Materials Literature
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Ag-Cu nanoparticles/silicate glass composites are synthesized by twice ion-exchange and reduction treatment. The as-produced glass slides were characterized by UV–Vis spectroscopy, electron probe microanalysis (EPM) and high resolution transmission electron microscopy (HRTEM). The studies show that Ag-Cu nanoparticles…
Dye sensitized solar cells (DSSCs) are of great interest due to their attractive features of high‐ energy conversion ef ciency and low production cost ‐ fi [1]. Recently, DSSCs employing quasi solid polymer‐ electrolytes have been investigated because of their intrinsic advantages such as no solvent leakage and evapor…
In this paper, the recently research results of assembly process's simulation of high-field permanent-magnetic flux source is presented. A 2D vector Jiles-Atherton magnetic hysteresis model is employed in magnetic field finite element analysis. Abnormal magnetization phenomena of permanent magnetic material during the…
PURPOSE: Magnetic spectroscopy of Brownian motion (MSB) has been used previously to measure temperature, viscosity, and cellular binding in vitro. The MSB signal - a ratio of the 5th to 3rd harmonic of the response from magnetic nanoparticles to an oscillating field - provides insight into particle microenvironment. T…
ZAO nanorod arrays with high preferential c-axis orientation and excellent photovoltaic performance were prepared in order to apply it extensively. Aluminum- doped zinc oxide thin films were deposited on glass substrates by sol-gel method.And then by controlling processing parameters such as the amount of doped alumin…
We report the first demonstration of in-plane InGaAs/InP laser diodes integrated with SiON waveguides on silicon substrates using a modular recess-integration technique. This technique allows for pre-testing and selection of devices before integration, is compatible with integration on full CMOS wafers after conventio…
It is possible to deduce the phase currents by sensing only the DC link current. However its effectiveness is limited by zero vectors and the minimum time needed for a stable sample and hold. This paper attempts to alleviate these drawbacks by modifying the PWM technique to increase the range and robustness of the pha…
Setting up a suitable toroidal current profile in a fusion tokamak reactor is vital to the eventual realization of a commercial nuclear fusion power plant. Creating the desired current profile during the ramp-up and early flat-top phases of the plasma discharge and then actively maintaining this target profile for the…
파열판은 고압장치에서 안전장치로써 사용하고 있으며, 추진기관에서는 파열을 임의로 제어하기 위한 장치로써 사용한다. 본 논문은 파열판의 파열압력 시험결과와 유한요소해석 결과를 비교하기 위한 것이다. 본 논문에서는 AISI 316L을 이용하여 제작한 파열판의 파열시험을 수행하였으며, 탄소성 물성치와 진 응력-변형률 관계의 다양한 가정을 이용하여 파열판의 파열압력을 계산하였다. 파열시험과 탄소성해석 결과를 통하여 파열판의 크기에 대한 파열압력의 변화를 확인하였다. 시험과 유한요소해석을 통해 파열압력은 파열판의 크기에 의존하며, 탄소성해석을 수행한 결과 다중 선형 응력-변…
Abstract We proposed a viewing angle controllable liquid crystal display (LCD). When the device is only driven by in‐plane electric field, it exhibits wide viewing angle (WVA). And it exhibits narrow viewing angle (NVA) when it is driven by vertical‐ as well as in‐plane‐electric field. In this way, the viewing angle o…
Different contents of epoxy functionalized polyhedral oligomeric silsesquioxane (POSS-Ep) were used to modify cyanate ester resin. The dynamic mechanical properties of the hybrids were studied dynamic mechanical analysis (DMA). DMA results showed that POSS-Ep tended to decrease E’ of the hybrids at the glassy state bu…
Honeycomb ceramic is the key component of the regenerative system. The numerical simulation was performed using FLUENT, a commercial computational fluid dynamics (CFD) code, to compare simulation results to the test data. The regenerative process of a honeycomb ceramic regenerator was simulated under different conditi…
Purpose: Calculation of radiation shielding requirements for high‐workload PET installations using the methods proposed by AAPM TG‐108 can be difficult. The principle challenge that makes PET shielding design more complex than other diagnostic imaging modalities, aside from the higher photon energy, is that it is a mu…
PURPOSE: To examine the relationship between the primary SCERMA, Sp, and the primary collision KERMA, Kcp, as a function of depth for clinically relevant energy spectra, and to accurately model the SCERMA to KERMA ratio (SKR) for clinical photon beams. METHOD AND MATERIALS: Sp, Kcp, Sp / Kcp (=SKR) for the energy spec…
The fracture strength variation across the surface of multi-crystalline silicon (mc-Si) wafers cut by multi-wire slurry sawing (MWSS) was studied in this paper. As-sawn 156×156mm2mc-Si wafers were diced in two orthogonal orientations relative to the wire speed direction to yield small rectangular samples whose fractur…
An approach of preparing single polymer composites (SPCs) by injection molding was demonstrated. Polypropylene (PP) was used as a model system to investigate this method. The thermal properties of PP granules and PP fibers were analyzed by Differential Scanning Calorimeter (DSC) to determine the processing temperature…
Abstract In this paper we used a rigorous optical model to investigate the viewing angle properties of patterned retarder (PR) stereoscopic 3D liquid crystal display (LCD). By analyzing the simulation and experiment of passive glasses and PR structure, we suggested several new design structures to enlarge the viewing…
In this paper, carbon nanotubes (CNT)/Fe powders were synthesized by a simple catalytic pyrolysis routine and the Fe-CNT/Al2O3 bulk composites were fabricated by hot-pressing sintering. The CNT/Fe powders were characterized by X-ray diffraction (XRD) and TGA-DSC. The dielectric properties of the Fe-CNT/Al2O3 bulk comp…
We have fabricated multi-layer graphene directly on SiO2by annealing sputtered amorphous carbon with a Co catalyst without use of complicated transfer processes. Structural analysis revealed that the graphene sheets formed an epitaxial structure, aligned to the Co (111) surface. An MLG wire can sustain a high current…
Abstract Currently, light‐emitting diodes with quantum dots (QDs) wavelength converter show excellent luminescence property (∼65 lm/W, CRI > 90), demonstrating them as one of ideal phosphor. Here, we will discuss historical archives on development of QD phosphors and current issues such as environmental hazard, interf…