Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
s: For the problem that cracks exist when the advanced materials are attacked or shocked, and the cracks are hard to self-healing. The microcapsules are put forward to make great effects on healing the cracks to some extents. The manufacturing methods of microcapsules are reviewed, including Matrix Polymerization, In-…
국내 승용차용 삼원촉매담체의 경우 배기가스 변환 효율이나 압력 강하 등은 엔진 효율 측면에서 만족되고 있지만 열적 내구성은 요구 내구 수명을 만족시키지 못하여 차량정비현장에서 상당한 파손사고가 발견되고 있다. 본 논문에서는 이러한 현상의 원인을 밝히기 위하여 국내 승용차용 삼원촉매담체에서 발생되는 열응력을 온도측정자료와 단순한 열응력 모델을 이용하여 구하였으며 열피로 성능은 확정론적 강도가 아닌 확률과 크기 및 피로 인자를 고려한 확률론적 설계 강도로 평가함으로서 확정론적 설계 강도에 의한 열피로 성능 평가 방법을 극복하였다.
Composite bioceramic titania coatings modified with hydroxyapatite nanoparticles were obtained on intraosseous implants fabricated from titanium and titanium alloys. Consistency changes of morphological characteristics, physical and mechanical properties and biocompatibility of experimental titanium implant coatings o…
Abstract A novel carbazole‐triazole derivative was used as a bipolar host of a phosphorescent blue organic light‐emitting diode doped with bis[2‐(4,6‐difluorophenyl)pyridinato‐C2,N](picolmato)iridmm(III) (FIrpic). Maximum current efficiency, power efficiency, and external quantum efficiency of this blue phosphorescent…
Phosphorus implantation can provide a direct route to a high-performing emitter, with no surface dead layer and improved blue response, and potentially higher open-circuit voltage. Here, iron precipitation during gettering is investigated in phosphorus-implanted, low-oxygen monocrystalline silicon and its impact on de…
Silica aerogel with extremely low thermal conductivity has great potential to be used as thermal insulating material. Opacification using carbon black is normally applied to reduce radiative heat loss in silica aerogel. This work attempted to replace carbon black with activated carbon as opacifer. Both the silica aero…
Abstract The several Demo design concepts have been analyzed using the code Corediv solving self consistently the core and scrape off layer regions. The numerical analyses show that there exists the limit on the concentration of impurities above which the solution with burning plasma does not exists. This limits reduc…
Spatially and spectrally resolved defect related photoluminescence of multicrystalline Silicon wafers has been obtained through hyperspectral photoluminescence imaging. The defect related emissions has been studied as a function of temperature, between 300 K (room temperature) and 87 K. The emissions D1, 0.72 eV, VID3…
Recently developed molecular dynamics models have been applied to study the formation of defects during growth of ZnTe-on-CdS multilayers. Our studies indicated that misfit dislocations are formed during growth, and the dislocation density can be reduced if the ZnTe layer is grown in a nano island configuration as opp…
Abstract Newly developed chemically strengthened glass, T2X‐1, is demonstrated. T2X‐1 has high strength and excellent ion‐exchange properties. Fracture strength of T2X‐1 is 20% higher than conventional Alumino‐silicate glass (CX‐01). T2X‐1 has twice as fast ion‐exchange speed and durable compressive stress against fou…
Poly (lactic acid) (PLA) composites with corn starch were prepared in a corotating twin-screw extruder. The influence of incorporating different proportions of filler was studied in terms of intrinsic viscosities, oscillatory shear flow, thermogravimetric analysis (TGA), scanning electron microscopy and tensile proper…
To investigate the growth dynamics of the single void during Czochralski silicon growth as well as capture the basic features of the diffusion-controlled dynamic mechanisms, a phase field method has been developed. The free energy of the system involving the chemical free energy and the gradient energy is presented. N…
This research aims to develop an aluminum alloy suitable for applications in the nuclear industry, particularly in terms of its hardness. A synthesized AlFeNiMg alloy plate was subjected to deformation in a gradual rolling process at room temperature. A Vickers hardness tester and an optical microscope were employed t…
In order to reduce the back-contact silicon solar cell manufacturing process cost, polysilazane solution is used to form SiO2diffusion barrier layer in this study. The thickness and refractive index of SiO2film is evaluated by spectroscopic ellipsometer measurement. Sheet resistance measurement and SIMS measurement re…
Nous examinons le rôle des différences physiques, chimiques et physicochimiques entre les conséquences des accidents de centrales électronucléaires – désignées EN dans la suite – et les accidents majeurs des grands équipements technologiques à hauts risques (extraction, raffinerie et transport du pétrole, grande chimi…
We report the postgrowth annealing effects on the structural, optical, and electrical properties of a low-temperature grown β-phase MoO3film on a c-plane sapphire substrate by molecular beam epitaxy. By employing the postgrowth annealing at 600°C in an oxygen atmosphere, the film was completely transformed from β-phas…
To improve the performance of piezo nano-positioning system, feedback controller is designed based on the linearized hysteresis-compensated model of piezoelectric actuator (PEA). Nonlinear hysteresis is compensated for using Maxwell resistive capacitor (MRC) model. Then, a linear system is identified with this hystere…
Abstract Recently, bioresorbable vascular scaffolds have emerged as an alternative to metallic stents since the need for mechanical support for the healing artery is temporary, and beyond the first few months there are potential disadvantages of a permanent metallic prosthesis. However, intrinsic properties related to…
The temperature field of mobile column is simulated, with the theory of high frequency induction heating and fourier heat conduction law , to analyze the change law of the temperature field with time, with different cladding parameters. The results show that the induction heating speed is mainly affected by power freq…
It is well known that similar flats in a block do not have the same energy demand. Part of the explanation for this is the location of the flat in the building, e.g. on the top floor, at the house end or in the middle of the building. It is possible to take this into account when the heating bill is distributed on the…