Materials Literature
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Abstract A multi‐dopant material system for polymer‐stabilized (PS) blue phase liquid crystal (BPLC) is proposed. The driving capacity of PS‐BPLC can be improved by doping N‐vinylpyrrollidone (NVP) and polyaniline functionalized graphene (G‐PANI). With the dopant optimization, the Kerr constant is increased by 68%, an…
Kinetics of holocellulose hydrolysis in concentrated sulfuric acid was analyzed using $^1H$ -NMR spectroscopy with different reaction time, temperature and acid concentration in secondary hydrolysis. In this work, reaction condition of secondary hydrolysis was similar to concentrated sulfuric acid process with electro…
Butyl titanate as titanium source, anhydrous ethanol as solvent, glacial acetic acid as inhibitor, La-WO3/TiO2, La/TiO2, WO3/TiO2and pure TiO2 photocatalysts were prepared through sol-gel method; At the same time, both of which were characterized by infrared spectrometer and uv-vis spectrophotometer; With methyl orang…
This paper considers the identification of kinetic parameters associated with the dynamics of closed biochemical reaction networks. These reaction networks are modeled by chemical master equations in which the reactions and the associated concentrations/populations of species are characterized by probability distribut…
With the initial permeability testing technique, early evaluation on stress concentration and fatigue damage can be realized by measuring initial permeability of the ferromagnetic material. The variation of detection signals with initial permeability is researched via the ANSYS FEM simulation and the tensile testing o…
Pre-alloyed powder of Ti-47Al-2Cr-2Nb-0.15B was prepared by a gas atomization process and powder metallurgy (PM) γ-TiAl alloys were made through a hot isostatic pressing route. The atomized powders were canned in mild steel and CP-Ti containers, degassed and sealed. The selection of mild steel and CP-Ti on the microst…
A numerical study using finite element analysis (FEA) was performed to investigate the thermal, shear and radial stresses developed in MAO coating on substrate of TC4 under thermal cycle loading. The four-node quadrilateral thermal solid element PLANE55 and four-node quadrilateral structural solid element PLANE42 with…
In this paper, an experimental stage for IPMC sensors will be designed, and characteristics of the sensor are analyzed based on experimental data. From analyses, it is known that IPMC sensors are inherent with both hysteresis and dynamic features. The existence of hysteresis and dynamics will degrade the performance o…
A combinatorial methodology has been adopted to determine the optimum composition of a Cd(1-x)ZnxS window layer for CdTe solar cells. The methodology generated a large, self consistent dataset which permitted an unambiguous relationship between x, conversion efficiency and related cell parameters to be determined. An…
Transparent conductive tin-doped indium-oxide films are produced by alternate processes of reactive high-frequency magnetron sputtering and ion treatment. The stressed states of the indium-tinoxide (ITO) films are studied by X-ray diffraction analysis. The effect of the technological conditions on changes in mactostre…
Single electron transfer living radical emulsion polymerization (SET-LRP) of allyl methacrylate (AMA) coupled with 2,2,3,4,4,4-hexafluorobutyl methacrylate (HFBA) was investigated in the presence of Cu(0)/N,N,N’,N’’,N’’-pentamethyldiethylenetriamine (PMDETA) as catalyst and ethyl 2-bromoisobutyrate (EBiB) as initiator…
Abstract We report a scattering‐free polymer network liquid crystal (PNLC) for spatial light modulator (SLM) applications. In reflective mode, the PNLC exhibits V 2π ~23V at λ=514 nm and 250 μs response time at room temperature. This enables PNLC to be integrated in a high resolution liquid‐crystal‐on‐silicon device f…
In this paper, a backside silicon-embedded inductor (BSEI) using a porous silicon (PS) layer is proposed and studied for substrate effect suppression. The PS layer has a lower effective permittivity and a much higher effective resistivity than the silicon substrate, and therefore can form a good insulation layer to su…
Using a dual-gate transistor structure, we have evaluated the effect of off-bias-stress spatially induced surface charging at the AlGaN/GaN surface. Pulsed voltage stress on the drain access region led only to increase in the on-resistance, whereas the stress on the source region additionally decreased the saturation…
The effect of gamma irradiation upon Al/Al2O3/Si MOS structure under different doses of60Co is studied in this article as a function of total dosage. Al2O3MOS capacitors with a gate dielectric thickness of 4nm and electrode diameter of Φ 1mm are prepared on the p-Si substrate using atomic layer deposition. The MOS cap…
In order to make the design criteria of metallic sealing rings, and improve the mechanical properties of metallic sealing rings used in aviation engine, using finite element analyzing the stress distribution of three corrugated sealing rings with different corrugated radius. Finally get a preliminary design criterion…
This paper presents the results of tests for characterization of soil samples collected in Mossoró-RN, UFERSA-RN Campus (5 ° 12'34 .68 "South latitude, 37 ° 19 '5.74 "west longitude), for the purpose of producing soil-cement for the manufacture of pressed blocks. Objective of improving the quality of soil-cement, and…
The forging processes have usually been studied by analytical methods under simplifying assumptions such as the consideration of plane strain. Present work this study is approached from Upper Bound Theorem using the Triangular Rigid Zones model from a new approach, that is, through the analysis of Ring Compression Tes…
Abstract The K 2 SiF 6 :Mn 4+ phosphor was synthesized by a redox reaction from SiO 2 [1]. Under the 450 nm excitation, K 2 SiF 6 :Mn 4+ show a narrow deep‐red emitting around 633 nm which attributed to the 2 E g to 4 A 2g transition of Mn 4+ ion with the half width of 8 ‐10 nm. The particle size was approximately 8 μ…
A numerical simulation of phase transformation for hot-rolled strip on run-out-table are introduced in the present work combined with experiment. Continuous-cooling-transformation (CCT) diagram are used to regress the transformation model of Q345B. Temperature field coupled with phase transformation is analyzed on run…