytical solution of the electrostatic polarizability of a general geometry consisting of two segments forming a cylinder that can be arbitrarily buried in a substrate is derived using bipolar coordi…
The subject of this paper is to investigate the capability of the relative stress gradient (RSG) to properly represent the beneficial effect of residual stress states on the fatigue life of Ti-6Al-4V specimens, with notches of different severity. The research was developed, considering notched and un-notched specimens…
Lu3Al5O12 (LuAG) doped with Ce3+ is a promising scintillator material with a high density and a fast response time. The light output under X-ray or γ-ray excitation is, however, well below the theoretical limit. In this paper the influence of codoping with Tb3+ is investigated with the aim to increase the light output…
The optical transmittance in the visible wavelength range, thermally stimulated luminescence and time resolved luminescence under excitation by synchrotron radiation in the exciton range of Y₃Al₅O₁₂ host were studied to characterize Y₃Al₅O₁₂ nanograined ceramics in comparison to single crystals of the same composition…
N-doped Cu2O films are deposited at different temperatures by sputtering a CuO target in the mixture of Ar and N2. By the analysis of transmission spectra, it is found that the N-doped Cu2O films are changed into a direct allowed band-gap semiconductor and the optical band gap energy is enlarged to 2.52±0.03 eV for th…
Digitalna knjižnica Univerze v Mariboru - institucionalni repozitorij Univerze v Mariboru: diplomska, magistrska in doktorska dela; publikacije, raziskovalni podatki, drugi raziskovalni rezultati; izdaje univerzitetne založbe.
The electronic properties of the ZNWs (ZnO nanowire) as one of important part of novel SC (solar cells) are very important, which can greatly affect the performance of the SC. Based on the density function theory combined with the plane-wave ultra soft pseudo-potential method, the structures, the adsorption energies a…
以羧基改性的SBA-15 (COOH/SBA-15)和钛酸四丁酯(TB)为原料, 利用COOH/SBA-15表面上高分散的大量羧基将TB锚定, 通过溶剂热处理得到高分散负载型TiO2/SBA-15催化剂. 产物经XRD, Raman, FT-IR, TEM, N2吸脱附和UV-Vis表征, 结果显示: 所制备的TiO2/SBA-15催化剂为比表面大、结晶度较高的锐钛矿TiO2, TiO2均匀分散于SBA-15表面, 此外, COOH/SBA-15有效抑制了TiO2晶粒的长大. 以光催化还原CO2为探针反应, 考察了TiO2/SBA-15催化剂在紫外光照射下的光催化性能. 结果表明: 相比于后处理浸渍法制备的光催化剂, 本文制备的T…
In this paper, the hole effective mass along arbitrarily k wavevector direction and the hole isotropic effective masses in strained Ge/(001)(101)(111)Si1-xGex are obtained with in the frame work of kp theory. It is found that the hole effective mass of the top valence band along [010] wave vector decreases obviously w…
The ground state atomic configurations and electronic structures of anatase TiO2, N-doped TiO2 and N-V co-doped TiO2 are studied by the projector augmented wave method and the generalized gradient approximation plus U (Hubbard correction) (GGA+U) based on the density functional theory. The results indicate that the vo…
In this work, EuF 3 and NaYF 4 nanocrystals were prepared by liquid-solution-solid (LSS) method respectively, high-resolution transmission electron microscopy (HRTEM) images revealed that the as-prepared NaYF 4 nanocrystals were monodisperse nanoparticles with the size about 30 nm; while the as-prepared EuF 3 were pol…
New data on morphology and taxonomy of 22 species of the order Сhaetocerotales Round et al. emend. Gogorev 2011, namely 20 species of the genus Chaetoceros and 2 species of the genus Attheya from the East Antarctic Ocean are presented. New SEM data on morphology of Chaetoceros bulbosus (Ehr.) Heiden, C. hendeyi Mangui…
? -Alumina nanotubes have been synthesized by hydrothermal method from aluminium nitrate nonahydrate, CTAB, urea, and water with a molar ratio of 29:153:1:2028. The alumina has BET surface area of 203.73 m 2 /g, pore volume of 0.14 ml/g, and average pore diameter of 2.78 nm. The crystallite size calculated by Scherer…
Amorphous alloys have been investigated by applying differential scanning calorimetry (DSC), X-ray diffraction (XRD) and high resolution electron microscopy (HREM). Replacement of Y byDy shifts the primary crystallization to lower temperatures, substitution of Fe for Ni shifts the nanocrystallization to higher tempera…