Materials Literature
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Imogolite flocculates under alkaline conditions even though the net charge is considerably negative. To clarify the reason for this contradiction, we measured the charge characteristics of imogolite with an ion-exchange method using sodium ions (Na+) and chloride ions (Cl−) as index ions, and estimated its electric fi…
Abstract We demonstrate the ultrafast control of condensation and evaporation of an electron–hole liquid in diamond prepared by chemical vapor deposition. The electron–hole liquid dynamics was measured using a three‐pulse pump and probe experiment. The transient transmission changes in the presence of electron–hole dr…
Polypropylene/hemp fibers flame retardant composites were prepared by melt compounding. Ammonium polyphosphate and organomodified montmorillonite were used as flame retardants. Maleic anhydride grafted polypropylene was used as compatilizer. Polypropylene/hemp fibers composites with same percentage of ingredients (pol…
La tenacidad de fractura de aceros de alta resistencia (AHSS), es una propiedad interesante para optimizar el comportamiento a impacto, pero su caracterización experimental en chapas metálicas es compleja debido a su espesor. En este trabajo se plantea el método del Trabajo Esencial de Fractura (TEF), como alternativa…
Abstract The microencapsulated red phosphorus (MRP) filled polypropylene (PP) composites were prepared using a twin‐screw extruder. The effects of load and temperature on the extrudate swell behavior of the PP/MRP composite melts were investigated by means of a melt flow indexer. The test temperatures and loads were v…
Heavily doped Ga-doped ZnO (resistivity ?8???10?4???cm and optical transmittance 96%) were fabricated by radio frequency magnetron sputtering. Post-growth annealing studies in H2?Ar and pure Ar atmospheres were conducted. No noticeable thermal-induced change in the Ga depth profile or in the Ga chemical state was foun…
In this work, we propose an efficient approach to compensate for the commonly observed substrate-induced bianisotropy that occurs in on-wafer optical metamaterials at normal incidence. First, the consequence of placing a finite thickness substrate underneath a metamaterial is analyzed, indicating that the induced bian…
본 연구에서는 배경값 보정 및 크기보정을 포함하여 오차요인을 크게 줄이고, WILDFIRE(C)를 통해 최적화된 이론값과 실측값의 일치정도 (R%, (<TEX>${\sum}$</TEX>|이론값-측정값|/이론값)/<TEX>$n{\times}100$</TEX>)를 정량값으로 제시하고, 그 값을 최소화하는 반복과정을 통해 일라이트 폴리타입 함량을 정량하는 개선된 full-pattern-fitting법을 제안하여 일정 함량을 갖는 혼합시료를 대상으로 검증하고, 기존의 Grathoff and Moore법과 비교하였다. 개선된 full-pattern-fitting법은 대상시료…
This work updates Vols. 54, 58, and 59 in the IUPAC Solubility Data Series and presents solubility data for polycyclic aromatic hydrocarbon solutes dissolved in binary organic solvent mixtures. Published solubility data for anthracene, naphthalene, phenanthrene, phenothiazine, and pyrene that appeared in the primary l…
Objective: The use of nanoparticle products is expected to present a potential harmful effect on consumers. Also, the lack of information regarding inhaled nanoparticles may pose a serious problem. In this study, we addressed this issue by studying pulmonary toxicity after nasal instillation of Al-NPs in SD rats. Meth…
The interest in twin-boundary (TB) planes as a source of vortex pinning has been recently renewed with the discovery of the new iron-arsenide pnictide superconductors. In the family of compounds Ba(Fe${}_{1\ensuremath{-}x}$Co${}_{x}$)${}_{2}$As${}_{2}$ a structural transition from a tetragonal to orthorhombic lattice…
Spin-injection into silicon from a ferromagnetic metal requires a solution to the conductivity mismatch. Oxide tunnel barriers such as MgO, Al2O3, or SiO2 are typically used to solve this problem, but often include defects and must be several monolayers thick to avoid pinholes. At these thicknesses, the overall tunnel…
Mg-La Mg-Nd Ϧ Ð
Control of the rheological properties of the nanoparticle suspensions is challenging. In this study influence of the solids content and the fructose addition on the viscosity of nano alumina suspensions have been investigated by low temperature differential scanning calorimetry ( LT ‐ DSC ), rheometry, and zeta potent…
Lithium sulphate admixtured l-alanine (LSLA) salt was synthesized and the solubility of the commercially available l-alanine and the synthesized LSLA sample was determined in de-ionized water at various temperatures. In accordance with the solubility data, the saturated aqueous solutions of l-alanine and lithium admix…
Abstract A series of poly(hexamethylene terephthalate‐ co ‐hexamethylene 5‐sodium sulfoisophthalate) copolyesters containing from 5 to 50 mol % of sulfonated units as well as the two parent homopolymers are prepared by melt polycondensation. The polyesters are obtained with high molecular weights, which decrease with…
Catalyst-free graphene nano-sheets without substrates have been synthesized using fullerene and a high direct current (dc) pulse in the spark plasma sintering (SPS) process. Graphene nano-sheets were synthesized directly in the gas phase of carbon atoms which are generated from fullerene at a temperature of <TEX>$600^…
Low temperature (<400 >K) thermoelectric properties of semiconducting RuIn3 and metallic IrIn3 are reported. RuIn3 is a narrow band gap semiconductor with a large n-type Seebeck coefficient at room temperature (S (290 K) ≈ - 400 μ V / K), but the thermoelectric figure of merit (Z T (290 K) ≈ 0.007) is small beca…
Tailoring the crystallographic orientation in piezoelectric ceramics is very useful for improving their properties. Orientation in ceramics can be controlled by templated grain growth , hot forging, etc. We have focused on using a strong magnetic field for the crystallographic orientation even in diamagnetic ceramics.…
High temperature annealing of ultrathin anatase-TiO 2 (001) thin films deposited on SrTiO 3 (001) substrates by a dip coating method leads to the self-assembly of an array of square-shaped epitaxial anatase islands with lateral dimensions of order 150 nm. The procedure developed here provides a very cheap and simple a…