Materials Literature
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A novel D-A type molecule based on central fluorene unit and aldehyde group termini has been designed and constructed. Optical spectra show that, from the solution to the solid state, the absorption and fluorescence spectra of the compounds are red-shifted. Moreover, a red-shift of the absorbance maxima and the emissi…
Recent research has enabled Cu2ZnSnSe4(CZTSe) to reach efficiencies close to 10% in photovoltaic devices with CdS as the junction partner and over 12% when the CZTSe is alloyed with sulfur. Little work, however, has been reported on the potential for wide band gap, Cd-free buffer layers in these devices. Reported here…
The tensile and fracture strength of a medium carbon steel containing 0.2wt%C were determined after austenitisation at 1100oC for 1 h and subsequent isothermal transformation at 700oC for 0.5, 2, 6 and 8 h. Only the specimens transformed for 0.5 and 2 h contained martensite and these were l5.67 and 7.20%, respectively…
We find that electrostatic cross-talk may define the ultimate density limit of SWNT-PCM memory, by making co-programming of neighboring cells difficult. Scaling of the nanogap or structures free of broken tubes promise denser arrays, but the practical and economic viability of these approaches remain a concern.
In this paper, we develop a theoretical model for quantitative analysis of temperature-dependent heat capacity calculation of the magnetoresistance compounds RMnO 3 ( R = La , Nd ). The results on heat capacity obtained by us are in good agreement with the measured values. An effective interionic interaction potential…
5083 aluminum alloy was processed with combined process of warm rolling and annealing. Elongation and tensile strength of samples were measured to analyze the influences of annealing temperature and annealing time on its mechanical properties.Results show that low temperature superplasticity is very sensitive to tempe…
In this research, the microspheres of poly (99-dihexylfluorene) were fabricated with dichloromethane as a good solvent by self-assembly methods. The effects of poor solvent vapor, polymer concentration, and the temperature of environment on the formation of the sphere patterns were investigated. It was found that the…
The activation process is an important step for fabricating CdTe based solar cells. In this work, it was made by using Argon-CHClF2, Argon-Oxygen-CHClF2and Nitrogen-Oxygen-CHClF2gas mixtures. Solar cells with 12.0% of efficiency for 1 cm2 were obtained when it is activated by using Nitrogen-Oxygen-CHClF2 gas mixture.…
The complicated cavitating flow inside diesel nozzles has long been concentrated on. Based on the visualization experimental system, cavitating flow characteristic inside transparent nozzles with different length-diameter ratios was investigated in this paper. Experimental results showed that the cavitation is easier…
Utilizing the Landau-Khalatnikov equation of motion, the polarization reversal characteristics of a ferroelectric thin film with surface transition layers have been first investigated. We have discussed the effects of the thickness, the surface transition layer parameters and the temperature on the switching propertie…
Interconnect-related problems in the advanced technology node are identified and possible solutions are proposed. A PVD process of a double-layer Ta/TaN barrier is to be replaced with a CVD process of a single-layer barrier. Cu filling process can be changed from PVD seed deposition and electroplating to dynamic PVD r…
Though the study of carbon content on the microstructure and properties of gray cast iron, mechanical properties test as well as metallographic observation, we could see that the mobility of molten iron is the best when carbon equivalent control at around 4.3%; Liquid iron tend to precipitate A or B type graphite and…
Tin (II) Monosulfide (SnS) is of increasing interest to researchers due to its near-optimal optoelectronic properties for photovoltaic devices. In this work, we take a new approach using a Tin (IV) Disulfide target to sputter SnS thin films. Sulfur-rich SnS thin films are produced via in situ heating of the substrate.…
This paper used molecular dynamics (MD) simulations to investigate thermal stability of an axial compressed open-tip carbon nanocone, which have an apex angle of 19.2°. To study the thermal stability, the carbon nanocone was first compressed axially up to the compression strain near its critical strain for buckling. T…
Abstract In this work, top‐gate thin film transistor (TFT) with ZnO doped nitrogen (ZnO:N) channel fabricated by room temperature rf magnetron sputtering is demonstrated. ZnO:N film is obtained by introducing N 2 ambient when sputtering ZnO. The crystallization of ZnO:N is better compared to ZnO film. The test results…
5wt% Co deposited on a support catalyst Ce0.75Zr0.25O2 mixed oxide were prepared by combination of microemulsion and deposition-precipitation method followed by calcinations at temperature 500°C. The microemulsion component comprise of cetyl trimetyl ammonium-bromide (CTAB), 1-butanol, n-octane and aqueous solution. S…
Grind-hardening experiments of 40Cr steel were carried out on the external grinder, and the hardness and hardened-depth of the samples were measured and analyzed. Experimental results showed that the external grind-hardening was feasible and could take the place of high-frequency induction hardening. Moreover, dynamic…
This work reports a versatile technique for enhancing charge storage nonvolatile memory device using a direct assembly of gold-Nanoparticles (AuNPs) as a charge trapping layer and zinc oxide (ZnO) as semiconductor layer. We have used two types of linker to deposit AuNPs, which are 3-aminopropyltrimethoxysilane (APTMS)…
Tensile mechanical behaviors of two kinds composite laminates G803/5224 and G827/5224 specimen after high-speed impact were investigated separately. The influences of open-hole on the specimen’s net tensile strength were analyzed by comparing with standard specimen’s experimental results. An FEM model was established…
Abstract Our experimental results indicate that UV curing conditions dramatically affect the electro‐optic performance of a polymer‐stabilized blue phase liquid crystal (PS‐BPLC). In an IPS cell, the UV light direction, wavelength, and dosage influence the polymer network distribution, operation voltage and hysteresis…