Materials Literature
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Some certain theoretical and experimental studies on the historical origin of music, musical perception, and musical memory are analyzed. Various directions for this problem research are classified.
The use of budget funds, direct investment funds, and venture capital funds as the major sources of the modernization financial assets is analyzed. General financial instruments for stimulating the Russian economy modernization are specified.
In the elaboration of the double-disc grinding theory, the parametrization procedure of the technological parameters, such as current stock removal distribution, stock removal velocity, cutting forces and elastic strain along the circular and linear trajectory of the work flow feed including the grinding conditions as…
We report on the gold assisted epitaxial growth of Ge nanostructures under ultra high vacuum (UHV) conditions (\approx3\times 10-10 mbar) on clean Ge (100) surfaces. For this study, \approx2.0 nm thick Au samples were grown on the substrate surface by molecular beam epitaxy (MBE). Thermal annealing was carried out ins…
The simulation and optimization of the ultralight helicopter aerodynamic characteristics at the design stages and phases which permit to determine optimal values of the engine power and speed are performed.
The experimental data in the field of the radial angular-contact ball bearings are resulted. The cold assembly technology for the radial angular-contact ball bearings, in which the inner race cooling temperature is determined with its aftercontraction to provide the ball bearing assembly support, is worked out.
Kinds of liquid dashpots, braking modes are considered. The improvement of the drive dynamic indices by applying the slotted hydraulic damper is shown on the mathematical model.
Modeling is considered a powerful means of cognition. It is used, as a rule, as one of the effective training methods and devices. The performed analysis has resulted in determining the usage patterns and the advantages of the modeling method application as a training method in the information technologies. It is foun…
BerkeleyGW is a massively parallel computational package for electron excited-state properties that is based on the many-body perturbation theory employing the ab initio GW and GW plus Bethe-Salpeter equation methodology. It can be used in conjunction with many density-functional theory codes for ground-state properti…
Ab initio GW calculations are a standard method for computing the spectroscopic properties of many materials. The most computationally expensive part in conventional implementations of the method is the generation and summation over the large number of empty orbitals required to converge the electron self energy. We p…
We analyze the effects of sp 2 / sp 3 bond aspect ratio on the transport properties of amorphous carbon quasi-1D structures where structural disorder varies in a very non-linear manner with the effective band gap. Using a tight-binding approach the calculated electron transmission showed a high probability over a wide…
We studied the size distribution and its scaling behavior of self-assembled InAlAs/AlGaAs quantum dots (QDs) grown on GaAs with the Stranski-Krastanov (SK) mode by molecular beam epitaxy (MBE), at both 480°C and 510°C, as a function of InAlAs coverage. A scaling function of the volume was found for the first time in t…
We have evaluated the optical and electrical properties of a far-infrared (IR) transparent electrode for extrinsic germanium (Ge) photoconductors at 4 K, which was fabricated by molecular beam epitaxy (MBE). As a far-IR transparent electrode, an aluminum (Al)-doped Ge layer is formed at well-optimized doping concentra…
Omni-directional light coupling to surface plasmon polariton (SPP) modes to make use of plasmon mediated near-field enhancement is challenging. We report possibility of near dispersion-less modes in structures with unpatterned metal-dielectric interfaces having 2-D dielectric patterns on top. We show that the position…
The increasing demand for green, environmentally friendly materials has resulted in new natural fiber–based materials as replacements for nondegradable materials derived from petroleum resources that are currently being used for a number of applications. Hence, this study deals with long fiber–reinforced green polymer…
Using equilibrium molecular dynamic simulations, we calculate the phonon thermal conductivity of a graphene-like silicon nanosheet called silicene at room temperature. We find that the in-plane thermal conductivity of silicene sheets is about one order of magnitude lower than that of bulk silicon. We further investiga…
The relaxor-like behavior in CaCu3Ti4O12 was investigated in details. The dielectric anomaly was found to be an extrinsic phenomenon related to oxygen vacancy. Annealing treatments in N2 and O2 atmospheres revealed that the relaxor-like behavior is composed of two types of relaxations with close relaxation parameters.…
Abstract Colloidal quantum‐dot light‐emitting diodes (QDLEDs) with the HfO2/SiO2‐distributed Bragg reflector (DBR) structure are fabricated using a pulsed spray coating method. Pixelated RGB arrays, 2‐in. wafer‐scale white light emission, and an integrated small footprint white light device are demonstrated. The exper…
By means of a Wannier projection within the framework of density functional theory, we are able to identify the modified c -axis hopping and the energy mismatch between the cation bands as the main source of the t 2 g splitting around the Γ-point for oxide heterostructures, excluding previously proposed mechanisms suc…
This letter is motivated by some recent experiments on pan-cake–shaped nano-samples of metallic glass that indicate a decline in the measured shear modulus upon decreasing the sample radius. Similar measurements on crystalline samples of the same dimensions showed a much more modest change. In this letter we offer a t…