Materials Literature
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A study has been carried out to understand the mechanism that enables plasma enhanced atomic layer deposition (PEALD)-grown RuTaN barriers to support direct (seedless) copper electroplating. In particular, the effects of changing the liner surface chemistry on the subsequent plated copper nucleation behavior have been…
Nonpolar a -plane GaN epilayers are grown on several r -plane sapphire substrates by metal organic chemical vapour deposition using different nucleation layers: (A) a GaN nucleation layer deposited at low temperature (LT); (B) an AlN nucleation layer deposited at high temperature; or (C) an LT thin AlN nucleation laye…
Dilute acid hydrolytic condition of cotton stalks and ethanol producing from hydrolytic liquids were studied in this paper. Single factors experiments and orthogonal experiment were designed to explore effects of sulfuric acid concentration, hydrolysis time, solid-liquid ratio and hydrolysis temperature on the yield r…
Zn-Al-Cu alloys are characterized by several advantageous properties that can include good castability, good tribological properties, and low energy value needed to form the product. In comparison to bronzes, Zn-Al-Cu alloys are characterized by a lower density. The purpose of this study was to determine the effect of…
The hydration heat evolution process is studied on the pure cement paste, the cement- fly ash binary system and the cement- silica fume binary system with water binder ratio(w/b) of 0.53, 0.35 and 0.23 by using isothermal calorimeter(TAM Air). The fly ash replacement in the cement-fly ash binary system is 10%, 30% and…
The ultrasonic effect on the characteristics of GaP and AlGaInN multicomponent nanohetero-structures has been studied. It is found that the ultrasonic irradiation at frequencies of ∼10 5 Hz for several hours leads to a significant degradation of the characteristics of multicomponent nanoheterostructures and shifts the…
Electrical resistivity of synthetic nanocrystalline (30-40 nm crystallite size) and a crystalline natural sample of geikielite MgTiO 3 has been measured at simultaneous high pressure and high temperature up to 6 GPa and 800 K, respectively. The temperature dependence of the electrical resistivity of both the synthetic…
This study investigates the use of an acoustic parametric array as a means for microbubble excitation. The excitation wave is generated during propagation in a nonlinear medium of two high-frequency carrier waves, whereby the frequency of the excitation wave is the difference frequency of the carrier waves. Carrier wa…
Since electric vehicles are becoming increasingly popular, there will be a large market for electric machines to power them. The typically applied rotating field machines, however, are not cost-efficient. Thus, the aim of this paper is to present an inexpensive alternative to power future electric cars using high-spee…
A new bi-modal asynchronous arbitration node is introduced for use as a building block in an adaptive asynchronous interconnection network. The target network topology is a variant Mesh-of-Trees (MoT), combining a binary fan-out network (i.e. routing) and a binary fan-in network (i.e. arbitration) for each source-sink…
Slurry mean residence time (MRT), removal rate, and polishing defects were analyzed for a novel slurry injection system used in chemical mechanical planarization. The novel slurry injection system was placed adjacent to the wafer on the pad surface and slurry was injected towards the wafer through multiple holes in th…
A simple large-aspect-ratio (R0/r) circular equilibrium model is developed for low-beta reversed field pinch (RFP) geometry. The model is suitable for treating small scale instability and turbulent transport driven by ion temperature gradient (ITG) and related electron drift modes in gyrokinetic simulations. The equil…
A mathematical model of a steam generator feed system at a power unit of a nuclear plant with variable values of transfer function coefficients is presented. The model is realized in the MATLAB/Simulink/Stateflow event-driven simulation.
Compared with conventional overlapping windings, nonoverlapping windings offer an exclusive advantage of short end-windings, which leads to less copper loss, shorter axial length, and higher slot fill factor particularly when used with segmental stator core. However, it is not so easy to manufacture the stator with no…
Hybrid networks, which combine the flexibility of packet-switched network and the low-latency of circuit-switched network, provide decent performance. However, users are obligated to maintain the configuration of temporary circuit-switched connection. In this paper, we propose Dynamic Bypass Circuit, a novel architect…
A unidirectional CPW-fed slot antenna with metasurface is proposed. Instead of using a conducting reflector, a metasurface as a superstrate is applied to modify the radiation pattern and enhance the antenna gain. The simulation and measurement results confirm that the antenna with metasurface can enhance on broadside…
Nonlinear optical properties of various glasses containing copper chloride nanocrystals have been studied at wavelengths of 532 and 1064 nm. It is established that the nonlinear optical response is manifested by the optical limiting of transmitted radiation and consists of two, low- and high-threshold parts. The low-t…
In this work, a new model of transformer winding is developed. The components in the model are determined by the geometric and electric data of the winding. Under different degrees of axial displacement and radial deformation in the winding, circuit parameters in the model will be changed and thus the character of the…
Amyloid deposits are a hallmark of many diseases. In the case of Alzheimer's disease a turn between 21Ala and 30Ala, stabilized by a salt bridge between 22Glu/23Asp and 28Lys, may nucleate folding and aggregation of the Aβ peptide. In the present paper we test this hypothesis by studying how salt bridge and turn forma…
Investigation of extraction of fullerene mixture from the fullerene soot obtained by plasma erosion of graphite rod in helium atmosphere with different solvents such as α-chloronaphthalene, o -dichlorobenzene, o -xylene, toluene, benzene, carbon tetrachloride, and n -hexane at 25°C was carried out. Completeness and ef…